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SNOW THROWER

Models

 642E, 642F, 662E, 614E, 

644E, 664F, & 6A4E

OPERATOR’S MANUAL

Model 664 Shown

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

Warning: 

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, 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. 
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have 
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized 
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

PRINTED IN U.S.A.

FORM NO. 

770-10045F.fm

(6/2002)

Summary of Contents for 642E

Page 1: ...st 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 In the State of California the above is required by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark arrester for the muffler is...

Page 2: ...he model number and the serial number of the equipment in the space below ENGINE INFORMATION The engine manufacturer is responsible for all engine related issues with regards to performance power rating specifications warranty and service Please refer to the engine manufacturer s Owner s Operator s Manual packed separately with your unit for more information CALLING CUSTOMER SUPPORT Please do NOT ...

Page 3: ...eye shields during operation and while performing an adjustment or repair to protect your eyes Thrown objects which ricochet can cause serious injury to the eyes 3 Do not operate without wearing adequate winter outer garments Do not wear jewelry long scarves or other loose clothing which could become entangled in moving parts Wear footwear which will improve footing on slippery surfaces 4 Use a gr...

Page 4: ...ved by the manufacturer e g wheel weights tire chains cabs etc 20 If situations occur which are not covered in this manual use care and good judgment Contact your dealer or telephone 1 800 800 7310 for assistance and the name of your nearest servicing dealer MAINTENANCE AND STORAGE 1 Never tamper with safety devices Check their proper operation regularly Refer to the maintenance and adjustment sec...

Page 5: ...710 1880 2 Lock Washers 736 0119 4 Saddle 784 5599 2 B ATTACHING HANDLE PANEL Carriage Bolts 710 0262 4 Hex Patch Nuts 712 3068 4 Lock Washers 736 0119 4 C D ATTACHING CLUTCH CABLES AND SHIFT ROD Z Fitting 746 0778 2 Hex Nuts 712 0121 2 E ATTACHING CHUTE ASSEMBLY Hex Bolts 710 3015 2 Hex Lock Nuts 712 3027 6 Chute Flange Keepers 731 0851 3 Not Shown F ATTACHING CHUTE DIRECTIONAL CONTROL Flat Washe...

Page 6: ...acket to handle panel with two carriage bolts lock washers and hex patch nuts Be sure the bend in the grip bracket is towards the center of the handle panel Do not tighten at this time See Figure 2 Figure 2 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 ...

Page 7: ... Models 602 642 and 662 Rotate the shift arm assembly counter clockwise as far as it will go Insert the shift rod through the shift arm assembly When installed the shift arm assembly should point to the right Secure with flat washer and hairpin clip See Figure 7 Models 602 642 and 662 Thread the ferrule up or down the shift rod and align with the lower hole on the shift lever assembly behind the h...

Page 8: ...tion of the Z fitting until the rubber bumper located on the underside of the clutch lever only lightly contacts the upper handle IMPORTANT The cable should have very little slack but should NOT be tight An overtightened cable may prohibit the auger and drive from disengaging WARNING Over tightening the cable may prohibit the auger and drive from disengaging and compromise the safety of the snow t...

Page 9: ... bracket Place another flat washer on the end of the chute directional control and insert hairpin clip into hole in the end of control See Figure 12 Adjust the chute bracket so that the spiral on the chute directional control fully engages the teeth on the chute assembly Tighten nuts on the lower chute bracket securely Tighten hex nut on the eye bolt on chute directional control Figure 12 Lamp Wir...

Page 10: ...ontrol The traction control is located on the right handle Squeeze the traction control grip to engage the wheel drive Release to stop Chute Directional Control The chute directional control is located on left side of the snow thrower See Figure 14 To change the direction in which snow is thrown turn chute directional control as follows Crank clockwise to discharge to the left Crank counterclockwi...

Page 11: ...ke sure it snaps into place Do not turn key NOTE Engine will not start unless ignition key is inserted into ignition slot in carburetor cover Electric Starter If Equipped Determine that your house wiring is a three wire grounded system Ask a licensed electrician if you are not certain If your house wiring system is not a three wire grounded system do not use this electric starter under any conditi...

Page 12: ...RSE positions Select a speed appropriate for the snow conditions that exist Use the slower speeds until you are familiar with the operation of the snow thrower Squeeze the auger control grip and the augers will turn Release it and the augers will stop Squeeze traction control grip and the snow thrower will move Release it and drive motion will stop NEVER move shift lever without releasing drive cl...

Page 13: ...onditions On models so equipped drift cutters are assembled to the auger housing inverted Remove the carriage bolts by unthreading the hex nuts which secure them and reinstall the drift cutters in their proper position before operating the snow thrower See Figure 16 Figure 16 If your unit is not equipped with drift cutters contact Customer Support as instructed on page 2 for information regarding ...

Page 14: ... traction control cable and unthread the cable one turn If the wheels do not stop when you engage the traction control clutch grip loosen the jam nut on the traction control cable and thread the cable in one turn Recheck the adjustment and repeat as necessary Tighten the jam nut to secure the cable when correct adjustment is reached WARNING Drain the gasoline out of snow thrower engine place a pie...

Page 15: ...nts need to be made to the engine while the engine is running e g carburetor keep clear of all moving parts Be careful of muffler engine and other surrounding heated surfaces Adjusting Shift Rod Remove the hairpin clip and flat washer from the ferrule and remove the ferrule from the shift lever Place the shift lever in the fastest forward speed position Models 602 642 662 Push up on the shift arm ...

Page 16: ... hours of operation IMPORTANT Keep all grease and oil off the friction wheel and drive plate Wheels Oil or spray lubricant into bearings at wheels at least once a season Pull klick pin remove wheels clean and coat axles with a multipurpose automotive grease See Figure 21 Figure 21 Chute Directional Control The worm gear on the chute directional control should be greased with multipurpose automotiv...

Page 17: ... 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 IMPORTANT NEVER replace the auger shear bolts with standard hex bolts Any damage to the auger gearbox or other components as a result of doing so will NOT be covered by your snow thrower s warranty Belt Removal and ...

Page 18: ...h the snow thrower Remove the klick pins which secure the wheels and remove the wheels from the axle Using a wrench to hold the shaft loosen but do not completely remove the hex nut and bell washer on the left end of gear shaft See Figure 29 Figure 29 Lightly tap the hex nut to dislodge the ball bearing from the right side of the frame Remove the hex nut and bell washer from the left end of the sh...

Page 19: ...follows Remove gasoline from carburetor and fuel tank to prevent gum deposits from forming on these parts and causing possible malfunction of engine Run engine until fuel tank is empty and engine stops due to lack of fuel Drain carburetor by pressing upward on bowl drain located below the carburetor cover NOTE Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum dep...

Page 20: ...l Refer to the engine manual Loss of power Spark plug wire loose Gas cap vent hole plugged Exhaust port plugged Connect and tighten spark plug wire Remove ice and snow from cap Be certain vent hole is clear Clean following the engine manual Engine overheats Carburetor not adjusted properly Incorrect fuel mixture Refer to the engine manual packed with your unit or have carburetor adjusted by an aut...

Page 21: ...21 Notes ...

Page 22: ...s 642E 642F 662E 614E 644E 664F 6A4E 1 2 3 4 5 6 7 8 9 10 11 12 13 9 8 14 15 16 17 7 18 18 7 19 20 21 16 6 22 23 13 13 6 7 24 6 16 26 27 28 25 29 30 31 32 33 34 36 37 33 32 32 33 35 37 36 33 32 31 30 6 38 39 40 ...

Page 23: ...ing Assembly 684 0055C 30 Housing Assembly 22 736 0169 Lock Washer 3 8 23 712 0798 Hex Nut 3 8 16 24 784 5580 Slide Shoe 25 784 5581A 24 Shave Plate 784 5579A 26 Shave Plate 784 5582A 28 Shave Plate 784 5575 30 Shave Plate 26 684 0065 Impeller Assembly 27 715 0114 Pin 28 618 0120A 24 Gear Assembly 618 0121A 26 Gear Assembly 618 0122A 28 Gear Assembly 618 0160A 30 Gear Assembly 29 710 0604A Hex Was...

Page 24: ...642F 662E 614E 644E 664F 6A4E 1 2 3 4 5 7 8 9 11 15 16 16 17 18 18 19 19 20 20 21 22 23 54 25 26 27 28 29 30 24 53 23 34 35 23 36 38 54 39 40 41 39 42 43 44 45 46 17 47 29 48 49 50 51 52 14 13 7 37 10 12 24 6 7 55 55 ...

Page 25: ...0 Hex Cap Screw 5 16 18 x 75 37 736 0185 Flat Washer 38 731 0921 Upper Chute 39 736 0159 5 16 Washer 40 710 0451 Carriage Bolt 5 16 18 x 75 41 710 0276 Carriage Screw 5 16 18 x 1 0 42 720 0284 Knob 43 731 1300B Lower Chute 44 712 3027 Hex Lock Nut 1 4 20 45 731 0851A Flange Keeper 46 710 3015 Hex Cap Screw 1 4 20 x 75 47 629 0058 Round Light Harness 48 710 1652 Hex Tap Screw 1 4 20 x 625 49 710 10...

Page 26: ... 4 5 5 6 16 Wheels 13 or 15 Wheels 4 7 7 8 9 10 10 11 11 12 41 5 13 14 15 16 17 18 1 19 20 21 22 23 24 25 25 26 28 29 1 1 30 31 32 33 34 8 35 Drive Clutch Cable Auger Clutch Cable Auger Clutch Cable Blower Housing 36 20 37 38 39 40 27 42 42 42 43 44 45 46 ...

Page 27: ...684 0042C Friction Wheel Assembly 28 656 0012A Friction Disc Wheel 29 684 0013B Wheel Shift Rod Assembly 30 746 0897 Drive Cable 31 748 0190 Spacer 32 684 0021 Friction Wheel Bracket Assembly 33 732 0264 Extension Spring 34 712 0711 Jam Nut 3 8 24 35 746 0898B Drive Cable 36 738 0869 Axle 13 Wheels 738 0830 Axle 16 Wheels 37 790 00010 Friction Plate 38 735 0243B Friction Wheel Rubber 39 718 0301A ...

Page 28: ...Lock Jam Nut 3 8 16 16 756 0569 Pulley Half 17 736 0242 Bell Washer 18 736 0505 Flat Washer 19 736 0507 Washer 20 754 0430A Belt 21 756 0967 Auger Pulley 22 736 0247 Flat Washer 23 736 0331 Bell Washer 24 710 0696 Hex Cap Screw 3 8 24 25 748 0360 Pulley 26 710 0654A Hex Washer Screw 3 8 16 x 1 0 27 629 0071 Extension Cord OEM 390 986 Electric Start Kit REF NO PART NO DESCRIPTION 2 3 4 5 6 7 4 8 9 ...

Page 29: ...sher Screw 3 8 16 x 1 0 16 710 1245B Hex Lock Screw 5 16 24 x 875 17 736 0242 Bell Washer 340 ID x 872 OD 18 736 0505 Flat Washer 341 ID x 50 OD 19 756 0967 Pulley Auger 20 756 0569 Pulley Half 21 754 0430B V Belt 22 736 0247 Flat Washer 23 736 0331 Bell Washer 39 ID x 1 13 OD 24 710 0696 Hex Cap Screw 3 8 24 x 875 25 748 0360 Pulley Adapter 26 OEM 390 987 Electric Start REF NO PART NO DESCRIPTION...

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Page 32: ...ce items such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d MTD LLC does not extend any warranty for products sold or exported outside of the United States its posses sions and territories except those sold through MTD LLC s authorized channels of export distribution e P...

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