Operator’s Manual Snow Thrower Models 614E, 644E, 664G Model 664 Shown IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
TABLE OF CONTENTS Content Page Important Safe Operation Practices ...................................................................3 Hardware Pack...................................................................................................5 Assembling Your Snow Thrower ........................................................................6 Know Your Snow Thrower..................................................................................11 Operating Your Snow Thrower........................
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES This symbol points out important safety instructions, which if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol—heed its warning.
5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. MAINTENANCE AND STORAGE Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Do not operate machine while under the influence of alcohol or drugs. Muffler and engine become hot and can cause a burn. Do not touch. Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic.
SECTION 2: CONTENTS OF HARDWARE PACK (Boxed Units) Lay out the hardware according to the illustration below for identification purposes. Part numbers are shown in parentheses. (Hardware pack may contain extra items which are not used on your unit.
SECTION 3: ASSEMBLING YOUR SNOW THROWER NOTE: References to right or left side of the snow Handle Panel thrower are determined from behind the unit in the operating position. The “operator’s position” is defined as standing directly behind the snow thrower, facing the handle panel. Auger Control NOTE: This Operator’s Manual covers several models. Snow thrower features vary by model. Not all features discussed in this manual are applicable to all snow thrower models.
• • Remove the lower two plastic wing knobs, cupped washers and carriage bolt (eyebolt on the left side) from the lower handle. See Figure 3. • • Thread the jam nuts all the way up each of the “Z” fittings, toward the handle panel. See Figure 11. Make certain all cables are in the grooves of the cable roller guides located in the lower rear of the unit, one on each side. See Figure 9.
• • • Insert curved end of the Z fitting into the top hole in the triangular metal tab on the auger control grip. The triangular metal tab on the auger control grip must face the center of the handle panel. See Figure 6. • • Triangle Metal Tab Auger Control • Repeat process for the right side Traction Control. Lay handle assembly behind snow thrower. See Figure 8. Insert a hex bolt 3/4” long and lock washer through the lower hole on the bottom of the handle.
• • Thread the ferrule onto the shift rod, up or down the shift rod and align with the far hole on the narrow side of the shift lever assembly behind the handle panel. See Figure 10. Flat Washer Auger Drive Clutch • Traction Drive Clutch Shift Lever Ferrule Make certain all cables are in the grooves of the cable roller guides in the lower rear of the unit, one on each side. Refer to Figure 9.
Attaching The Chute Directional Control (Hardware C) • Thread one hex nut about halfway onto eye bolt on the chute directional control. • Insert eye bolt through the hole provided in the left handle. See Figure 13. • Secure with cupped washer (cupped side against the handle) and other hex nut. Do not tighten until after attaching the other end of the chute directional control.
If your unit is not equipped with a lamp, contact Customer Support as instructed on page 2 for information regarding price and availability. Snow Thrower Model Electric Light Kit 664G OEM-390-255 NOTE: The engines found on snow thrower models 614E and S644E are NOT equipped with an alternator and therefore can NOT accept a light kit.
• • Safety Ignition Key Crank clockwise to discharge to the left. Crank counterclockwise to discharge to the right. The safety ignition key must be fully inserted in the switch before the unit will start. Remove the ignition key when the snow thrower is not in use. See Figure 16. Clean-Out Tool WARNING: Never use your hand to clear a clogged discharged chute. Shut off engine and remain behind handles until all moving parts have stopped before unclogging.
To Stop Engine WARNING: The optional electric starter is equipped with a grounded three-wire power cord and plug, and is designed to operate on 120 volt AC household current. It must be used with a properly grounded three-prong receptacle at all times to avoid the possibility of electric shock. Follow all instructions carefully prior to operating the electric starter.
Check the adjustment of the auger control as follows: WARNING: Never use your hands to clean • snow and ice from the discharge chute or auger housing • • • • • When the auger control is released and in the disengaged “up” position, the cable should have very little slack. It should NOT be tight. In a well-ventilated area, start the snow thrower engine as instructed earlier in this section under the heading Starting Engine. Make sure the throttle is set in the FAST position.
WARNING: The muffler, engine, and their • surrounding areas become hot and can cause a burn. Do not touch. • Discharge snow downwind whenever possible. Slightly overlap each previous swath. • Set the skid shoes 1/4” below the scraper bar for normal usage. The skid shoes may be adjusted upward for hard-packed snow. Adjust downward when using on gravel or crushed rock. Avoid possible starter freeze-up. Clean the snow thrower thoroughly after each use.
• • With the traction control is engaged, the friction wheel must contact the drive plate. See Figure 20. Use a middle or lower position when the area to be cleared is uneven. Friction Wheel Gear Shaft Carriage Bolts Drive Plate Hex Nuts Gap Skid Shoes Figure 21 Figure 20 WARNING: Do not operate this snow If adjustment is necessary: • • • thrower on gravel as loose gravel can be easily picked up and thrown by the auger causing injury to the operator and/or damage to the snow thrower.
One Wheel Driving NOTE: Make certain to check for correct adjustment of the shift rod as instructed in the Final Adjustments section before operating the snow thrower. • Drive Wheels • On the right side of the unit, place click pin in the outside axle hole only. Do not place pin through wheel hub.This position gives power drive to the left wheel only, making the unit easier to maneuver. Both Wheels Driving The wheels may be adjusted for two different methods of operation.
Auger Shaft • Chain At least once a season, remove shear bolts on auger shaft. Oil or spray lubricant inside shaft and lubricate the auger bearings. See Figure 24. Shift Lever Vent Plug Avoid oil on friction wheel and drive plate Gear Shaft Plastic Bearing Shear Bolts Plastic Bearing Figure 24 Figure 25 Drive and Shifting Mechanism Gear Case Remove rear cover. Oil any chains, sprockets, gears, bearings, shafts, and shifting mechanism at least once a season. Use engine oil or a spray lubricant.
Augers • • • The augers are secured to the spiral shaft with two shear bolts and hex lock nuts. If you hit a hard foreign object or ice jam, the snow thrower is designed so that the bolts may shear. Refer to Figure 24. If the augers will not turn, check to see if the bolts have sheared. Replacement shear bolts and hex lock nuts have been provided with the snow thrower. When replacing bolts, spray an oil lubricant into shaft before inserting new bolts.
Drive Belt • • • • • Follow first four steps of previous instructions. Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 28. Using a wrench, loosen the nut on the stop bolt until the support bracket rests on the auger pulley. See Figure 30. Slip belt between friction wheel and friction wheel disc. Remove and replace belt. Reassemble in reverse order. • • • • NOTE: The support bracket must rest on the stop bolt after the new belt has been assembled. See Figure 30.
• • • Remove spark plug and pour one ounce of engine oil through spark plug hole into cylinder. Cover spark plug hole with rag. Crank engine several times to distribute oil. Replace spark plug. • Follow the lubrication recommendations found in the Maintenance Section. • Always store the snow thrower in a clean, dry area. When storing any type of power equipment in an unventilated or metal storage shed, care should be taken to rust proof the equipment.
SECTION 10: MODELS 614E, 644E, & 664G 40 8 7 6 5 10 38 39 11 12 21 14 3 7 13 20 8 15 18 6 16 4 2 1 29 30 31 32 7 34 13 18 19 22 23 37 26 33 24 13 33 6 28 36 16 27 37 32 6 7 33 25 33 31 32 30 6 35 36 32 22 17 16
Models 614E, 644E, & 664G REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. PART NO. 712-0116 756-0178 784-5632B 710-0459A 741-0475 736-0242 712-3010 712-3027 705-5226 731-1379C 710-0703 710-0451 738-0281 736-0167 712-3010 732-0611 736-0119 05931A 741-0309 684-0039D 684-0041D 736-0169 REF. PART NO. NO. 23. 712-0798 24. 784-5580 25. 784-5581A 784-5582A 26. 684-0065 27. 715-0114 28. 618-0120A 618-0122A 29. 710-0726 30. 784-5618 31. 741-0245 32. 736-0188 33. 741-0493A 34.
Models 614E, 644E, & 664G 17 16 18 17 2 3 1 8 16 20 4 5 19 22 27 26 20 55 25 18 53 9 19 28 54 56 10 21 7 12 29 30 13 38 39 54 15 24 24 53 40 55 14 6 7 41 39 34 23 42 35 7 43 23 22* 37 44 16 36 45 27* 64† 46 65† 57† 47†† 60† 59† 42 62† 51†† 50†† 48†† 63† 58† 23 49†† 61† 52†† 36 24 †Models w/Folding Handles *Ref. Nos. 22 and 27 reversed for fold down handles.
Models 614E, 644E, & 664G REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. PART NO.
Models 614E, 644E, & 664G 20 39 46 Drive Clutch Cable 42 37 5 13 7 1 11 38 6 10 40 Auger Clutch Cable 4 3 4 1 2 27 14 26 15 5 36 16 42 16” Wheels 42 13” or 15” Wheels 7 9 10 11 12 47 31 43 25 28 23 17 18 24 32 8 4 1 22 33 8 5 29 34 41 20 21 44 19 35 45 Blower Housing 30 41 26 41 Auger Clutch Cable
Models 614E, 644E, & 664G REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. PART NO.
Models 614E 1 2 3 5 4 8 9 13 16 22 11 12 10 15 20 16 4 7 6 23 24 18 17 14 19 25 26 21 IMPORTANT: For a proper working machine, use Factory Approved Parts. V-BELTS are specially designed to engage and disengage safely. A substitute (non OEM) V-Belt can be dangerous by not disengaging completely. REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. PART NO.
Models 644E & 664G 1 2 26 4 3 5 8 9 10 27 21 20 12 11 20 21 5 20 7 6 22 23 14 24 13 16 25 17 18 19 15 19 IMPORTANT: For a proper working machine, use Factory Approved Parts. V-BELTS are specially designed to engage and disengage safely. A substitute (non OEM) V-Belt can be dangerous by not disengaging completely. REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. PART NO.
Models 614E, 644E, & 664G 4 17 11 9 13 16 7 15 1 10 14 5 6 3 8 12 3 2 REF. NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. PART NO. 618-0123 618-0124 710-0642 711-0908A 711-0910A 714-0161 715-0143 717-0526 717-0528 718-0186 REF. NO. 10. 11. 12. 13. 14. 15. 16. 17. DESCRIPTION Housing—R.H. Housing—L.H. Hex Screw 1/4-20 x.75 Spiral Axle 24" Spiral Axle 28" Key Spiral Pin Worm Shaft Worm Gear Thrust Collar PART NO.
NOTES 31
MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. d. MTD LLC warrants this product against defects for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.
