2002 Cover10580 2/22/02 8:08 AM Page 1 BOOK 4 CHORE PERFORMERS MTD SERVICE LLC Form No. 770-10580 © Copyright 2002 $13.95 770-10580 P.O.
01 String Trimmers.fm Page 1 Tuesday, February 19, 2002 1:05 PM 22” STRING TRIMMER Model 24A-253-401 Introduction The 22" wheeled string trimmer was intended for clearing heavy growth from unimproved land. This model has a blade brake clutch feature. When the control lever is released, the trimmer line will stop rotating, but the engine will continue running. See Figure 1-1. 1.
01 String Trimmers.fm Page 2 Tuesday, February 19, 2002 1:05 PM . All three nuts and bolts that secure the glide ball to the spindle assembly can be removed using a pair of 7/16" wrenches. NOTE Do not re-use the original hardware, new hardware will be included with the glide ball. Spindle NOTE The spindle cannot be serviced, and must be replaced as a unit if it gets damaged. See Figure 1-6. 3. Uncross the two lines so that they are roughly parallel.
01 String Trimmers.fm Page 3 Tuesday, February 19, 2002 1:05 PM 1. Remove the nuts from the four carriage bolts that hold the deflector to the trimmer base using a 7/16" wrench. See Figure 1-7. 1 4. Figure 1-9. Remove the belt keeper from the idler pulley by loosening the lock nut with a 1/2" wrench. See Figure 1-10. 2. Rotate the deflector so that the wide part of the center hole in the deflector will fit past the spindle. See Figure 1-8. Figure 1-10. 3. Remove the deflector. See Figure 1-9.
01 String Trimmers.fm Page 4 Tuesday, February 19, 2002 1:05 PM 5. Remove the V-belt from the idler pulley. See Figure 1-11. 9. Remove the hex nut and hex bolt that hold the tensioner pulley arm to the trimmer base using a 1/2" wrench. NOTE Record the mounting hardware as you remove it. See Figure 1-13. Figure 1-11 6. Grasp the idler bracket assembly and pull inward until the belt can be removed from the spindle assembly. Figure 1-13. NOTE 10.
01 String Trimmers.fm Page 5 Tuesday, February 19, 2002 1:05 PM BELT REPLACEMENT 5. Remove the carriage bolts and the deflector. Remove the belt keeper from the tensioner pulley by loosening the lock nut with a 1/2" wrench. NOTE There are two different crankshaft pulleys that have been used in string trimmer production. Some string trimmers have engines equipped with heavy engine flywheels, while other engines have light engine flywheels.
01 String Trimmers.fm Page 6 Tuesday, February 19, 2002 1:05 PM 1. Secure the pulley flywheel so that it will not spin during removal of the crankshaft bolt. See Figure 1-17. TRIMMERS WITH STANDARD CRANkSHAFT PULLEYS NOTE For trimmers equipped with standard crankshaft pulleys, follow steps 1 through 10, then complete these steps; 1. Loosen, but do not remove the remaining nuts that fasten the spindle and belt tensioner bracket to the trimmer base using a 1/2" wrench. See Figure 1-19. Figure 1-17. 2.
01 String Trimmers.fm Page 7 Tuesday, February 19, 2002 1:05 PM 4. Roll the belt off of the crankshaft pulley, and slip the belt between the pulley and the rear axle. See Figure 1-21. There is a stop welded to the axle where it passes through the right hand side of the trimmer base. This stop will not allow the axle to slide or rotate. See Figure 1-23. Figure 1-21. Figure 1-23. 5. Remove the belt from the spindle pulley.
01 String Trimmers.fm Page 8 Tuesday, February 19, 2002 1:05 PM Figure 1-25. Figure 1-26. There is a debris screen over the cooling fan. Its presence is necessary to prevent the cooling fins from getting clogged. Customers should not operate the trimmer without the screen in place. See Figure 1-26. A single wing nut holds the screen in place, and is easily removed for cleaning.
Chore Performers.fm Page 1 Wednesday, February 20, 2002 10:25 AM CHORE PERFORMERS 2-1. EDGER. the operation in both positions after making any adjustment to the rod. Secure lower clutch rod with flat washer and hairpin clip when adjustment is correct. WARNING When operating the edger, stop engine immediately and readjust the clutch rod if blade turns with blade clutch/depth lever in the disengaged position. 2-1.1 Checking the Clutch Rod Adjustment.
Chore Performers.fm Page 2 Wednesday, February 20, 2002 10:25 AM 2. Remove belt guard at spindle assembly by removing two hex bolts, lock washers and hex nuts. See Figure 2-4. release adjustment lever on pivot bracket and rotate spindle housing. Place adjustment lever in notch desired. See Figure 2-5. CAUTION If wheels are not adjusted, the blade will hit the left front wheel causing the belt to slip. 2. When the blade is adjusted toward the horizontal position, the front wheels must also be adjusted.
Chore Performers.
Chore Performers.
Tillers.fm Page 1 Tuesday, February 19, 2002 1:28 PM TILLERS 3-1. GENERAL. 5. To begin operation of the tiller, proceed as follows: For further information regarding this section, refer to Technical Service Video “Chain Case Teardown 410- 420 Tiller.” 3-1.1 3-1.2 a. With the depth bar set and staked into the soil and with the clutch in the neutral position, start the engine. Tillers are a precision built machine designed for seed bed preparation, cultivating, furrowing and mulching.
Tillers.fm Page 1 Tuesday, February 19, 2002 1:28 PM TILLERS 3-1. GENERAL. 5. To begin operation of the tiller, proceed as follows: For further information regarding this section, refer to Technical Service Video “Chain Case Teardown 410- 420 Tiller.” 3-1.1 3-1.2 a. With the depth bar set and staked into the soil and with the clutch in the neutral position, start the engine. Tillers are a precision built machine designed for seed bed preparation, cultivating, furrowing and mulching.
Tillers.fm Page 2 Tuesday, February 19, 2002 1:28 PM grease level. If the case is disassembled the grease can be replaced. See Figure 3-1. For a summary of specifications for Model 031, see Table 3-1. 2. With clutch grip released (neutral position), pull starter cord several times. The tines should not turn. If they do, adjust the hex nuts at the clutch cable bracket. Check again for correct adjustment. 3-2.3 Belt System. Note the following: 1.
Tillers.fm Page 3 Tuesday, February 19, 2002 1:28 PM When tilling, leave approximately 8 inches of untilled soil between the first and second tilling paths, then make the third path between the first and second as shown. In some soils, the desired depth is obtained the first time over the garden. In other soils, the desired depth is obtained by going over the garden two or three times. In the latter case, the depth stake should be lowered before each succeeding pass over the garden.
Tillers.fm Page 4 Tuesday, February 19, 2002 1:28 PM For cultivating, a two to three inch depth is desirable. The throttle should be set to control forward movement to a slow walking speed. With the outer tines installed, the working width of the machine is 18 inches. For cultivation, this may be reduced to 14 inches by removing the outer tines. Use a 3/8" wrench to remove the two self-tapping screws on the outside of the tines. Replace the first tine removed as shown. See Figure 3-6.
Tillers.
Tillers.
Tillers.fm Page 7 Tuesday, February 19, 2002 1:28 PM 6. Separate halves of the chain case housing. Be careful not to damage the chain case gasket. Replace if necessary. NOTE The drive system has 2 chain reduction steps. Each step reduces the speed and increases the torque or power down to the axle shaft. The reduction is done with the use of a #35 chain to a #420 chain. 7. Push input shaft inward slightly. Lift up on hub sprocket assembly and remove the #35 chain from the sprocket. See Figure 3-13. 3-2.
Tillers.fm Page 8 Tuesday, February 19, 2002 1:28 PM CAUTION Both bearings must be pressed from the outside towards the center of housing. Pressure should be exerted on the outer race or damage will result causing premature failure. 11. Inspection of Parts. a. Inspect chains for breakage or bent clips (master links). b. Inspect sprockets and shafts for excessive wear or breakage. c. Inspect bearings on input and output shafts for excessive wear. 9.
Tillers.fm Page 9 Tuesday, February 19, 2002 1:28 PM NOTE 5. Reattach bearing and bearing housing to tiller housing with self-tapping screws removed in step 3. The dust caps have a molded lip on the ID which seats into a groove in the bearing hub allowing for a tight fit. 6. Reassemble pulleys, belt and belt guard removed in step 2. 3. Carefully pry off dust caps from housing assembly. 4. Pry old seal out of housing assembly and slide off shaft. 3-3. Model 310/700 Tiller. 3-3.
Tillers.fm Page 9 Tuesday, February 19, 2002 1:28 PM NOTE 5. Reattach bearing and bearing housing to tiller housing with self-tapping screws removed in step 3. The dust caps have a molded lip on the ID which seats into a groove in the bearing hub allowing for a tight fit. 6. Reassemble pulleys, belt and belt guard removed in step 2. 3. Carefully pry off dust caps from housing assembly. 4. Pry old seal out of housing assembly and slide off shaft. 3-3. Model 310/700 Tiller. 3-3.
Tillers.fm Page 10 Tuesday, February 19, 2002 1:28 PM 3-3.3 Clutch Adjustment. 2. After removing three screws, lift off belt cover. 3. Slip belt off chain case pulley first then off idler pulley. Remove belt from engine pulley. See Figure 3-20. WARNING Disconnect spark plug wire and ground it against engine before performing any adjustments, repairs or maintenance. NOTE 4. To reassemble new belt, first place belt over engine pulley. Be sure belt is inside two pins at engine pulley.
Tillers.fm Page 11 Tuesday, February 19, 2002 1:28 PM 2. Remove self-tapping screws, hex bolts, lock washers and hex nuts from the outer edge of chain case. 3. Remove hex bolt, lock washer and hex nut from the center of chain case. 4. Remove self-tapping screws from bearing housing. See Figure 3-21. 3 NOTE This will allow slack in the other chain which can be removed by lifting off the sprockets. The hub sprocket assemblies will also be removed from the housing during this procedure. 5.
Tillers.fm Page 12 Tuesday, February 19, 2002 1:28 PM CAUTION When reassembling, make certain the step spacers and washers are positioned properly or damage to the shaft assembly and/or bearings will result. (Cupped side faces sprocket.) NOTE The chain case is lubricated with 12 ounces of plastilube #0 grease to keep the bearings and chains operating in a constant lubrication bath. 10. Remove bearings from housing using an arbor press. See Figure 3-26. NOTE 1.
Tillers.fm Page 13 Tuesday, February 19, 2002 1:28 PM 8. Reattach tines/wheels with the hardware removed in step 3. 3-3.7 Input Shaft Bearing Replacement. WARNING Disconnect spark plug wire and ground it against engine. 3 1. To replace bearing on tine chain case assembly, remove belt guard, belts and pulleys from input shaft. 2. Remove self-tapping screws which secure bearing housing to tiller housing. 3. Slide bearing housing and bearing off input shaft. 3-4.
Tillers.fm Page 13 Tuesday, February 19, 2002 1:28 PM 8. Reattach tines/wheels with the hardware removed in step 3. 3-3.7 Input Shaft Bearing Replacement. WARNING Disconnect spark plug wire and ground it against engine. 3 1. To replace bearing on tine chain case assembly, remove belt guard, belts and pulleys from input shaft. 2. Remove self-tapping screws which secure bearing housing to tiller housing. 3. Slide bearing housing and bearing off input shaft. 3-4.
Tillers.fm Page 14 Tuesday, February 19, 2002 1:28 PM 6. Reassemble the new belt following instructions in reverse order. 3-4.2 Reverse Drive Belt Removal and Replacement. 5. Reassemble new belt following instructions in reverse order. 3-4.3 Disassembly of Tine Chain Case. Disassemble as follows: 1. To remove reverse drive belt, first remove forward drive belt as instructed in the previous paragraph. 2. Remove reverse drive belt from beneath belt retainer. 3. Roll belt off transmission pulley.
Tillers.fm Page 15 Tuesday, February 19, 2002 1:28 PM 3 NOTE The chain case is lubricated with 16 ounces of plastilube #0 grease to keep the bearings and chains operating in a constant lubrication bath. NOTE The drive system has 3 chain reduction steps. Each step reduces the speed and increases the torque or power down to the axle shaft. The reduction is done with the use of the #41 chain to a #420 chain to a #50 chain. 9. To disassemble hub sprocket assemblies, slide spacer out of bearing.
Tillers.fm Page 16 Tuesday, February 19, 2002 1:28 PM CAUTION When reassembling, make certain the step spacer and washer are positioned properly or damage to the shaft assembly and/or bearings will result. (Cupped side faces sprocket.) 11. Remove keyed input shaft from sprocket sleeve assembly as shown. See Figure 3-38. 3-4.4 Chain Case Seal Replacement. and Bearing WARNING Disconnect spark plug wire and ground it against engine. 1.
Tillers.fm Page 17 Tuesday, February 19, 2002 1:28 PM Make certain new seal is completely seated against shaft bearing. 5. Reattach bearing and bearing housing to tiller housing with self-tapping screws removed in step 3. 7. Reassemble dust caps making certain they are fully seated on bearing hub. 8. Reattach tines with the hardware removed in step 3. 3-4.5 Input Shaft Bearing Replacement. 6. Reassemble pulleys, belt and belt guard removed in step 2. 3-5. Tiller Models 340 And 390. 3-5.
Tillers.fm Page 17 Tuesday, February 19, 2002 1:28 PM Make certain new seal is completely seated against shaft bearing. 5. Reattach bearing and bearing housing to tiller housing with self-tapping screws removed in step 3. 7. Reassemble dust caps making certain they are fully seated on bearing hub. 8. Reattach tines with the hardware removed in step 3. 3-4.5 Input Shaft Bearing Replacement. 6. Reassemble pulleys, belt and belt guard removed in step 2. 3-5. Tiller Models 340 And 390. 3-5.
Tillers.
Tillers.
Tillers.fm Page 20 Tuesday, February 19, 2002 1:28 PM DRIVE SYSTEM THE 390 SERIES TILLER IS THE SAME AS THE 340 EXCEPT THAT IT HAS REVERSE DIRECTION ALSO. THE REVERSE IS 104 RPM. THE TRANSMISSION ON THE 340/390 IS NOT A REPAIRABLE COMPONENT BUT IS EASILY REMOVED AND REPLACED SHOULD SERVICING BE REQUIRED.
Tillers.fm Page 21 Tuesday, February 19, 2002 1:28 PM 3 3-5.3 Tine Width Adjustment. 1. The tilling width before adjustment is 22 inches. See Figure 3-43. NOTE The forward clutch cable is the cable which is attached closer to the rear of the tiller. If the spring has come loose, reattach. 2. The tilling width can be increased to 24 inches by removing the clevis pins and hairpin clips. Sliding the outer tines out 1-inch and securing in this position with clevis pins and hairpin clips. See Figure 3-44. 3.
Tillers.fm Page 22 Tuesday, February 19, 2002 1:28 PM 3-5.5 Reverse Clutch Control Cable Attachment (Model 390 only). If the spring has come loose, attach the end of the reverse cable to the reverse drive lever above the handle assembly in the same manner as you attached the forward cable. NOTE The reverse clutch cable is the cable which is attached closer to the front of the tiller. 3-5.6 Clutch Adjustment. WARNING Disconnect spark plug wire from spark plug to prevent accidental starting.
Tillers.fm Page 23 Tuesday, February 19, 2002 1:28 PM 2. Lift belt off transmission pulley and engine pulley. out from between belt keepers. Remove belt. See Figure 3-49. 3. Remove hex nut which secures reverse idler pulley to idler bracket. Slide idler pulley out and remove belt. See Figure 3-48. 3 5. Install new belt following instructions in reverse order. Make certain forward drive belt is assembled with the wide side of belt away from transmission and engine pulleys.
Tillers.
Tillers.fm Page 25 Tuesday, February 19, 2002 1:28 PM 1. Remove belt cover by removing four self-tapping screws. See Figure 3-51. 3 3-6.1 Belt Tension Adjustment for Drive and Tine Clutches. Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt. Adjustment is needed if the tines seem to hesitate while tilling, but the engine maintains the same speed. Adjust as follows: 2. Lift belt from under flat idler pulley. 3. Remove wire belt guard. See Figure 3-52. 1.
Tillers.fm Page 25 Tuesday, February 19, 2002 1:28 PM 1. Remove belt cover by removing four self-tapping screws. See Figure 3-51. 3 3-6.1 Belt Tension Adjustment for Drive and Tine Clutches. Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt. Adjustment is needed if the tines seem to hesitate while tilling, but the engine maintains the same speed. Adjust as follows: 2. Lift belt from under flat idler pulley. 3. Remove wire belt guard. See Figure 3-52. 1.
Tillers.fm Page 26 Tuesday, February 19, 2002 1:28 PM 5. Slip engine pulley out until belt can be removed. 6. Install new belt. 3-6.3 Removal and Replacement of Short Drive Belt. 1. Remove tine belt as instructed in previous paragraph. 2. Remove hex bolt, lock washer and flat washer from rear engine pulley. Slip rear engine pulley off engine. 3. Loosen two set screws on front engine pulley. See Figure 3-54. NOTE Do not lose square key on engine shaft. 4. Remove lock nut on V-idler pulley. 5.
Tillers.fm Page 27 Tuesday, February 19, 2002 1:28 PM NOTE NOTE Upon reassembly, refer to your owners guide for correct assembly of wire belt guard for your model tiller. The drive system has three chain reduction steps. Each step reduces the speed and increases the torque or power down to the axle shaft. The reduction is done with the use of a #35 chain to a #420 chain and again to another #420 chain.
Tillers.fm Page 28 Tuesday, February 19, 2002 1:28 PM CAUTION When reassembling, make certain the step spacer and washers are positioned properly or damage to the shaft assembly and/or bearings will result. (Cupped side faces sprocket.) 11. Remove bearings from housing using an arbor press as shown. See Figure 3-62. 10. To remove the wheel shaft assembly simply pull the complete assembly out of the housing. See Figure 3-61.
Tillers.fm Page 29 Tuesday, February 19, 2002 1:28 PM 3-6.5 Disassembly of Tine Chain Case. Disassemble as follows: NOTE The chain case is lubricated with 12 ounces of plastilube #0 grease to keep the bearings and chains operating in a constant lubrication bath. 1. Remove chain case from tiller. 2. Remove self-tapping screws, hex bolts, lock washers and hex nuts from the outer edge of chain case. 3. Remove hex bolt, lock washer and hex nut from the center of chain case. 4.
Tillers.fm Page 30 Tuesday, February 19, 2002 1:28 PM 9. To remove tine shaft assembly simply pull complete assembly out of housing. See Figure 3-67. CAUTION Both bearings must be pressed from the outside towards the center of housing as shown. Pressure should be exerted on the outer race or damage will result causing premature failure. 3-6.6 Dust Cap Removal and Replacement. WARNING Disconnect spark plug wire and ground it against engine. 1.
Tillers.fm Page 31 Tuesday, February 19, 2002 1:28 PM WARNING 1. Loosen hex nut at cable bracket on handle. See Figure 3-70 Disconnect spark plug wire and ground it against engine. 1. Remove self-tapping screws which secure bearing housing to tiller housing. 2. Slide bearing housing and bearing off input shaft. 3 CAUTION Pressure should be applied to the outer race of bearing and the housing should be secured properly.
Tillers.fm Page 31 Tuesday, February 19, 2002 1:28 PM WARNING 1. Loosen hex nut at cable bracket on handle. See Figure 3-70 Disconnect spark plug wire and ground it against engine. 1. Remove self-tapping screws which secure bearing housing to tiller housing. 2. Slide bearing housing and bearing off input shaft. 3 CAUTION Pressure should be applied to the outer race of bearing and the housing should be secured properly.
Tillers.fm Page 32 Tuesday, February 19, 2002 1:28 PM 3. To remove reverse drive belt, lift up on small idler pulley. Slip belt off outside sheave of wheel chain case pulley. Remove belt from two-step engine pulley. See Figure 3-73. 6. Lift forward drive belt off forward engine pulley and remove. See Figure 3-75. NOTE 4. Loosen (do not remove) hex nut at the top of wire belt keeper. See Figure 3-74. When reassembling belts, be certain belts are routed around all belt keeper pins. 5.
Tillers.fm Page 33 Tuesday, February 19, 2002 1:28 PM 3 NOTE If V-idler or flat idler pulleys are removed for any reason, be sure to install with hub side against idler bracket. See Figure 3-77. 3-7.4 Disassembly of Wheel Chain Case. Refer to paragraph 3-6.4. 3-7.5 Disassembly of Tine Chain Case. Refer to paragraph 3-6.5. 3-7.6 Dust Cap Removal and Replacement. Refer to paragraph 3-6.6.
Tillers.fm Page 34 Tuesday, February 19, 2002 1:28 PM 3-7.7 Input Shaft Bearing Removal and Replacement. Refer to paragraph 3-6.7. 3-8. 3-34 TILLER MODELS 410 AND 420 (Figure 378).
Tillers.fm Page 35 Tuesday, February 19, 2002 1:28 PM 3-8.1 NOTE Belt Removal and Replacement. Upon reassembly, make certain the belt is routed over the idler pulley and inside of belt keepers at engine pulley. See Figure 3-79. CAUTION Do not use an off-the-shelf belt. Your tiller has been engineered with a belt made of special material (Kevlar Tensile) for longer life and better performance. It should not be replaced with an off-the-shelf belt. 3-8.2 Attaching the Clutch Cable. 1.
Tillers.fm Page 36 Tuesday, February 19, 2002 1:28 PM gear selection lever in NEUTRAL, start the engine. 2. Standing on the right side of the tiller, visually examine the belt (inside the belt cover). It should not be turning. If the belt turns with the unit in neutral, adjust by moving the hex nut below the cable bracket down a few turns. See Figure 3-80. Tighten the upper hex nut against the bracket. 3. Now move the shift lever to FORWARD (Wheels Forward) position.
Tillers.fm Page 37 Tuesday, February 19, 2002 1:28 PM 3 2. Remove the self-tapping screw and casing clamp which holds the throttle cable to the engine. Disconnect the throttle control cable “Z” fitting from the throttle lever. See Figure 383. 4. Remove belt from gear case pulley. (Not necessary to remove belt from engine.) Disconnect the clutch cable from idler bracket and remove the gear case pulley. See Figure 3-85. 3. Remove the belt cover and shift cover as an assembly.
Tillers.fm Page 38 Tuesday, February 19, 2002 1:28 PM 5. Remove bolts and nuts securing the LH and RH tine shield brackets, located on inside front of the tine shield. Remove the nuts and bolts on top rear of chain case. Separate rear assembly from case. Remove the tines. See Figure 3-86. 7. Roll the case assembly back away from the frame. Remove the reinforcement plate and idler bracket, the shift bracket, tines and wheels from the gear case. See Figure 3-88.
Tillers.fm Page 39 Tuesday, February 19, 2002 1:28 PM 2. Inspect and clean the tine shaft and wheel shaft. Polish to remove any nicks or burrs. See Figure 3-90. 5. Remove the reinforcement bracket and flat washer. See Figure 3-93. 3 6. Remove the cover support. See Figure 3-94. 3. Remove the 17—1/4-20 taptite screws. See Figure 3-91. 7. Remove the cover support brackets. See Figure 3-95. 4. Remove the 7/16-14 hex nut and bell washer. See Figure 3-92. 8. Remove the cable support bracket.
Tillers.fm Page 40 Tuesday, February 19, 2002 1:28 PM 11. Remove the two washers and the 45 tooth gear. See Figure 3-99. 9. Split the housing and remove the upper half by sliding evenly over the wheel and tines shafts. See Figure 3-97. 12. Remove the sprocket assembly simultaneously with the tine shaft assembly and roller chain. See FIgure 3-100. 10. Remove the gasket. See Figure 3-98. NOTE The welded side of the tine shaft sprocket is on the bottom. 13.
Tillers.fm Page 41 Tuesday, February 19, 2002 1:28 PM Units produced prior to mid-1994: If rear wheel drive is periodically lacking, the large spacer, Part No. 750-0987, should be installed. See Figure 3-104. 3 14. Remove the wheel shaft assembly, Part No. 611-0023, along with washer and spacer. See Figure 3-102. 17. Lift the drive shaft assembly until the shift fork is removed from the clutch collar. See Figure 3-105. 15. Remove the washer, spacer, gear idler assembly, and spacer from the jackshaft.
Tillers.fm Page 42 Tuesday, February 19, 2002 1:28 PM 19. Complete drive shaft chain and sprocket disassembled. See Figure 3-107. jackshaft with the reverse gear and spacer in place. a. Slide the sprocket approximately halfway down the spur gear with the chain already around the drive shaft sprocket. b. Feed the chain around the sprocket. c. Install the drive shaft while turning it slightly to align it with the reverse gears. d.
Tillers.fm Page 43 Tuesday, February 19, 2002 1:28 PM 3-9. TILLER MODELS 430 AND 447. 3-9.1 Dual direction rear tines make the Model 430 exceptionally versatile. For light tilling, set the sixteen 13-inch diameter tines to turn forward. When stability is required for heavier tilling, set tines to turn in reverse direction.
Tillers.fm Page 44 Tuesday, February 19, 2002 1:28 PM 3.8.2 Clutch Adjustment. WARNING Disconnect spark plug wire and ground it against engine before performing any adjustments, repairs or maintenance. NOTE WARNING Disconnect spark plug wire and ground it against engine. Do not overtighten control wire. Too much tension may cause it to break. 1. Remove belt cover from the left side of tiller as follows. 1.
Tillers.fm Page 45 Tuesday, February 19, 2002 1:28 PM 3. Remove belt. Reassemble new belt following instructions in reverse order. NOTE Upon reassembly, make certain the belt is routed over idler pulley and inside of belt keepers at engine pulley. See Figure 3-112. 3 2. Remove knobs from control rod and handle adjustment rod. See Figure 3-114. 3-9.4 Disassembly of Tiller. WARNING Disconnect spark plug wire and ground it against engine before performing any repairs. 1.
Tillers.fm Page 46 Tuesday, February 19, 2002 1:28 PM 4. Remove cotter pin from hooked end of control rod at indicator bracket. See Figure 3-116. 6. Remove shift cover by removing two self-tapping screws and flat washers. See Figure 3118. 5. Remove roll pin from indicator bracket. See Figure 3-117. 7. Cut the cable tie holding the throttle control cable at shifting shaft in top of chain case. See Figure 3-119.
Tillers.fm Page 47 Tuesday, February 19, 2002 1:28 PM c. Remove hex nut and flat washer from weld bolt at the bottom of the front of the belt cover. 9. Remove hex lock nut from weld bolt on idler bracket and unhook spring. See Figure 3-121. 3 8. Remove belt cover from left side of tiller as follows. See Figure 3-120. 10. Loosen bottom hex nut on drive cable and remove drive cable from cable bracket. See Figure 3-122. a. Remove two self-tapping screws and flat washers from the top of belt cover. b.
Tillers.fm Page 48 Tuesday, February 19, 2002 1:28 PM 13. Remove depth bar, by removing clevis pin and hairpin cotter. See Figure 3-126. 12. Remove handle by removing handle adjustment crank and two belleville washers, hex nut and hex bolt. See Figures 3-124 and 3-125. 14. Remove handle pivot and positioner bracket as one assembly by removing four hex bolts, lock washers and hex nuts. See Figure 3-127. 15. Remove tine shield by removing two hex bolts, lock washers and hex nuts at the back of tine shield.
Tillers.fm Page 49 Tuesday, February 19, 2002 1:28 PM 3 16. Remove eight bolts, lock washers and hex nuts at front bottom edge of tine shield and reinforcement bracket. Lift off tine shield. See Figure 3-129. 18. Remove drive belt by holding the belt tight (close to the engine). Remove hex bolt, lock washer, flat washer and spacer at engine pulley. Slide one half of split belt off. See Figure 3131. 17. Remove tine assemblies from tine shaft on chain case by removing clevis pin and hairpin cotters.
Tillers.fm Page 50 Tuesday, February 19, 2002 1:28 PM 20. Remove wheels from wheel shaft by removing hex bolt and belleville washer. See Figure 3133. 22. Remove two tine shield mounting brackets from chain case. 23. Remove belt cover mounting bracket from chain case. 24. Remove two engine mounting rails from chain case. 3-9.5 If you get a tiller that is hard to roll on a floor, you can loosen the three jackshaft bolts and roll the tiller back and forth to help align the gears. Tighten nuts when finished.
Tillers.fm Page 51 Tuesday, February 19, 2002 1:28 PM 3 2. Remove three hex nuts and flat washers. 3. Remove two gear case brackets. See Figure 3-136. NOTE It is not necessary to remove dust covers or bearing housing to gain access into chain case. 4. Now the two chain case housings can be separated by using two screwdrivers to pry upward. You may also need to tap on the tine shaft and wheel shaft with a mallet. 5. Remove, clean and inspect gasket. Replace if necessary. See Figure 3-137.
Tillers.fm Page 52 Tuesday, February 19, 2002 1:28 PM 7. Remove three spacers. See Figure 3-97. 8. Lift out spur gear from jackshaft. Clean and inspect spur gear for any damage; replace if necessary. See Figure 3-140. NOTE Carefully retain flat spacer washer on top of the 30 and 44 tooth spur gear assembly. This is necessary for proper gear spacing. 12. Lift out wheel shaft assembly, 55 tooth spur gear assembly and #420 chain. Clean and inspect all parts for damage. Replace if necessary. See Figure 3-142.
Tillers.fm Page 53 Tuesday, February 19, 2002 1:28 PM NOTE Hub side of spur gear goes up upon reassembly. 3 14. Remove shifting bracket and spacer. See Figure 3-144. 16. Remove flat washer, spacer, three flat washers and three jackshafts from housing. See Figure 3-146. NOTE In 1989 and earlier production the shift bracket could slide out. In 1990 and later production there is a snap ring on the shifting bracket on the outer side of the housing to help absorb shock during shipping.
Tillers.fm Page 54 Tuesday, February 19, 2002 1:28 PM 450 SERIES DUAL DIRECTION REAR TINE TILLER Removing the Tiller from the Carton NOTE 1. Remove the staples from the top of the carton using a pair of pliers. See Figure 3-147. There are many ways to remove the unit from the carton. Perform this step in a manner that best suits you, and make certain the control cable does not get bent or kinked during removal. See Figure 3-149. 2.
Tillers.fm Page 55 Tuesday, February 19, 2002 1:28 PM 3 NOTE Depth Stake Installation Make certain the depth stake is inserted with the “L” portion facing rearward. 5. Secure the depth stake to the depth stake bracket using the clevis pin and hairpin removed earlier. 1. Tilt the tiller forward and rest it on the front counterweight. 2. Locate the depth stake and remove the “T” knob, flat washer, and hex bolt from the depth stake. See Figure 3-152.
Tillers.fm Page 56 Tuesday, February 19, 2002 1:28 PM 3. Unscrew and remove the eyebolt from the threaded cable end. NOTE DO NOT remove the lower rear hex cap screw and flange lock nut securing the handle brackets and spacer. 2. Locate and align the lower handle assembly mounting holes with the holes in the handle brackets. 4. Slide the threaded cable end up through the center of the upper handle assembly mounting hole and snap the retainer in place. See Figure 3-156. 3.
Tillers.fm Page 57 Tuesday, February 19, 2002 1:28 PM NOTE If the bail closes with no resistance and the clutch cable does not straighten out, tighten the threaded cable end two turns at a time until the bail closes to the handle bar comfortably with a slight amount of resistance. 8. Secure the eyebolt to the threaded cable end with the jam nut loosened earlier using a 7/32” wrench and a 3/8” wrench. NOTE DO NOT over tighten the clutch control cable or damage may occur. 6.
Tillers.fm Page 58 Tuesday, February 19, 2002 1:28 PM secure it with the hairpin removed earlier. See Figure 3-160. NOTE DO NOT place fingers under the belt cover. 5. The belt should not have any motion. If the belt has motion, proceed to step 6. If the belt does not have motion, perform the Primary Forward Clutch Cable Adjustment Section. 6.
Tillers.fm Page 59 Tuesday, February 19, 2002 1:28 PM 1. Disconnect and ground the spark plug wire against the engine. 2. Remove the hairpin and clevis pin securing the left wheel assembly to the wheel shaft. 3. Slide the left wheel assembly away from the belt cover. NOTE Do not remove the left wheel assembly. 4. Remove both torx screws securing the top of the belt cover to the tiller casing using a male T27 torx. See Figure 3-164. 2.
Tillers.fm Page 60 Tuesday, February 19, 2002 1:28 PM ward Clutch Cable Adjustment section prior to operating the tiller. Idler Pulley Rod Adjustment IMPORTANT: After the Primary and Secondary Forward Clutch Cable Adjustment sections have been performed, the belt may be excessively stretched. When the belt stretches, the idler pulley rod may need to be adjusted. See Figure 3-167. 9. Remove the input pulley from the input shaft. 10.
Tillers.fm Page 61 Tuesday, February 19, 2002 1:28 PM 13. Shift the gear selector to all the forward modes. 14. Assemble the tiller in the reverse order above. Tire Pressure 1. Remove the valve stem cap. See Figure 3170. 7. Remove the acorn lock nut and flat washer securing the side belt cover to the tiller casing using a 7/16” socket. 8. Remove the hex screw securing the belt cover to the engine mounting bracket using a 3/8” socket. 9. Remove the belt cover from the tiller. 2.
Tillers.fm Page 62 Tuesday, February 19, 2002 1:28 PM b. The shift cover label clearly states the gear the tiller is in, and what direction the tines will rotate. See Table 3-6 below. 1. The tilling depth is controlled by the depth stake that can be adjusted to five different settings. NOTE NOTE Never engage the clutch bail while shifting. The side shields must be adjusted along with the depth stake. See Figure 3-173. Depth Stake and Side Shield Positions WARNING 2.
Tillers.fm Page 63 Tuesday, February 19, 2002 1:28 PM 6. When breaking up sod and performing shallow cultivation, use the setting which gives 1” of tilling depth (second hole from the top). NOTE Make certain the side shields are lowered to the lowest setting. 7. To increase depth, raise the depth stake and side shields. 3 8. When tilling loose soil, the depth stake can be raised to its highest position (bottom adjustment hole). NOTE Make certain both side shields are raised to the highest setting. 9.
Tillers.fm Page 64 Tuesday, February 19, 2002 1:28 PM 9. Loosen the center lock jam nut and hex cap screw securing the idler belt keeper to the idler pulley. 10. Remove the V-belt from the unit. 11. Install a new belt in the reverse order above. NOTE Make certain the V-belt is installed properly between the pulleys and the belt keepers. 12. Perform all Clutch Cable Adjustments prior to operating the tiller. Problem Solving Pathfinder Problem: Wheels Do Not Rotate Under Power a.
Tillers.fm Page 65 Tuesday, February 19, 2002 1:28 PM 8. Is the input pulley secured to the input shaft? See Figure 3-181. 3 a. Fix: Perform the Clutch Cable Adjustment sections. 5. Is the V-belt worn or stretched? See Figure 3180. a. Fix: Secure the input pulley using a hex bolt, lock washer, and flat washer. 9. Does the input pulley rotate the input shaft? See Figure 3-182. a. Fix: Perform the Belt Replacement section. 6. Is the V-belt routed correctly? a.
Tillers.fm Page 66 Tuesday, February 19, 2002 1:28 PM Interior Gear Case Assembly Inspection NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing the interior inspection. 1. Inspect the “L” portion of the shift lever where it engages into the shift fork. See Figure 3-185. a. Fix: Replace the snap ring and run through all the gear selector positions. Test the unit in normal 11.
Tillers.fm Page 67 Tuesday, February 19, 2002 1:28 PM NOTE 9. Does the 30T spur gear rotate the 11T inner gear assembly? The detent shaft must be held in place to move the shift fork. 10. Does the 11T inner gear assembly have extensive wear or damage? 2. Slowly rotate the hexed input shaft counterclockwise and inspect the following functions: 11. Does the 11T inner gear assembly rotate the 44T spur gear on the wheel reduction jack shaft. NOTE 12.
Tillers.fm Page 68 Tuesday, February 19, 2002 1:28 PM 18. Does the 33T wheel shaft assembly have extensive wear or damage? 19. Does the weld securing the 33T gear to the wheel shaft assembly appear to have any defects? See Figure 3-190. NOTE The detent shaft must be held in place to move the shift fork. 2. Slowly rotate the hexed input shaft counterclockwise and inspect the following functions: NOTE Replace any of the following components that are found to be worn or damaged. 3.
Tillers.fm Page 69 Tuesday, February 19, 2002 1:28 PM 16. Does the 33T wheel shaft assembly have extensive wear or damage? 17. Does the weld securing the 33T gear to the wheel shaft assembly appear to be broken or defective? See Figure 3-194. 3 10. Does the 44T spur gear have extensive wear or damage? 11. Does the 44T spur gear rotate the 10T wheel input sprocket assembly? 12.
Tillers.fm Page 70 Tuesday, February 19, 2002 1:28 PM a. Fix: Proceed to the Interior Gear Case Assembly 3. Is the spiral pin securing the indicator bracket to the shift lever? See Figure 3-197. a. Fix: Perform the Clutch Cable Adjustment sections. 5 Is the V-belt worn or stretched? See Figure 3-199. a. Fix: Perform the Belt Replacement section. • Fix: Install a new spiral pin. 6. Is the V-belt routed correctly? 4. Is the clutch control cable adjusted properly? See Figure 3-198.
Tillers.fm Page 71 Tuesday, February 19, 2002 1:28 PM 3 a. Fix: Secure the input pulley using a hex bolt, lock washer, and flat washer. a. Fix: Proceed to the Interior Gear Case Assembly Inspection. 9. Does the input pulley rotate the input shaft? See Figure 3-201. 11. With the spring pin and indicator bracket removed, does the shift lever have a snap ring securing it in place? See Figure 3-203. a. Fix: Remove the input pulley and inspect the engagement splines. If worn, replace the input pulley.
Tillers.fm Page 72 Tuesday, February 19, 2002 1:28 PM NOTE NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing the interior inspection. 1. Inspect the “L” portion of the shift lever where it engages into the shift fork. See Figure 3-204. Replace any of the following components that are found to be worn or damaged. 3. Does the 16T spur gear rotate with the hexed input shaft? 4.
Tillers.fm Page 73 Tuesday, February 19, 2002 1:28 PM 11. Does the #50 chain rotate the 18T tine shaft assembly? See Figure 3-206. 3 NOTE 12. Does the 18T tine shaft assembly have extensive wear or damage? The detent shaft must be held in place to move the shift fork. 13. Does the weld securing the 18T gear to the tine shaft assembly appear to be broken or defective? See Figure 3-207. 2.
Tillers.fm Page 74 Tuesday, February 19, 2002 1:28 PM 11. Does the 9T tine input sprocket rotate the #50 chain? See Figure 3-209. Problem: Tiller Will Not Go Into Neutral 12. Does the #50 chain have extensive wear or damage? Exterior Gear Case Assembly Inspection 13. Does the #50 chain rotate the 18T tine shaft assembly? See Figure 3-210. 14. Does the 18T tine shaft assembly have extensive wear or damage? 15.
Tillers.fm Page 75 Tuesday, February 19, 2002 1:28 PM 3 a. Fix: Proceed to the Interior Gear Case Assembly Inspection. a. Fix: Install a new spiral pin. 3. Is the V-belt too tight, binding up the input pulley? a. Fix: Perform the Clutch Cable Adjustment sections. 6. With the spring pin and indicator bracket removed, does the shift lever have a snap ring securing it in place? See Figure 3-216. 4. Is the V-belt routed correctly? See Figure 3214. CAUTION a.
Tillers.fm Page 76 Tuesday, February 19, 2002 1:28 PM Interior Gear Case Assembly Inspection NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing the interior inspection. 1. Inspect the “L” portion of the shift lever where it engages into the shift fork. 2. Is the “L” portion of the shift lever bent? See Figure 3-217. NOTE The detent shaft must be held in place to move the shift fork. 2.
Tillers.fm Page 77 Tuesday, February 19, 2002 1:28 PM 3 2. Remove both sets of hex nuts, lock washers, and flat washers securing the front counterweight to the gear case assembly using a 3/4" socket and a 3/4" wrench. See Figure 3-220. 3. Remove the front counterweight. 4. Remove the lock nut securing the idler pulley assembly to the idler bracket using a 9/16” socket and a 9/16” wrench. See Figure 3-221. 3-77 5.
Tillers.fm Page 78 Tuesday, February 19, 2002 1:28 PM 11. Remove the spiral pin securing the indicator bracket to the shift lever using a drift punch and hammer. See Figure 3-225. NOTE Two self tapping screws on the right side and one on the left. 8. Remove the hex bolt, bell washer, and hex nut securing the left rear corner of the engine base to the gear case assembly using a 1/2" socket and a 1/2" wrench. 12.
Tillers.fm Page 79 Tuesday, February 19, 2002 1:28 PM 3 15. Remove and discard the zip tie securing the clutch control cable to the lower handle bar. 16. Remove the T-knob, flat washer, and hex screw from the depth stake. See Figure 3-228. NOTE DO NOT remove the lower rear hex cap screw and flange lock nut securing the handle brackets and spacer. 20. Remove the handle assembly from the unit. 21. Place chocks in front of the wheels to keep them from rolling. See Figure 3-230. 17.
Tillers.fm Page 80 Tuesday, February 19, 2002 1:28 PM 26. Remove the clevis pins and hair pins securing the right and left tine assemblies. See Figure 3-231. NOTE The outer two hex bolts are shorter then the middle two hex bolts. 29. Remove all four hex bolts securing the right portion of the shoulder spacer bracket to the tine shield and gear case assembly using a 1/ 2" socket and a 1/2" wrench. See Figure 3233. 27. Remove both tine assemblies from the tine shaft assembly.
Tillers.fm Page 81 Tuesday, February 19, 2002 1:28 PM 3 33. Remove the tine shield assembly from the gear case assembly. 31. Remove the right rear hex bolt, flat washer, and lock nut securing the rear tine shield to the gear case assembly using a 1/2" socket and a 1/2" wrench. See Figure 3-235. 34. Remove both clevis pins and hair pins securing the wheel assemblies to the wheel shaft assembly. See Figure 3-237. 32.
Tillers.fm Page 82 Tuesday, February 19, 2002 1:28 PM 2. Remove both self tapping washer head screws securing the gear positioner bracket to the gear case assembly using a 3/8” socket. See Figure 3-239. 8. Remove the hex nut and bell washer securing the wheel input sprocket assembly to the gear case using an 11/16” socket. 9. Remove the hex nut and lock washer securing the belt cover bracket using a 1/2" socket. NOTE Bracket looks like a “U” when installed correctly. 10.
Tillers.fm Page 83 Tuesday, February 19, 2002 1:28 PM 13. Clean and grease all the shafts. 14. Place a scraper between the two case halves and work around the perimeter of the gear case until all RTV has been broken free between the halves. NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing shift lever replacement. 1. Remove the snap ring securing the shift lever in position using a pair of retaining ring pliers. See Figure 3-243.
Tillers.fm Page 84 Tuesday, February 19, 2002 1:28 PM 7. Grasp the 18T tine shaft assembly and the 9T tine input sprocket assembly and raise both until the 9T tine input sprocket assembly comes free of the center jack shaft assembly. See Figure 3-248. NOTE Place the block of wood directly over the end of the input shaft and tap down on the assembly. 5. Remove the large thrust washer and the wide 30T forward tine idler gear assembly from the jack shaft. See Figure 3-247. 8.
Tillers.fm Page 85 Tuesday, February 19, 2002 1:28 PM 3 NOTE 12. Assemble in the reverse order above. The 11T inner gear assembly is stepped on both the top and bottom. See Figure 3-251. Tine Shaft Removal NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing tine shaft assembly removal. 1. Remove the large thrust washer and 30T spur gear from the center jack shaft. See Figure 3253. 11. Remove the shift lever from the gear case. See Figure 3-252.
Tillers.fm Page 86 Tuesday, February 19, 2002 1:28 PM free of the center jack shaft assembly. See Figure 3-254. 6. Remove and inspect the 18T tine shaft assembly for damage or wear. See Figure 3-257. 3 .Pivot the 9T tine input sprocket assembly and #50 chain away from the center jack shaft assembly. See Figure 3-255. 7. Inspect the weld securing the 18T gear to the tine shaft assembly to make certain it is not broken or defective. NOTE 8. Assemble in the reverse order above.
Tillers.fm Page 87 Tuesday, February 19, 2002 1:28 PM 3. Grasp the 18T tine shaft assembly and 9T tine input sprocket assembly and raise both until the 9T tine input sprocket assembly comes free of the center jack shaft assembly. See Figure 3-260. 3 NOTE Perform the Tiller Gear Case Assembly Removal and the Gear Case Separation sections prior to performing wheel shaft assembly removal. 1. Remove the large thrust washer and wide 30T forward tine idler gear assembly from the jack shaft. See Figure 3-259.
Tillers.fm Page 88 Tuesday, February 19, 2002 1:28 PM 5. Remove the upper 44T spur gear from the center jack shaft. 6. Remove the large flat washer and lower 44T spur gear. See Figure 3-262. 8. Rotate the hexed input shaft counterclockwise and examine the reverse motion. 9. Remove the large thrust washer from the wheel input sprocket assembly. See Figure 3264. 7. Make certain the 16T input spur gear is shifted to the reverse position. See Figure 3-263.
Tillers.fm Page 89 Tuesday, February 19, 2002 1:28 PM 11. Pivot the 10T wheel input sprocket assembly and #50 chain away from the wheel reduction jack shaft. 12. Inspect the 10T wheel input sprocket assembly for damage or wear. 13. Remove and inspect the 33T wheel shaft assembly. See Figure 3-266. 10. Grasp the 33T wheel shaft assembly and 10T wheel input sprocket assembly and raise both until the 10T wheel input sprocket assembly comes free. See Figure 3-265. 14.
Tillers.
CHIPPER SHREDDER VACUUM.fm Page 1 Tuesday, February 19, 2002 2:19 PM CHORE PERFORMER CHIPPER SHREDDER VACUUM REPLACING THE CHIPPER BLADE/REMOVAL AND REINSTALLATION OF THE IMPELLER ASSEMBLY: 4. Remove the three screws on the upper housing that secure the nozzle cover to the upper housing, using a phillips screwdriver. See Figure 4-3. 4 Figure 4-1. NOTE Figure 4-3. Prior to performing impeller removal, remove the vacuum bag or blower chute from the unit.
CHIPPER SHREDDER VACUUM.fm Page 2 Tuesday, February 19, 2002 2:19 PM 7. Remove the nozzle cover and lower housing from the upper housing. 11. Remove the chipper blade using a 3/16" allen wrench and a 1/2" open end wrench. 8. Remove the hex bolt and lock washer securing the impeller assembly to the crankshaft using a 9/16" socket. See Figures 4-5 and 4-6. 12. Replace chipper blade. NOTE NOTE Torque chipper blade screw to 210 to 250 inch pounds.
CHIPPER SHREDDER VACUUM.fm Page 3 Tuesday, February 19, 2002 2:19 PM TESTING THE SAFETY SWITCH NOTE A multimeter is a must for this section. If any of the following tests do not match, replace the safety switch. 1. Remove the vacuum bag or blower chute from the unit. 2. Set the multimeter to the Ohms position. 4 3. Make certain the multimeter is working properly. Hold both test probes apart and check the meter display. There will be an O.L. (open line) reading. Touch the probes together.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.fm Page 7 Tuesday, February 19, 2002 2:19 PM 4-1 4-1.1 During extensive factory testing, shredder models were tested above and beyond their recommended capabilities. It was discovered that on some units, when too large an object was placed into the hopper, damage to the cutting blade occurred. This damage usually results in a bent blade which can then strike the backup plate causing extensive damage to the unit and possible bending of the engine crankshaft.
CHIPPER SHREDDER VACUUM.fm Page 8 Tuesday, February 19, 2002 2:19 PM 4-1.6 Removing the Flail Screen. 4-1.7 Sharpening or Replacing Chipper Blades. NOTE If the discharge area becomes clogged, remove the flail screen and clean area. WARNING Disconnect spark plug wire and move it away from spark plug. WARNING Stop engine. Make certain shredder has come to a complete stop and disconnect spark plug wire from spark plug before unclogging chute. 1. Remove flail screen as instructed in previous paragraph.
CHIPPER SHREDDER VACUUM.fm Page 9 Tuesday, February 19, 2002 2:19 PM 4 3. Rotate impeller assembly by hand until you locate one of the chipper blades in the chipper chute opening. Remove blade using a 3/16 inch allen wrench on the outside of the blade and 1/2 inch wrench on the impeller assembly inside the housing. See Figure 4-17. 4. Remove the other blade in the same manner. 5. Replace or sharpen blades. NOTE If sharpening, make certain to remove an equal amount from each blade. 6.
CHIPPER SHREDDER VACUUM.fm Page 10 Tuesday, February 19, 2002 2:19 PM CAUTION Use caution when removing blade to avoid contacting weld bolts on housing. 7. When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit.
CHIPPER SHREDDER VACUUM.fm Page 11 Tuesday, February 19, 2002 2:19 PM 4 5. Remove center bolt from impeller and pull impeller assembly off crankshaft. 7. The flails may now be turned around or replaced. 6. The clevis pins can then be removed by tapping out spring roll pin from first spacer. Be sure to note direction of the flail edges and catch spacers and washers as you pull clevis pins from impeller assembly. 8.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.fm Page 14 Tuesday, February 19, 2002 2:19 PM 4-4. SHREDDER MODEL 650. 3. Remove four elastic lock nuts from the back of housing using a 1/2 inch wrench. Separate shredder into two halves. 4. Remove backup plate. NOTE When reassembling, make certain the opening on backup plate is toward the bottom of the unit. The back up plate may be reversed to provide a new cutting edge. 4-4.1 Maximum size branches for the hopper is 1/2 inch in diameter.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.fm Page 16 Tuesday, February 19, 2002 2:19 PM 4-5. CHIPPER-VACUUM (See Figure 4-26). 4-5.1 3. Hook the “Z” end of the cable into the drive clutch handle from the outside to the inside. Pliers will aid in assembly. See Figure 4-27. Do not attempt to shred or chip any material other than vegetation found in a normal yard (i.e., branches, leaves, twigs, etc.). Material such as stalks or heavy branches up to 3 inches in diameter may be fed into the chipper chute.
CHIPPER SHREDDER VACUUM.fm Page 17 Tuesday, February 19, 2002 2:19 PM 4-5.6 Shift Lever. The shift lever may be moved into one of eight positions. Run engine with throttle in the fast position. Use the shift lever to determine ground speed. See Figure 4-29. Forward—one of six speeds. Position number one (1) is the slowest. Position number six (6) is the fastest. Reverse—two reverse (R) speeds. “R” (all the way to the right) is the faster of the two. 4-5.7 Drive Clutch Handle.
CHIPPER SHREDDER VACUUM.fm Page 18 Tuesday, February 19, 2002 2:19 PM 4-5.10 Removing the Flail Screen. If the discharge area becomes clogged, remove the flail screen and clean areas as follows. 1. Stop the engine. Make certain the chipper-vacuum has come to a complete stop. Disconnect the spark plug wire before unclogging the discharge chute. 2. Remove the vacuum bag from the unit. 3.
CHIPPER SHREDDER VACUUM.fm Page 19 Tuesday, February 19, 2002 2:19 PM 4 6. Remove the other blade in the same manner. Replace or sharpen blades. If sharpening, make certain to remove an equal amount from each blade. Reassemble in reverse order. NOTE Make certain blades are reassembled with the sharp edge facing upward, as viewed from the access plate opening. 4-5.12 Changing the Friction Wheel Rubber.
CHIPPER SHREDDER VACUUM.fm Page 20 Tuesday, February 19, 2002 2:19 PM 4-5.13 Belt Removal and Replacement. 6. Remove the hex bolt and lock washer from the engine pulley. Slip the engine pulley off the engine shaft, and remove the belt from the pulley. See Figure 4-38. WARNING Disconnect the spark plug wire and move away from the spark plug. 1. Remove the plastic belt cover on the front of the engine by removing two self-tapping screws. See Figure 4-38. 2.
CHIPPER SHREDDER VACUUM.fm Page 21 Tuesday, February 19, 2002 2:19 PM SHIM INSTALLATION INSTRUCTIONS Use Service Kit Number 753-0673 when experiencing chipping difficulty. Install Service Kit as follows: 1. Disconnect the spark plug wire and move it away from the spark plug. 2. Remove the vacuum bag from the unit. 3. Remove the flail screen by removing the four self-tapping screws from the bottom of the discharge chute. Lift off the discharge chute assembly from the unit. See Figure 4-40. 4 4.
CHIPPER SHREDDER VACUUM.fm Page 22 Tuesday, February 19, 2002 2:19 PM the access opening. Carefully rotate the impeller to insure that there is adequate clearance between the chipper blade and chute assembly anvil. 9. Reinstall the access plate and secure with the two hex lock nuts removed in step 5. 10. Reinstall the belt cover on the front of the engine and secure with two self-tapping screws. 11. Reinstall the flail screen making certain the curved side is down. 12.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.fm Page 24 Tuesday, February 19, 2002 2:19 PM 4-5.14 Hose Attachment. Hose Attachment Kit part number 290-005 is available as optional equipment. 15-6.3 Under normal usage the bag is subject to wear and should be checked periodically. Be sure any replacement complies with the manufacturer’s recommendation. Wash bag periodically with water. Allow to dry thoroughly in the shade. Do not use heat. 4-6.4 4-6. POWER VACUUM MODEl 660 (See Figure 444.) 4-6.
CHIPPER SHREDDER VACUUM.
CHIPPER SHREDDER VACUUM.fm Page 26 Tuesday, February 19, 2002 2:19 PM 4-7.2 Gear Box (Self-Propelled Models Only). 5. Thread hex jam nut (thinner nut) onto clutch rod and lock it against lock nut. The gear box is lubricated with 3 ounces of High Temp. (450°F) grease. Order part number 737-0223. Periodically check lubricant level by removing the two self-tapping screws on the gear box cover and lifting off the cover. Do not change grease; simply add if necessary.
CHIPPER SHREDDER VACUUM.fm Page 27 Tuesday, February 19, 2002 2:19 PM 4-7.5 Belt Removal or Replacement for Self-Propelled Models Only. pulley with key on crankshaft, and slide housing and impeller assemblies onto crankshaft. 1. Remove nozzle or impeller guard from front of air duct housing. 2. Remove hex bolt and lock washer from center of impeller. A 9/16 inch socket wrench with extension is needed. See Figure 4-54. 4 3. Remove hand knob and belleville (cupped) washer from top of housing. 4.
CHIPPER SHREDDER VACUUM.fm Page 28 Tuesday, February 19, 2002 2:19 PM 4-7.6 Hose Attachment. A 10-foot vacuum hose having 4-inch diameter is available for modify- 4-28 ing the power vacuum. Order part number 290204-000.
CHIPPER SHREDDER VACUUM.fm Page 29 Tuesday, February 19, 2002 2:19 PM 4-8. LEAF BLOWERS MODELS 692 AND 693 (See Figure 4-58). 4-8.1 These leaf blowers have twin heavy duty 5 inch caster type ball bearing front wheels and 12 x 3 inch rear wheels with ball bearings for easier maneuverability. Unit also has a folding handle and continuous crank-type height adjustment. 4-8.4 2-Way Air Discharge. Your leaf blower is equipped with an adjustable chute deflector.
CHIPPER SHREDDER VACUUM.
SNOW THROWER.fm Page 1 Wednesday, February 20, 2002 10:28 AM SNOW THROWER PROBLEM FLOW CHART MODEL YEARS 1992 THROUGH 1996 600 & 700 SERIES MODELS (Small Frame) (Drive System Related Problems) 1. Clutch lock system not functioning correctly. Either it is staying in the locked mode or it is not locking at all. Answer a. Refer to Service Kit No. 753-0532.
SNOW THROWER.fm Page 2 Wednesday, February 20, 2002 10:28 AM 9. Friction wheel assembly part no. 718-0231 (1992 only) failing either by separation of the rubber friction material or the brazed hub separating. a. Replace component with new friction wheel service kit no. 753-0628 track models and 753-0629 wheel drive models. NOTE: Torque patch bolts in the hexagon shaft to (13 ft. lb. only) not 23 ft. lb. as shown on ST-117 and ST-118. 10. Friction wheel assembly part no.
SNOW THROWER.fm Page 3 Wednesday, February 20, 2002 10:28 AM 18. Auger housings 26", 28" and 30" cracking in each front corner at the bottom. a. If the cracking is only less than 1" then you can install support brackets part no. 705-5238 and 7055239. If the cracking is more serious then the housing must be replaced. NOTE: Beginning in 1995 the shave plate was changed. It now wraps up at each corner firmly securing the auger housing. 19. Auger welds failing prematurely.
SNOW THROWER.fm Page 4 Wednesday, February 20, 2002 10:28 AM MODEL YEARS 1992 THROUGH 1996 900 SERIES MODELS (Large Frame) (Drive System Related Problems) 1. Stiff shifting from low speed to high speed and back. a. There are (2) possible solutions to this problem. First check the drive clutch shaft assembly part no. 784-5563. Some were inadvertently painted with black powder paint instead of being phosphate coated.
SNOW THROWER.fm Page 5 Wednesday, February 20, 2002 10:28 AM SNOW THROWER PROBLEM FLOW CHART MODEL YEAR 1997 600/700 Series Snow Throwers Model Year 1997 Problem: Friction wheel rubber traction disc part number 735-0243 becoming separated from between the two side plates part number 784-5617. This problem was caused by the retooling of the side plates for manufacturing on a progressive die. The embossed height of the side plates was .030" to .
SNOW THROWER.fm Page 6 Wednesday, February 20, 2002 10:28 AM 4) Refer to illustration no. 5-2. (Service Bulletin W-102) Place hex bolt with four flat washers through the slot in the lift handle bracket. Secure with four flat washers, lock washer and nut. Four washers should go on each side of the bracket with the hex nut on the outside of the bracket. The outside diameter of the flat washer will limit the excessive travel of the lift handle latch bracket.
SNOW THROWER.fm Page 7 Wednesday, February 20, 2002 10:28 AM OVERVIEW OF “1995” SNOW THROWER CHANGES 1. Failure of the 735-0243 friction wheel rubber. Failure of the rubber ring is directly related to improper adjustment of the wheel drive cable. Ideally we are looking for the cable to be set so there is around 1"-11/2" of deflection when the cable is set and the clutch lever is not engaged. We have seen many instances where the cable is so tight you can strum a tune on it.
SNOW THROWER.fm Page 8 Wednesday, February 20, 2002 10:28 AM 4. Chute tilt cable guide 731-1313A replaces 731-1313. The new guide has significant reinforcement ribs on each side of the mounting area. 5. The new 684-0042A friction wheel assembly that is wedged together has in some instances separated. Testing has found that the powdered metal splined hub is not gripping the inside diameter of the friction wheel bearing. The vendor will be increasing the density of the powdered metal for 1997.
SNOW THROWER.fm Page 9 Wednesday, February 20, 2002 10:28 AM NEW FOR 1998 SNOW THROWERS —All new 800 series large frame wheel drive snow thrower. This new unit is very similar to the new style 900 series large frame units except it utilizes the new high profile auger housing and the new 16" impellor. The 800 series snow thrower also has a redesigned transmission very similar in design to the new 900 series units without the steerable feature.
SNOW THROWER.fm Page 10 Wednesday, February 20, 2002 10:28 AM SNOW THROWERS 5-1. 21-INCH SNOW THROWERS MODELS 180 THROUGH 191. 5-1.1 5-10 The only difference between Models 180 and 181 is Model 181 is an electric start unit. See Table 5-1.
SNOW THROWER.fm Page 11 Wednesday, February 20, 2002 10:28 AM 5-1.3 Belt Removal or Replacement. 1. Remove belt cover by removing screws with a 3/8 inch wrench and (if applicable) a Phillips screwdriver. See Figure 5-6. 5-1.2 Operating Controls. 5 1. Squeeze control handle to engage augers and drive unit forward. Pushing downward on handle will raise augers off the ground and stop the forward motion. See Figure 5-5.
SNOW THROWER.fm Page 12 Wednesday, February 20, 2002 10:28 AM 5-1.4 Belt Adjustment. NOTE Periodic adjustment of belt tension may be required due to normal stretch and wear on the belt. Adjustment is needed if augers seem to hesitate while turning but the engine maintains the same speed. 1. Remove belt cover. 2. There are three adjustment holes provided in the idler brake bracket assembly for belt tension adjustment.
SNOW THROWER.
SNOW THROWER.fm Page 14 Wednesday, February 20, 2002 10:28 AM GASOLINE AND OIL MIXTURE The snow thrower uses a two cycle engine that requires a mixture of gasoline and oil for lubrication of bearings and other moving parts. The correct fuel/oil mixture ratio for the five horsepower engine is 50 to 1. Use fuel/oil mixture chart shown below. 4. Unscrew cap and fill container with gasoline. Shake container again. CAUTION Observe recommended gasoline to oil mixture ratio to prevent engine damage.
SNOW THROWER.fm Page 15 Wednesday, February 20, 2002 10:28 AM ley, measure the spring while the clutch control on the handle is in the disengaged position. RECORD THIS MEASUREMENT. Pull the clutch control against the handle and again measure the spring. The measurement obtained with the spring extended should be 7/ 16 inch greater than with the spring unextended. If cable adjustment becomes necessary, use the adjusting nuts on the cable to alter the length.
SNOW THROWER.fm Page 16 Wednesday, February 20, 2002 10:28 AM 5-2. 20-INCH SNOW THROWER MODEL 225 (See Figure 5-11). 5-2.1 5-2.2 Auger Clutch Control Adjustment. To check for correct adjustment, squeeze auger clutch grip against handle so lockout rod is engaged. With lockout rod engaged, you should be able to get a matchbook cover between the coils of the compression spring (spring should not be compressed tightly).
SNOW THROWER.fm Page 17 Wednesday, February 20, 2002 10:28 AM 5-2.4 Rear Axle Chain Adjustment. 3. Tighten hex bolts. 1. Tip snow thrower forward so it rests on auger housing. 4. If chain is still loose, readjust. 2. Loosen two hex nuts at wheel axle on the right hand side of snow thrower housing. See Figure 5-15 NOTE Lubricate all chains, bearings, gears and shifting mechanism with engine oil at least once a season or after every 25 hours of operation. Avoid getting oil on V-belts and pulleys. 3.
SNOW THROWER.fm Page 18 Wednesday, February 20, 2002 10:28 AM 1. Remove three self-tapping screws from belt cover using a 7/16 inch wrench. See Figure 516. 2. Remove belt keeper by removing self-tapping screw. A 9/16 inch wrench is required. See Figure 5-17. 5. Removing large shoulder bolt which acts as a belt keeper by removing hex nut and lock washer on the outside of frame assembly. A 9/16 inch wrench is required. See Figure 5-19. 6. Remove auger drive belt as follows: 3.
SNOW THROWER.fm Page 19 Wednesday, February 20, 2002 10:28 AM 5 b. Lift belt out of sheave of bottom pulley. c. Slide belt out of bottom of chain case. d. Install new belt. 7. Remove drive belt as follows: a. First slip auger drive belt off engine pulley. See Figure 5-21. b. Slip drive belt over double engine pulley. c. Slide belt off bottom pulley and out of bottom of chain case. d. Install new drive belt. e. Reinstall auger drive belt. 8. Reassemble by reversing steps 1 through 7. 9.
SNOW THROWER.
SNOW THROWER.fm Page 21 Wednesday, February 20, 2002 10:28 AM 5-3.3 Drive Clutch Adjustment. 1. Unhook spring at the lower end of engagement rod from drive bracket. See Figure 5-23. 5 3. Squeeze auger clutch grip all the way down against handle and check the position of brake linkage. It should be against idler pulley. If necessary, adjust ferrule on end of auger rod until the slot on brake linkage is over against idler pulley with auger clutch grip all the way down against handle. See Figure 5-25 2.
SNOW THROWER.fm Page 22 Wednesday, February 20, 2002 10:28 AM 5-3.6 Changing Friction Wheel. 1. Move shift lever into reverse position. This will move friction wheel over to the extreme left side inside the frame. 2. Tip snow thrower up and forward so that it rests on housing or optional drift cutters. 3. Remove bottom frame cover by using a 3/8 inch wrench to remove six self-tapping screws. 4. Using a 1/2 inch wrench, remove three hex bolts holding friction wheel to friction wheel adapter.
SNOW THROWER.fm Page 23 Wednesday, February 20, 2002 10:28 AM 5-3.7 Drive Wheels (Models 550 and 586 Only). The wheels on the Models 550 and 586 snow throwers may be adjusted for three different methods of operation. The adjustment is made by placing the klik pins in one of the two different holes on each side of the unit as follows. See Figure 5-28. 3. Remove two engine pulley belt guards. See Figure 5-30. 1. Free wheeling operation—Place both klik pins in the outside hole in axle.
SNOW THROWER.fm Page 24 Wednesday, February 20, 2002 10:28 AM 6. To remove auger drive belt, remove four shoulder bolts and belleville washers at auger pulley. A 3/4 inch wrench is required. See Figure 5-32. 7. Remove and replace auger belt. 8. To remove drive belt, disconnect extension spring at engine plate. 9. Remove drive belt from engine pulley and bottom of drive pulley. See Figure 5-33. 10. Replace belt and reassemble in reverse order. 11. Reassemble two snow thrower halves.
SNOW THROWER.fm Page 25 Wednesday, February 20, 2002 10:28 AM 5-4. SNOW THROWERS MODELS 552 AND 588 (See Figure 5-35). 5 5-4.1 Drive clutch adjustment. Refer to Models 440 and 450 in paragraph 5-3.3. 5-4.2 Auger clutch adjustment. Refer to Models 440 and 450 in paragraph 5-3.4. 5-4.3 Shift rod adjustment. Refer to Models 440 and 450 in paragraph 5-3.2. 5-4.4 Belt removal and replacement. Refer to Models 440 and 450 in paragraph 5-3.8. 5-4.5 Track Chain Replacement. 1.
SNOW THROWER.fm Page 26 Wednesday, February 20, 2002 10:28 AM 5-4.6 2. Loosen hex bolt on track adjuster. Track Adjustment. WARNING NOTE Disconnect spark plug wire from spark plug and ground against engine. Drain fuel from fuel tank. The track is properly adjusted when there is approximately 1/2 inch deflection in the track (track can be raised 1/2 inch). 3. Insert a screwdriver between tab on adjuster and heavy washer and pivot track adjuster to tighten or loosen track.
SNOW THROWER.
SNOW THROWER.fm Page 28 Wednesday, February 20, 2002 10:28 AM The track lock is located on the right side of snow thrower and is used to select the position of the housing and the method of track operation. Move the lever to the right, then forward or backward to one of the three positions. Use lever positions to meet different operating conditions as follows. after every 10 hours of operation. Avoid getting oil on friction wheel and drive plate. See Figure 5-41. 1.
SNOW THROWER.
SNOW THROWER.fm Page 30 Wednesday, February 20, 2002 10:28 AM 5-5.5 Auger Belt Removal and Replacement. NOTE 1. Remove chute crank at chute assembly by removing cotter pin and flat washer. Upon reassembly, make certain spacers are on the carriage bolts inside the side cover. 2. Remove side and rear belt covers from right hand side of auger housing as follows: c. a. Model 345: Remove hex nut and belleville washer from front of skid shoe. Remove two self-tapping screws. See Figure 5-43. b.
SNOW THROWER.fm Page 31 Wednesday, February 20, 2002 10:28 AM 5 5. Loosen (do not remove) bottom bolts which attach auger housing to frame assembly. 6. Remove two engine pulley belt guards and shoulder bolts. Disconnect fan belt from engine pulley. See Figure 5-48. 9. Remove belt from auger pulleys as follows: a. Model 345: Remove center bolts from both idler pulleys. Slide auger pulleys out enough to slide belt off. b.
SNOW THROWER.fm Page 32 Wednesday, February 20, 2002 10:28 AM 5-6. 28-INCH SNOW THROWERS MODELS 840 AND 850 (See Figure 5-51). 5-6.1 Drive and Auger Clutch Adjustments. Adjust drive and auger clutch as follows: NOTE The lockout rods are labeled L and R for the left and right hand sides of the unit. 1. Approximate initial settings for the lockout rods are as follows: the left hand lockout rod for the drive clutch should have approximately 1-1/2 inches of thread showing below the nut.
SNOW THROWER.fm Page 33 Wednesday, February 20, 2002 10:28 AM 5-6.2 Shift Rod Adjustment Check. Check shift rod adjustment as follows: 5. Insert end of rod into hole in shift lever and secure with hairpin cotter. WARNING 6. Recheck the adjustment. Disconnect spark plug wire and ground it against engine. 5-6.4 Changing Friction Wheel. Change friction wheel as follows: 1. Place shift lever in the neutral position. Push the unit back and forth. It should move freely. 1.
SNOW THROWER.
SNOW THROWER.fm Page 35 Wednesday, February 20, 2002 10:28 AM 6. Assemble new friction wheel so the cupped side is towards friction wheel adapter. 7. Fasten friction wheel to friction wheel adapter with three lock washers and hex nuts. Tighten each nut in rotation until they are finger tight. Spin wheel to see that it is not cocked on hub. Then tighten using two 1/2 inch wrenches. 8. Replace rear cover. 5-6.5 Belt Removal and Replacement. Remove and replace belt as follows: 1.
SNOW THROWER.fm Page 36 Wednesday, February 20, 2002 10:28 AM 6. To separate auger housing from frame assembly, two people are required. One person is in the operating position. Squeeze auger clutch grip (right hand) as you raise up on handles. The other person is in front of the unit. Push down on housing or optional drift cutters. The unit will separate into two pieces. See Figure 5-60. 2. Remove auger drive belt. NOTE If drive belt needs to be replaced, skip to paragraph 5-6.
SNOW THROWER.fm Page 37 Wednesday, February 20, 2002 10:28 AM NOTE Shoulder of the bolt must go through both sides of idler bracket assembly. 8. Reassemble belt cover and chute crank. 5-6.7 Drive Belt Removal. To remove drive belt, proceed as follows: 1. Remove cotter pin which holds linkage rod to idler bracket assembly. 2. Unhook extension spring from engine plate. See Figure 5-62. 5 3. Remove drive belt from engine pulley and bottom drive pulley. 5-7.2 Drive clutch adjustment.
SNOW THROWER.fm Page 38 Wednesday, February 20, 2002 10:28 AM 1. The augers are secured to spiral shaft with two hex bolts and hex lock nuts. If you hit a foreign object or ice jam, the snow thrower is designed so that the hex bolts will shear. See Figure 566. 5-7.6 2. If augers will not turn, check to see if hex bolts have sheared. Two replacement hex bolts and hex lock nuts have been provided with the snow thrower. For future use, order part number 710-0891 (hex bolt 5/16-18 x 1.
SNOW THROWER.
SNOW THROWER.fm Page 40 Wednesday, February 20, 2002 10:28 AM 5-8. SNOW THROWERS MODELS 610E, 640F, 660G, 616E, 646F AND 666G (See Figure 568). 1994 to Present: 1. With the snow thrower tipped forward (be certain to drain the gasoline or place plastic film under the gas cap if the snow thrower has already been operated), remove the frame cover underneath the snow thrower by removing six self-tapping screws. 2.
SNOW THROWER.fm Page 41 Wednesday, February 20, 2002 10:28 AM NOTE WARNING Auger drive and traction lockout rods replaced by cables in 1992. Disconnect and ground spark plug wire against engine. a. Loosen hex nut and thread cable in or out as necessary. See Figure 5-70. a. With clutch grips released, push the unit back and forth. You should be able to move it. b. Engage traction drive clutch by squeezing clutch grip against right handle. Push the unit back and forth. The wheels should lock up. 2.
SNOW THROWER.fm Page 42 Wednesday, February 20, 2002 10:28 AM 5-8.5 Blade impellers, in 1991 and prior years, were a 4-blade style. In 1992 they were changed to a 3-blade style. See Figure 5-72. 5-8.6 Augers were also changed in 1992. They are now notched to break up ice and packed snow. See Figure 5-73. 5-8.7 Replacing Friction Wheel Rubber. The rubber on the friction wheel is subject to wear and should be checked after 25 hours of operation, and periodically thereafter.
SNOW THROWER.fm Page 43 Wednesday, February 20, 2002 10:28 AM 2. Remove self-tapping screws from frame cover underneath snow thrower. 3. Remove klik pins which secure the wheels, and remove wheels from axle. 4. Remove gear shaft from the unit by removing bolts, lock washers and flat washers from each side of the frame. See Figure 5-74. 5 8. Slide the friction wheel assembly up onto shift mechanism and slide gear shaft back into the unit. 9. Reassemble in reverse order. 10.
SNOW THROWER.fm Page 44 Wednesday, February 20, 2002 10:28 AM 2. Remove plastic belt cover on the front of engine by removing two self-tapping screws. See Figure 5-76. 6. To remove front auger drive belt, push idler pulley to the left and lift front auger drive belt from front auger pulley. See Figure 5-79. 3. Unthread the bottom of auger cable from the top of cable leaving hex nut in place. 4. Remove six hex bolts, lock washers and hex nuts which attach auger housing assembly to the frame.
SNOW THROWER.fm Page 45 Wednesday, February 20, 2002 10:28 AM 5 5. Roll the front and rear auger belts off the engine pulley. See Figure 5-82. 1994 to Present: 6. Unhook the idler spring from the hex bolt on the auger housing. NOTE It is necessary to remove both belts in order to change either one. If changing just one belt, be certain to check the condition of the other belt (model 616E has only one auger belt). 1.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.fm Page 52 Wednesday, February 20, 2002 10:28 AM 5-9. STEERABLE TRACK DRIVE MODELS 612E AND 642F (See Figure 5-85). 5-9.5 Track Adjustment. Adjust track as follows: WARNING Disconnect spark plug wire from spark plug and ground against engine. Drain fuel from fuel tank. CAUTION The tension on the tracks of the snow thrower can be adjusted. There are track adjusters on each side of the unit. It is important that each track is equally adjusted on both sides. 1.
SNOW THROWER.fm Page 53 Wednesday, February 20, 2002 10:28 AM 5-9.6 Drive System. Completely new drive system with fewer moving parts combine PTO friction drive that prolongs transmission life and increases durability with quieter operation. Note ring gear and planetary drive system that allows operator to control each drive track for quick easy change of direction. See Figure 588. 5-9.7 Replacing Friction Wheel. Refer to Model 610E in paragraph 5-8.7. 5-9.8 Belt Removal and Replacement.
SNOW THROWER.
SNOW THROWER.
SNOW THROWER.
Log Splitters 2.fm Page 1 Wednesday, February 20, 2002 1:35 PM LOG SPLITTERS ADDENDUM: 6-1 WEDGE PLATE ADJUSTMENT As normal wear occurs, periodically the need of the adjustment of the bolts on the side of the wedge plate should be made to eliminate the excess space between the wedge plate and the beam. The wedge plate and the Gib Plates and surface of the beam and edges of the beam should be lubricated and adjusted as close as possible and allow for free movement as the wedge travels the beam.
Log Splitters 2.fm Page 2 Wednesday, February 20, 2002 1:35 PM 2. Remove and replace the Gibs. Reassemble the Gib plates, making certain flat washers are in place under the Gib plates. 4. Disconnect the spark plug wire. Prime the pump by pulling the recoil starter, to turn the engine over, approximately 10 times. 3. Readjust the bolts on the side of the wedge plates as instructed above. 5. Reconnect the spark plug wire. 6. Start engine. 6-1.3 PREPARING THE LOG SPLITTER 7.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.fm Page 5 Wednesday, February 20, 2002 1:35 PM 6-2. LOG SPLITTER MODEL 632 (See Figure 6-3). 6-2.1 The Model 632 log splitter will split hardwood logs up to 26 inches long. It is trailer mounted with a hitch that accommodates a 1-7/8 inch ball for towing. The wheels have high-speed tapered roller bearings. For a summary of specifications for Model 632, see Table 6-1. 6-2.2 Log Splitter Operation. 1.
Log Splitters 2.
Log Splitters 2.fm Page 7 Wednesday, February 20, 2002 1:35 PM 3. The original factory setting for the unloading valve is designed to provide maximum flow while remaining below engine stalling load. CAUTION Never operate at relief valve pressure for more than a few seconds. NOTE Splitting capability is not affected by the setting of the unloading valve. Do not attempt to adjust or reset it without a pressure gauge (should be performed by an authorized service dealer only). 6-2.3 3.
Log Splitters 2.fm Page 8 Wednesday, February 20, 2002 1:35 PM The user should not attempt to adjust or change the setting of the relief valve. 1. Place coupling half onto engine shaft. Make certain there is clearance between coupling half and engine. Tighten set screw. 2. Mount pump onto coupling support bracket. Tighten securely. 5. Because of the potential for system damage, the relief valve is carefully and precisely preset by the manufacturer. 3.
Log Splitters 2.
Log Splitters 2.fm Page 10 Wednesday, February 20, 2002 1:35 PM There are two log splitter cylinder manufacturers. To identify Best Metal, the company’s name and part number will be cast on the cylinder. 13. Clean piston seal groove and install O-ring and backup washer. NOTE 15. Lube tube ID and OD of piston assembly with clean hydraulic fluid and slide piston into tube. 14. Thoroughly clean ID of tube assembly. To remove the piston end on Best Metal, you must use a spanner wrench. 6-2.6 16.
Log Splitters 2.fm Page 10 Wednesday, February 20, 2002 1:35 PM There are two log splitter cylinder manufacturers. To identify Best Metal, the company’s name and part number will be cast on the cylinder. 13. Clean piston seal groove and install O-ring and backup washer. NOTE 15. Lube tube ID and OD of piston assembly with clean hydraulic fluid and slide piston into tube. 14. Thoroughly clean ID of tube assembly. To remove the piston end on Best Metal, you must use a spanner wrench. 6-2.6 16.
Log Splitters 2.fm Page 11 Wednesday, February 20, 2002 1:35 PM CAUTION Drain hydraulic fluid and flush reservoir tank assembly and hoses each time repair work is performed in the tank, hydraulic pump or valve. Contaminants in the fluid will damage hydraulic components. 3. Remove inlet hose from fitting above. 4. Remove fitting from beam and pull out strainer tube assembly. CAUTION The beam needs to be in the down position while using the splitter to avoid oil discharge from the vent.
Log Splitters 2.
Log Splitters 2.fm Page 13 Wednesday, February 20, 2002 1:35 PM 6-3.3 Belt Removal or Replacement. 5. Loosen three engine mounting bolts using a 1/2 inch wrench. See Figure 6-13. WARNING Disconnect spark plug wire from spark plug and ground it against engine block. 1. Drain gasoline from fuel tank or place a piece of plastic under cap to prevent leakage. 2. Tip splitter on one side. 3. Remove four self-tapping screws from bottom belt cover and frame. See Figure 6-11. 6. Install new belt. 7.
Log Splitters 2.fm Page 13 Wednesday, February 20, 2002 1:35 PM 6-3.3 Belt Removal or Replacement. 5. Loosen three engine mounting bolts using a 1/2 inch wrench. See Figure 6-13. WARNING Disconnect spark plug wire from spark plug and ground it against engine block. 1. Drain gasoline from fuel tank or place a piece of plastic under cap to prevent leakage. 2. Tip splitter on one side. 3. Remove four self-tapping screws from bottom belt cover and frame. See Figure 6-11. 6. Install new belt. 7.
Log Splitters 2.fm Page 14 Wednesday, February 20, 2002 1:35 PM 6-4.2 Specifications. For summaries of the specifications of Models 642 and 645, see Tables 64 and 6-5.
Log Splitters 2.fm Page 15 Wednesday, February 20, 2002 1:35 PM 6-4.3 The hydraulic pump is one of two types. As complete units, the two pumps are interchangeable (refer to parts list for part number). If it is necessary to determine the specific type of pump on your unit, refer to Figures 6-16 and 6-17. 6 NOTE Periodically lubricate the area of the engagement handle which contracts the slotted bracket on the beam to prevent excessive wear. 6-4.4 The engagement handle has 3 positions: NOTE 1.
Log Splitters 2.fm Page 16 Wednesday, February 20, 2002 1:35 PM All two-stage log splitter pumps have the same basic hydraulic circuit. Two gearsets (one large and one small) use a common inlet and outlet. A sequence valve bypasses the flow of the larger pump gearset at a preset pressure. A check valve at the discharge between the two gearsets allows both flows to combine at low pressure, and isolates the larger gearset from discharge above sequence pressure.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.fm Page 28 Wednesday, February 20, 2002 1:35 PM Two Stage High/Low Hydraulic Pumps COMPACT DESIGN CAST IRON CONSTRUCTION Two Volume High/Low Hydraulic Pumps are compact, two stage, external gear pumps designed for use at elevated pressures. They are ideal for press-type applications requiring fast approach/retract speeds and slower peak actuator work speeds because of horsepower limitations or safety constraints.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.fm Page 32 Wednesday, February 20, 2002 1:35 PM Two Stage Pump Log Splitter Pump User’s Guide DO 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Use clean oil. Use an oil filter (preferable at the pump inlet). Mount the pump properly (check alignment). Use flexible “spider-type” coupling with clearance between pump and engine driveshafts. Only split wood lengthwise (with the grain). Check tank oil level regularly. Make sure hoses are not pinched or blocked.
Log Splitters 2.fm Page 32 Wednesday, February 20, 2002 1:35 PM Two Stage Pump Log Splitter Pump User’s Guide DO 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Use clean oil. Use an oil filter (preferable at the pump inlet). Mount the pump properly (check alignment). Use flexible “spider-type” coupling with clearance between pump and engine driveshafts. Only split wood lengthwise (with the grain). Check tank oil level regularly. Make sure hoses are not pinched or blocked.
Log Splitters 2.fm Page 33 Wednesday, February 20, 2002 1:35 PM Directing the flow to the rear of the cylinder causes it to extend. The cylinder will extend quickly until it meets resistance. When the pressure required to overcome the resistance exceeds the sequence setting, the cylinder will slow down but keep moving forward. A relief valve in the pressure line will bypass all pump discharge if the pressure reaches a preset maximum.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.fm Page 36 Wednesday, February 20, 2002 1:35 PM LOG SPLITTER WORK SHEET WORK SHEET ________ Checked ________ Checked ________ Checked ________ RPM (3400-3600 range) FOR TEST KIT PART NUMBER 759-3742 WORK SHEET VIDEO TEXT VIDEO TEXT This program covers testing procedures for the hydraulic log splitter. Proper testing and maintenance procedures will assure that the log splitter will work safely and properly. As a standard serviced procedure, replace the oil filter.
Log Splitters 2.fm Page 37 Wednesday, February 20, 2002 1:35 PM ________PSI (should be O) The pressure gauge should read zero if the pump is operating correctly. Begin at the top and close the needle valve slowly clockwise until the engine begins to labor. ________ Checked As the pressure gauge increases to between 500 and 700 PSI and the flow increases to between 1 and 3 GPM, the high volume check valve should close and the engine RPM will return to normal.
Log Splitters 2.fm Page 38 Wednesday, February 20, 2002 1:35 PM Open the needle valve to a fully open position. Start the engine and run it at full throttle. Hold the valve handle in the fully open position until the ram bottoms out. Hold the control valve open in this position. Slowly close the needle valve and take a reading of the pressure and flow. Immediately open the needle valve to avoid seal damage. ______ PSI (1500 - 3200 range) ______ GPM (1 - 2.
Log Splitters 2.
Log Splitters 2.
Log Splitters 2.fm Page 33 Wednesday, February 20, 2002 1:35 PM Directing the flow to the rear of the cylinder causes it to extend. The cylinder will extend quickly until it meets resistance. When the pressure required to overcome the resistance exceeds the sequence setting, the cylinder will slow down but keep moving forward. A relief valve in the pressure line will bypass all pump discharge if the pressure reaches a preset maximum.
Log Splitters 2.fm Page 41 Wednesday, February 20, 2002 1:35 PM 550 Log Splitter Set-up Procedures 24. Open the plastic bag containing all the owners manuals, and read all information carefully before continuing. See Figure 6-24. NOTE Figure 6-24 Make certain that all staples are removed or bent over before continuing. Contents of Crate 1. Reservoir Tank and Engine/Pump Assembly 20. Remove the plastic bag covering all the log splitter components. 2. Wedge, Beam and Cylinder Assembly 21.
Log Splitters 2.fm Page 42 Wednesday, February 20, 2002 1:35 PM Beam Support/Latch Bracket Installation 1. Separate all the components of the beam support/latch bracket using a 9/16" socket and a 9/16" wrench. See Figure 6-25. 2. Pivot the jack stand to the operating position, and secure it to the tube using the clevis pin and spring clip previously removed. Hitch Installation 1. Separate all the components of the hitch assembly using a 9/16" socket and a 9/16" wrench. See Figure 6-27. Figure 6-25. 2.
Log Splitters 2.fm Page 43 Wednesday, February 20, 2002 1:35 PM 6. By hand, secure both wheel assemblies with the castle nuts removed earlier. NOTE The hardware that is used to assemble this section will be found in place on the frame assembly and the tongue assembly. The optional fender hardware will be found with the 7. Snug the castle nuts down using a 1-1/8" wrench, and then back the castle nuts off 1/3 of a turn. NOTE 1. Raise the reservoir and support it 8" above the ground. See Figure 6-29.
Log Splitters 2.fm Page 44 Wednesday, February 20, 2002 1:35 PM 1. Locate the hex bolts, flat washers, lock washers and hex nuts used to secure the fenders to the frame assembly. See Figure 6-32. Figure 6-33. 3. Lower the reservoir assembly. Figure 6-32. Beam to Reservior Frame Assembly Installation NOTE This hardware should have been in the same plastic bag as the wheel hub caps. 2.
Log Splitters 2.fm Page 45 Wednesday, February 20, 2002 1:35 PM Figure 6-37. Figure 6-35. 5. Grasp the tongue assembly and raise it up. 2. Disconnect the high pressure hydraulic hose from the 45 degree pump adapter using two 7/8" wrenches. 6. Roll the reservoir frame assembly into position up against the beam assembly. 3. With a partner or a mechanical aid, raise the beam assembly to the vertical position until it is standing on the rectangular foot. See Figure 636 7.
Log Splitters 2.fm Page 46 Wednesday, February 20, 2002 1:35 PM Figure 6-40. Figure 6-38. 3. Remove the plastic protective cap from the fitting on top of the filter head housing. Pressure Hose Installation 4. Attach the free end of the return hose to the filter head housing inlet. See Figure 6-39. 1. Place the beam assembly in the horizontal position. See Figure 6-41. Figure 6-41. Figure 6-39. 5.
Log Splitters 2.fm Page 47 Wednesday, February 20, 2002 1:35 PM 2. Remove the reservoir vent plug using a 5/8" wrench. See Figure 6-44. Figure 6-42. Figure 6-44. Engine Preparation NOTE See engine operating instructions manual. and maintenance 3. Fill the reservoir tank using Dexron III automatic transmission fluid, or a 10W non-foaming hydraulic fluid, until the fluid level is between 3" and 3 1/2" from the top of the inlet vent tube. 4.
Log Splitters 2.fm Page 48 Wednesday, February 20, 2002 1:35 PM NOTE The log splitter hydraulic system is self bleeding. 13. Shut the engine off and fill the reservoir assembly to the correct level. See Figure 6-47. Figure 6-45. 10. Retract the wedge assembly fully. 11. Shut the engine off and fill the reservoir assembly to the correct level. 12. Start the engine and extend and retract the wedge assembly 10 to 12 full cycles to remove trapped air in the system. See Figure 6-46. Figure 6-47.
Log Splitters 2.fm Page 49 Wednesday, February 20, 2002 1:35 PM Log Splitter Wedge Plate Assembly Adjustments IMPORTANT: As normal wear occurs, the wedge assembly must be adjusted to make certain the tolerances are correct for smooth operation. See Figure 6-48. Figure 6-50. 15. Start the log splitter and position the wedge assembly at the midpoint between the rectangular foot and the end of the hydraulic cylinder. Figure 6-48. 16. Shut the log splitter off. 14.
Log Splitters 2.fm Page 50 Wednesday, February 20, 2002 1:35 PM Figure 6-51. Figure 6-53. 21. Shut the log splitter off. 2. Grasp the right side of the wedge assembly from below the back plate and raise it up, making certain there is not excessive tolerance. 22. Make certain the face and back side of the beam assembly are well lubricate where the wedge assembly travels. See Figure 6-52. NOTE The wedge plate should not rise off the beam face more than 1/16". 3.
Log Splitters 2.fm Page 51 Wednesday, February 20, 2002 1:35 PM Figure 6-54. IMPORTANT: Periodically remove and inspect the adjustable gibs between the wedge plate and the back plate as follows: See Figure 6-55. Figure 6-56. 2. Slowly remove the flat washers, floating gib plate and adjustable gibs from between the wedge plate and the back plate. See Figure 657. Figure 6-55. NOTE The adjustable gibs can be rotated and or turned over for even wear. 1.
Log Splitters 2.fm Page 52 Wednesday, February 20, 2002 1:35 PM 3. Remove, inspect, and replace the adjustable gibs if necessary. See Figure 6-58. 5. Tighten the tensioning hex cap screws equally until they are snug using a 9/16" wrench. 6. Slowly back off the tensioning hex cap screws until the wedge assembly slides across the full travel area. 7. Hold the hex cap screws in place with a 9/16" wrench, and secure the hex jam nuts up against the floating gib plate using a 9/16" wrench. 8.
Log Splitters 2.fm Page 53 Wednesday, February 20, 2002 1:35 PM Log Splitter Hydraulic Troubleshooting Test Kit #759-3742 Test Kit Components. See Figure 6-59. NOTE When installing the hydraulic oil filter, lubricate the seal with hydraulic fluid, rotate the filter clockwise by hand until it is snug and complete the installation by rotating the filter 1/8 of a turn clockwise beyond the snug position. 2. Check the fluid level and add (or remove) fluid as required.
Log Splitters 2.fm Page 54 Wednesday, February 20, 2002 1:35 PM NOTE Make certain the spark plug wire has been removed from the spark plug, and it is grounded to the engine block. Simply grasp the coupling assembly by hand and make certain the engine crankshaft and pump input shaft rotates with the coupling. 4. Make certain the set screws in the upper and lower coupling halves are tight using an 1/8" allen wrench._____ NOTE Remove and loctite the set screws if they are loose. 5.
Log Splitters 2.fm Page 55 Wednesday, February 20, 2002 1:35 PM Pump Troubleshooting 1. Latch the log splitter in the horizontal position._____ See Figure 6-68. Figure 6-66. 10. Quickly reconnect the suction hose and secure it in place using a 5/16" socket._____ 11. Check the fluid level and replace the lost fluid._____ 12. Start the engine and verify that the engine is operating between 3500 and 3600 RPM using a tachometer._____ See Figure 6-67. Figure 6-68. 2.
Log Splitters 2.fm Page 56 Wednesday, February 20, 2002 1:35 PM 4. Set the high pressure hydraulic hose into an oil drain container. Test Kit Installation Procedures High Pressure Hydraulic Hose to Pressure Gauge Connector 1. Secure the male union, female union, and high pressure hydraulic hose connector to the pressure gauge connector using a 1-1/8" wrench, 1-/16" wrench, 7/8" wrench, and a large adjustable wrench.
Log Splitters 2.fm Page 57 Wednesday, February 20, 2002 1:35 PM NOTE If the engine is not running to specifications, the test results will not be valid. See the engine service manual to correct the engine RPM. 4. The log splitter must be run for a short time to bring the hydraulic fluid up to 130 degrees Fahrenheit before continuing this test._____ 5. Record the GPM of the fluid flow at the flow meter._____ See Figure 6-75. Figure 6-73. 2. Start the engine and move the throttle (if equipped) to fast.
Log Splitters 2.fm Page 58 Wednesday, February 20, 2002 1:35 PM Figure 6-76. 9. Figure 6-77. NOTE Record the PSI._____ NOTE The PSI reading should be between 300 and 700 PSI. DO NOT close the needle valve fully. This is the main pressure hose, and the pump does not have a relief valve. 2. Record the PSI._____ This is PSI “A” 10. Record the GPM._____ NOTE NOTE The GPM reading should be between 1 and 3 GPM. The PSI “A” should be between 1500 and 3200 PSI. 3. Record the GPM.
Log Splitters 2.fm Page 59 Wednesday, February 20, 2002 1:35 PM Control Valve and Hydraulic Cylinder Troubleshooting 4. Hold the control valve handle in the forward position. NOTE 5. Record the PSI._____ (This is PSI “B”) See Figure 6-80. This section is to be used after the Gen-eral Inspection and Pump Troubleshooting sections have been performed._____ • Scan the Final Pump Pressure Test section and enter the recorded test result from PSI “A”_____ and GPM “A”_____ Test Procedures 1.
Log Splitters 2.fm Page 60 Wednesday, February 20, 2002 1:35 PM 12. If the (PSI “B”) is less than the recorded (PSI “A”) in the Final Pump Pressure Test, there may be a problem with the control valve, pressure relief valve or hydraulic cylinder. Continue through this section to determine which part is faulty. Control Valve, Pressure Relief Valve and Hydraulic Cylinder Testing 1. Make certain the wedge assembly is in the fully retracted position._____ See Figure 6-83. 13.
Log Splitters 2.fm Page 61 Wednesday, February 20, 2002 1:35 PM 2. Rotate the needle valve counter-clockwise to the completely open position._____ 3. Start the engine and move the throttle (if equipped) to fast._____ NOTE Most log splitters do not have a throttle control, they are set to run at full throttle. 4. Move the control valve handle to the forward position until the wedge assembly is at the end of its travel._____ 5.
Log Splitters 2.fm Page 62 Wednesday, February 20, 2002 1:35 PM 3200 PSI limit, the Pressure Relief Valve Adjustment section must be performed to lower the PSI._____ 11. If the recorded PSI “C” is below the PSI recorded earlier (PSI “B”), the Pressure Relief Valve Adjustment section must be performed in an attempt to bring the PSI back into the correct specifications before condemning the control valve. 12. Shut the log splitter off._____ Pressure Relief Valve Adjustment Figure 6-88.
Log Splitters 2.fm Page 63 Wednesday, February 20, 2002 1:35 PM 10. Momentarily close the needle valve completely, record the PSI gauge and immediately open the needle valve back up._____ 19. If the pressure relief valve will not adjust to the correct specifications, REPLACE THE CONTROL VALVE. See Figure 6-90. CAUTION This step must be performed very quickly or damage may occur to the hydraulic system. 11. Record the PSI._____ The new pressure reading is (and replaces the previous reading) (PSI “C”). 12.
Log Splitters 2.fm Page 64 Wednesday, February 20, 2002 1:35 PM 3. Start the engine and move the throttle (if equipped) to fast._____ NOTE Seal kits are available from your parts suppliers. See Figure 6-92. NOTE Most log splitters do not have a throttle control, they are set to run at full throttle. 4. Move the control valve handle to the forward position until the wedge assembly is at the end of its travel._____ 5. Hold the control valve handle in the forward position. 6. Record the PSI.
Log Splitters 2.fm Page 65 Wednesday, February 20, 2002 1:35 PM Log Splitter Hydraulic Pump Removal IMPORTANT: Make certain the log splitter is locked into the horizontal position. See Figure 6-93. Figure 6-95. 3. Remove the suction hose from the hydraulic gear pump and drain all the hydraulic fluid into an oil drain container. Figure 6-93. 1. Loosen the hose clamp securing the suction hose to hydraulic gear pump inlet using a 5/16" socket or a flat-blade screw driver. See Figure 6-94. 4.
Log Splitters 2.fm Page 66 Wednesday, February 20, 2002 1:35 PM 8. Cap the hydraulic pressure hose and position it out of the way. 9. Remove both hex nuts and lock washers securing the gear pump to the coupling shield using a 1/2" socket. See Figure 6-97. Figure 6-99. 12. Remove the 45 degree elbow from the gear pump using a 7/8" wrench. Figure 6-97. 10. Support the gear pump from below and remove the remaining rear hex bolt using a 1/2" socket. See Figure 6-98. 13.
Log Splitters 2.fm Page 67 Wednesday, February 20, 2002 1:35 PM 14. Remove the lower coupling half from the gear pump input shaft. See Figure 6-101. NOTE If the lower coupling half will not come off the input shaft easily, use a pickle fork between the rear coupling support bracket and the coupling. See Figure 6-101. Figure 6-102. 1. Remove both hex bolts that secure the gear pump assembly together using a 1/2" socket. 2. On a clean surface, slowly separate all sections of the gear pump. See Figure 6-103.
Log Splitters 2.fm Page 68 Wednesday, February 20, 2002 1:35 PM Figure 6-104. Figure 6-106. 3. Identify all the sections left to right (1 through 4), and Slowly separate and inspect them. See Figure 6-105. b. Section 4—Left inside face with components removed. See Figure 6-107. Figure 6-105. Figure 6-107. a. Section 4—Left inside face. See Figure 6-106.
Log Splitters 2.fm Page 69 Wednesday, February 20, 2002 1:35 PM c. Section 3—Right face with “O” ring. See Figure 6-108 d. Section 2—Left face. See Figure 6-111. Figure 6-111. Figure 6-108. e. Section 2—Left face with drive pinion gear, key, and input shaft. See Figure 6-112. 6 Figure 6-112. Figure 6-109. f. Figure 6-110. 6-69 Section 2—Left face with both pinion gears removed, key on table and retaining ring for check valve. See Figure 6-113.
Log Splitters 2.fm Page 70 Wednesday, February 20, 2002 1:35 PM Figure 6-115. Figure 6-113. g. Section 2—Left face with removed. See Figure 6-114. 4. Assemble in the Reverse Order Above, and perform the Flexible Coupler Adjustment section. components Flexible Coupler Adjustment IMPORTANT: The flexible coupling between the engine and the gear pump must be set to the proper tolerance or damage may occur. See Figure 6-116. Figure 6-114. h. Section 1—Right inside face. See Figure 6115. Figure 6-116. 1.
Log Splitters 2.fm Page 71 Wednesday, February 20, 2002 1:35 PM Figure 6-117. Figure 6-118. 2. Place the square key into the crankshaft keyway making certain it is flush with the end of the crankshaft. 8. Align the lower coupling half and nylon “spider” with the upper coupling half on the engine crank-shaft. 3. Tap the key into the key-way with a small hammer to make certain it is parallel with the crankshaft. 9. Raise the lower coupling half and spider up into the upper coupling half. 10. Place a .
Log Splitters 2.fm Page 72 Wednesday, February 20, 2002 1:35 PM Log Splitter Control Valve Removal Control Valve channel locks and a 1-1/16" wrench. See Figure 6-122. 4. Remove the steel hydraulic tube that connects from the rear port of the hydraulic cylinder to the 90 degree fitting on the control valve using two 7/8" wrenches. See Figures 6-123 and 6124. Figure 6-120. 1. Loosen the hose clamp securing the return hose to the control valve return elbow using a 5/16" socket or a flat-blade screw driver.
Log Splitters 2.fm Page 73 Wednesday, February 20, 2002 1:35 PM Figure 6-124. Figure 6-126. NOTE 5. Remove the 90 degree return elbow from the control valve using a 7/8" wrench and a large adjustable wrench. See Figure 6-125. Secure the front port with a 7/8" wrench to make certain damage does not occur to the front port. 7. Replace the control valve and install it in the reverse order above. See Figure 6-127. Figure 6-125. 6.
Log Splitters 2.fm Page 74 Wednesday, February 20, 2002 1:35 PM Log Splitter Hydraulic Cylinder Removal 5. Mark the control lever bracket and control valve body for orientation using a sharp object. 6. Remove the control lever bracket from the control valve body. 7. Remove the valve spool stop from the control valve body. See Figure 6-130. Figure 6-128. 1. Remove the cotter pin and clevis pin securing the control lever assembly to the control lever bracket using a pair of needle nose pliers.
Log Splitters 2.fm Page 75 Wednesday, February 20, 2002 1:35 PM 12. Grasp the control valve assembly and rotate it to the vertical position with the kickoff valve spool bracket end down. 13. Apply light pressure to the control valve housing until the kickoff valve spool comes free of the valve housing. 14. Remove the control valve spool from the control valve housing and set it vertically on the control lever end. See Figure 6-132. Figure 6-133.
Log Splitters 2.fm Page 76 Wednesday, February 20, 2002 1:35 PM 21. Inspect all components for damage or wear. See Figure 6-135. Figure 6-135. 1. Remove the hex cap plug from the top of the control valve body using a 5/8" wrench. See Figure 6-137. Figure 6-137. 22. Inspect the kickoff valve spool for damage or wear. See Figure 6-136. 2. Inspect the “O” ring on the hex cap plug to make certain it is not damaged. See Figure 6138. Figure 6-136. NOTE Figure 6-138.
Log Splitters 2.fm Page 77 Wednesday, February 20, 2002 1:35 PM control valve housing using a 7/32" allen wrench NOTE The valve seat is securely fastened to the bottom of the valve port. 7. Assemble in the reverse order above, and perform the Pressure Relief Valve Adjustment section. See Figure 6-140. Figure 6-139. 5. Remove the relief valve spring and steel ball from the control valve body using a small magnet. 6 NOTE Make certain the spring is installed cupped side towards the steel ball. 6.
Log Splitters 2.fm Page 78 Wednesday, February 20, 2002 1:35 PM Log Splitter Hydraulic Cylinder Removal IMPORTANT: Prior to performing this section, perform the Control Valve Removal section. 1. Remove all four hex cap screws and lock nuts securing the stripper sides to the hydraulic cylinder using a 9/16" socket and a 9/16" wrench. See Figure 6-141. Figure 6-143. NOTE Make certain the hydraulic cylinder is secure. 5. Remove the hydraulic cylinder and place it on a work bench. Figure 6-141. 2.
Log Splitters 2.fm Page 79 Wednesday, February 20, 2002 1:35 PM NOTE Tap the rod cap in uniformly around the perimeter. 7. Remove the large retaining ring from the cylinder by raising it up and pulling outward using a medium flat-blade screw driver. 8. Remove all the paint from the inlet portion of the cylinder using a soft emery cloth. See Figure 6-145. Figure 6-146. 6 Figure 6-145. 9. Lubricate the inlet portion of the hydraulic cylinder with the log splitters hydraulic fluid. 10.
Log Splitters 2.fm Page 80 Wednesday, February 20, 2002 1:35 PM NOTE The thin flat backup seal washer goes to the front, and the round “O” ring seal goes towards the rear of the end cap. See Figure 6-148. Figure 6-150. 15. Remove and replace all inner components of the rod end cap. See Figure 6-151. Figure 6-148. 13. Remove all the paint from the piston rod end. See Figure 6-149. Figure 6-151. NOTE Figure 6-149. NOTE Make certain the piston rod end does not become scored. 14.
Log Splitters 2.fm Page 81 Wednesday, February 20, 2002 1:35 PM NOTE Make certain during assembly, the hex nut is tightened and detented. 18. Remove the large hex nut securing the piston to the piston rod using a large adjustable wrench, vice and steel rod. 19. Remove the piston from the piston rod. 20 Remove and replace the inner piston seal. Figure 6-152. 21. Assemble the hydraulic cylinder in the reverse order above.
Log Splitters 2.
Glossary.fm Page 1 Tuesday, February 19, 2002 2:43 PM POWER EQUIPMENT DICTIONARY MOWER TERMS: CPSC Mandatory Blade Safety Standards: Since July 1, 1982, all manufacturers produce only mowers that comply with the Consumer Products Safety Commission mandatory requirements. Basically, the blade must stop (either with the engine continuing to run or stopping) within 3 seconds of the user releasing a handle-mounted control.
Glossary.fm Page 2 Tuesday, February 19, 2002 2:43 PM Convertible Mower: Converts from reat bagging to side discharge style mower. Gives the versatility of two mowers in one. If a mulching kit were available the mower would be a three-in-one ation. Changing forward/reverse direction without clutching. 4-Wheel Steering (All Wheel Steer): Provides maximum maneuverability by allowing all four wheels to turn while steering.
Glossary.fm Page 3 Tuesday, February 19, 2002 2:43 PM Clutch/Brake Pedal: Eliminates the need for two pedals. Synchronized clutch and brake on one pedal. Gear and Pinion Steering: A very smooth type steering where a gear on the end of the steering shaft meets another gear called a sector gear. Reduces steering effort compared with conventional steering. MISC. TERMS Bolo Tines: Provides better tine wear in hard or rocky soil. Steel tines are heat treated.
Glossary.fm Page 4 Tuesday, February 19, 2002 2:43 PM ENGINE TERMS Bushel: One bushel equals 8 gallons. Gasoline: We recommend regular unleaded gas. Do not leave gas in tank over the winter unless fuel stabilizer is used; start each season with fresh gas (don’t use fuel that is over 4 months old). DO NOT USE Gasohol that is more than 10% alcohol or methanol. Automatic Choke: Method of automatically priming the carburetor for surer starts.
Glossary.fm Page 5 Tuesday, February 19, 2002 2:43 PM TERMS FOR HYDROSTATIC TRANSMISSIONS: work. The larger the horsepower rating of an engine, the greater is its ability to handle the job. Solid State Ignition: Solid state circuitry eliminates points and condensers in conventional ignition systems, which become less efficient and wear out. A self-contained module eliminates moving parts. In addition, it creates a hotter spark for more dependable starting. Eliminates costly electrical tune-ups.
Glossary.fm Page 6 Tuesday, February 19, 2002 2:43 PM Hydraulic Motor: A device that converts hydraulic fluid power into mechanical force and motion by transfer of flow under pressure. Purging: The act of replacing air with fluid in a fluidpower system by forcing fluid into all of the components and allowing the air a path of escape. Hydraulic Pump: A device that converts mechanical forces and motion into hydraulic fluid power by producing flow.
