Operator’s Manual Model E663G IMPORTANT: Read safety rules and instructions carefully before operating equipment. 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 Loose Parts........................................................................................................ 5 Assembling Your Snow Thrower........................................................................ 5 Know Your Snow Thrower ................................................................................. 7 Operating Your Snow Thrower....................
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES This Warning 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 your snow thrower. Failure to comply with these instructions may result in personal injury. When you see this symbol, heed its warning.
• • • • • • • • • • Use only attachments and accessories approved by the manufacturer of snow thrower (such as tire chains, cabs, etc.). Never operate the snow thrower without good visibility or light. Always be sure of your footing and keep a firm hold on the handles. Walk, never run. Muffler and engine become hot and can cause a burn. Do not touch. MAINTENANCE AND STORAGE • • • • Check shear bolts, engine mounting bolts, etc.
SECTION 2: LOOSE PARTS The snow thrower is shipped with following loose parts in the carton. Please remove all loose parts from the carton before discarding it. See Figure 1 to identify the parts noting that these parts may be referred to again in the following sections of this manual. Part numbers are shown in parentheses. Shear Bolts (710-0890A) Hex Lock Nuts (712-0429) AUGER SHEAR BOLTS The augers are secured to the auger shaft with two shear bolts and hex lock nuts.
NOTE: If the connector is not properly assembled, the shift rod will pivot and you will not be able to change speeds or change directions. • Unwrap the headlight wire which is attached to the headlight, beneath the handle panel. Wind the headlight wire around the right handle until excess slack is removed. • Plug the wire from the headlight into the wire lead coming from the right side of the engine, beneath the fuel tank. Use middle or high position when area to be cleared is uneven. See Figure 5.
b. Engage the traction control, and attempt to move them machine both forward and rearward. You should experience resistance as the wheels should not be turning. • Move the shift lever into the fast reverse (R2) position and repeat the previous steps (a & b).
Fuel Shut-off Valve The fuel shut-off valve, located under fuel tank, controls fuel flow from the tank. Always make certain it is in the Open (vertical) position before attempting to start the engine. Closed Primer Choke Open Throttle Control The throttle control is located on the engine. It regulates the speed of the engine. Safety Ignition Key Ignition Key The safety ignition key must be fully inserted in the switch before the unit will start. Remove the ignition key when snow thrower is not in use.
• • • Electric Start: Do NOT prime engine. Push starter button on top of the engine to crank the engine. When engine starts, release starter button. Recoil Start: Grasp starter handle (see Figure 7) and pull rope out slowly, until it pulls slightly harder. Let rope rewind slowly. Pull starter handle rapidly. Do not allow handle to snap back. Allow it to rewind slowly while keeping a firm hold on the starter handle. As engine warms up and begins to operate evenly, rotate choke knob slowly to OFF position.
SECTION 6: MAKING ADJUSTMENTS • WARNING: NEVER attempt to clean chute or make any adjustments while engine is running. Adjust the support bracket inward or outward so that the spiral is fully engaged in the notches on the chute before retightening the hex nuts. Chute Assembly Adjustment Auger Control Adjustment The distance snow is thrown can be adjusted by adjusting the angle of the chute assembly. The sharper the angle, the shorter the distance snow is thrown.
• If adjustment is necessary: • • • Loosen the jam nut on the traction drive cable and thread the cable in or out as necessary. Retighten the jam nut to secure the cable when correct adjustment is reached. Reassemble the frame cover. IMPORTANT: Make certain to check for correct adjustment of the shift rod as instructed under the heading Final Adjustments in Section 3 of this manual, before operating the snow thrower.
SECTION 7: MAINTAINING YOUR SNOW THROWER Lubrication Auger Shaft • WARNING: Disconnect the spark plug wire and ground against the engine before performing any maintenance procedures. Engine At least once a season, remove the shear bolts on the auger shaft. Oil or spray lubricant inside and on the plastic bearings on the shaft. See Figure 14. Shear Bolts Refer to the separate engine manual packed with your unit for all engine lubrication instructions.
SECTION 8: SERVICE • WARNING: Disconnect the spark plug wire and ground against the engine before performing any repairs or maintenance. Unhook the idler spring from the hex bolt on the auger housing. See Figure 18. Friction Wheel Engine Refer to the separate engine manual packed with your unit for all engine related maintenance procedures. Belt Removal And Replacement Frame Support Bracket WARNING: Disconnect the spark plug wire from the spark plug and ground.
Drive Belt • • • • • Screws Follow the first four steps of the instructions for servicing the auger belts. Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 17. Back out the stop bolt until the support bracket rests on the auger pulley. See Figure 19. Slip belt between friction wheel and friction wheel disc. See Figure 19. Remove and replace belt. Reassemble following the instructions in reverse order.
SECTION 9: OFF-SEASON STORAGE WARNING: Never store engine with fuel in tank indoors or in poorly ventilated areas, where fuel fumes may reach an open flame, spark or pilot light as on a furnace, water heater, clothes dryer or other gas appliance. • • • • Follow the lubrication recommendations found in Section 7 of this manual. Always store the snow thrower in a clean, dry area.
SECTION 10: TROUBLESHOOTING Problem Engine fails to start Cause 1. Fuel tank empty, or stale fuel. 2. 3. 4. 5. 6. 7. 8. Engine runs erratic Remedy 1. Fill tank with clean, fresh gasoline. Fuel becomes stale after thirty days unless a fuel stabilizer is used. Blocked fuel line. 2. Clean the fuel line. Choke not in ON position 3. Move switch to ON position Faulty spark plug. 4. Clean, adjust gap or replace. Safety key not in ignition switch on engine. 5. Insert the key fully into the switch.
SECTION 11: PARTS LIST Model 663 4 17 11 9 16 13 8 15 1 10 14 5 6 3 7 12 2 Ref. No. Part No. 3 Part Description 1. 618-0123 2. 618-0124 LH Housing 3. 710-0642 Self Tapping Screw, 1/4-20 x .75 4. 711-0910 Spiral Axle, 28” 5. 714-0161 Hi-Pro Key, 3/16 x 5/8 6. 715-0143 Spring Spirol Pin, .25 x 1.25 7. 717-0528 Worm Gear, 20-tooth 8. 717-0526 Worm Shaft 9. 718-0186 Thrust Collar 10. 721-0325 Grease Plug 11. 721-0327 Grease Seal 12. 736-0351 Flat Washer, .76 x 1.
Model 663 20 27 37 Drive Clutch Cable 39 20 5 13 7 38 37 11 Auger Clutch Cable 4 10 1 6 3 40 4 1 2 14 26 36 15 5 16 25 10 11 7 31 25 28 12 23 17 21 18 32 8 9 24 4 1 22 33 1 20 29 8 5 34 19 Auger Clutch Cable 26 35 Blower Housing 30 1 1 45 44 42 42 41 43 18
Model 663 Ref. No. Part No. Ref. No. Part Description Part No. Part Description 1. 710-1652 Hex Screw 24. 717-1444 7-Tooth Shaft 2. 784-5688 Drive Cable Guide Bracket 25. 715-0249 Roll Pin 3. 784-5687 Auger Clutch Cable Bracket 26. 714-0143 Clik Pin 4. 756-0625 Roller Cable 27. 684-0042B Friction Wheel Assembly 5. 738-0924 Hex Screw 1/4-28 28. 656-0012A Friction Disc Wheel 6. 684-0030 Frame Assembly 29. 684-0013B Wheel Shift Rod Assembly 7.
Model 663 2 3 1 4 5 11 10 9 15 18 14 12 7 8 13 32 6 9 18 31 19 20 16 22 23 27 21 10 13 30 34 28 25 23 13 38 26 35 30 22 18 32 33 31 16 41 37 36 17 39 40 24 40 42 39 29 20
Model 663 Ref. No. Part No. Ref. No. Part Description Part No. Part Description 1. 712-0116 Lock Jam Nut 3/8-24 23. 736-0463 2. 756-0178 Flat Idler 24. 784-5618 Bearing Housing 3. 784-5632A Auger Idler Arm 25. 710-0703 Carriage Screw 1/4-20 x .75 4. 710-0459A Hex Cap Screw 3/8-24 x 1.50 26. 710-0604 Hex Washer Screw 5/16-18 5. 738-0281 Shoulder Screw 27. 736-0169 Lock Washer 3/8 6. 736-0174 Wave Washer 28. 712-0798 Hex Nut 3/8-16 7. 732-0611 Extension Spring 29.
Model 663 1 2 27 3 5 4 8 9 26 12 11 10 16 15 19 16 4 16 7 6 21 22 13 14 17 18 23 20 24 22 25
Model 663 Ref. No. Part No. Part Description 1. 710-0599 Hex Washer Screw 1/4-20 x .50 2. 731-1324 Belt Cover 3. 732-0710 Extension Spring 4. 710-0627 Hex Screw 5/16-24 x .75 5. 710-3005 Hex Cap Screw 3/8-16 x 1.25 6. 05896A Drive Clutch Idler Bracket 7. 748-0234 Shoulder Spacer 8. 756-0987 Pulley Half 9. 754-0346 V-Belt 10. 756-0986 Pulley Half 11. 736-0270 Bell Washer 12. 710-0230 Hex Cap Screw 1/4-28 x .50 13. 756-0313 Flat Idler 14.
Model 663 67 70 64 10 35 13 44 32 32 38 68 19 45 46 33 49 11 63 45 32 35 51 41 42 65 50 39 36 48 43 4 30 41 ground wire 66 (for of light ass’y) 18 34 27 47 63 39 40 31 37 43 42 11 20 12 5 44 69 11 9 23 29 15 28 21 60 24 55 6 16 25 1 26 61 22 52 20 12 18 58 61 15 7 20 11 56 15 2 17 12 57 8 24 3 14
Model 663 Ref. No. Part No. Ref. No. Part Description Part No. Part Description 1. 684-0008A Shift Arm Assembly 36. 732-0145 Compression Spring, .36 x 1.0 2. 684-0022 Chute Crank Ass’y 37. 732-0193 Comp. Spring, .39 x .6 x .88 3. 715-0138 Rolled Pin 38. 732-0746 Torsion Spring, .44 x .8 4. 710-0262 Carriage Bolt, 5/16-18 x 1.5 39. 735-0199A Rubber Bumper 5. 710-0449 Carriage Bolt, 5/16-18 x 2.25 40. 736-0105 Bell Washer, .401 x .87 x .063 6.
MANUFACTURER’S LIMITED WARRANTY The limited warranty set forth below is given by MTD PRODUCTS INC (“MTD”) with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD warrants this product against defects in material and workmanship 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 material or workmanship.
