background image

Two-Stage Snow Thrower

Styles H & K

Operator’s Manual

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 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.

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

PRINTED IN U.S.A.

FORM NO.  769-01276A.fm

(7/20/2004)

Summary of Contents for 31AE6KKH731

Page 1: ...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 c...

Page 2: ...nce of this unit you can seek help from the experts Choose from the options below Visit mtdproducts com for many useful suggestions Click on Customer Support button and you will get the four options reproduced here Click on the appropriate button and help is immediately available To reach a Customer Support Representative please call 1 800 800 7310 The engine manufacturer is responsible for all en...

Page 3: ...ts which could be tripped over or thrown by the auger impeller 2 Always wear safety glasses or 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 ent...

Page 4: ...s or inspections 18 Never put your hand in the discharge or collector openings Always use the clean out tool provided to unclog the discharge opening Do not unclog chute assembly while engine is running Shut off engine and remain behind handles until all moving parts have stopped before unclogging 19 Use only attachments and accessories approved by the manufacturer e g wheel weights tire chains ca...

Page 5: ...s Engine Modification EM and Three Way Catalyst TWC if so equipped SAFETY LABELS FOUND ON YOUR SNOW THROWER DANGER NEVER PUT HAND IN CHUTE CONTACT WITH ROTATING PARTS CAN AMPUTATE FINGERS AND HANDS SHUT OFF ENGINE AND WAIT UNTIL ALL MOVING PARTS HAVE STOPPED BEFORE UNCLOGGING USE CLEAN OUT TOOL OR WOODEN STICK TO UNCLOG DISCHARGE CHUTE KEEP AWAY FROM ROTATING IMPELLER AND AUGER CONTACT WITH IMPELL...

Page 6: ...e information CAUTION Prior to operating your snow thrower refer to Auger Control Test on page 11 Read and follow all instructions carefully and perform all adjustments to verify your snow thrower is operating safely and properly Securing the Handle 1 Observe the lower rear area of the snow thrower to be sure both cables are aligned with roller guides before pivoting the handle upward 2 Secure the...

Page 7: ... into the lower bracket and secure with the flat washer and hairpin clip just removed NOTE If necessary the lower bracket can be adjusted Refer to Chute Bracket Adjustment on Page 14 4 If equipped slip the cables running from the handle panel to the chute assembly into the cable guide located on top of the engine CAUTION Prior to operating your snow thrower refer to Auger Control Test on page 11 R...

Page 8: ...hread the gas cap to add gasoline to the fuel tank Choke Control The choke control is found on the rear of the engine and is activated by rotating the knob clockwise Activating the choke control closes the choke plate on the carburetor and aids in starting the engine Throttle Control The throttle control is located on the engine It regulates the speed of the engine and will shut off the engine whe...

Page 9: ... key in an attempt to start the engine Doing so may cause it to break Clean Out Tool WARNING Never use your hands to clear a clogged chute Shut off engine and remain behind handles until all moving parts have stopped before unclogging Use the clean out tool or a stick to unclog The clean out tool is fastened to the top of the auger housing with a mounting clip The tool is designed to clear a clogg...

Page 10: ...o avoid the possibility of electric shock Follow all instructions carefully prior to operating the electric starter WARNING If your home electrical system is grounded but a three hole receptacle is not available do not use your snow thrower s electric starter If you have a grounded three prong receptacle proceed as follows Plug the extension cord into the outlet located on the engine s surface Plu...

Page 11: ...or two reverse R positions Select a speed appropriate for the snow conditions and a pace you re comfortable with IMPORTANT Use the slower speeds until you are comfortable and familiar with the operation of the snow thrower Squeeze the drive control against the handle the snow thrower will move Release it and drive motion will stop IMPORTANT NEVER reposition the shift lever change speeds or directi...

Page 12: ...o the mounting clip on the rear of the auger housing and restart the engine While standing in the operator s position behind the snow thrower engage the auger control for a few seconds to clear any remaining snow and ice from the chute assembly Drift Cutters on models so equipped Drift cutters should be used when operating the snow thrower in heavy drift conditions On models so equipped drift cutt...

Page 13: ...ssure to between 15 psi and 20 psi NOTE If the tire pressure is not equal in both tires the unit may pull to one side or the other Chute Assembly The distance snow is thrown can be adjusted by changing the angle of the chute assembly To do so stop the engine by removing the ignition key and loosen the plastic wing knob found on the left side of the chute assembly Pivot the chute upward or downward...

Page 14: ... verify proper adjustment has been achieved Auger Control Refer to Auger Control Test on Page 11 to adjust the auger control Skid Shoes style varies by model The space between the skid shoes and the ground can be adjusted See Figure 6 For close snow removal on a smooth surface raise skid shoes higher on the auger housing Use a middle or lower position when the area to be cleared is uneven such as ...

Page 15: ...ultipurpose automotive grease Auger Shaft At least once a season remove the shear pins on auger shaft Spray lubricant inside shaft around the spacers Also lubricate the flange bearings found at either end of the shaft See Figure 9 Figure 9 Gear Case The auger gear case has been filled with grease at the factory If disassembled for any reason lubricate with two ounces of grease Part Number 737 0168...

Page 16: ...frame cover from the underside of the snow thrower by removing four self tapping screws which secure it 3 Roll the auger belt off the engine pulley 4 Unhook the support bracket spring from the frame Loosen and remove the shoulder screw which acts as a belt keeper Remove the belt from around the auger pulley and slip the belt between the support bracket and the auger pulley Reassemble auger belt by...

Page 17: ... so that it rests on the auger housing 2 Remove the frame cover from the underside of the snow thrower by removing four self tapping screws which secure it 3 a Grasp the idler pulley and pivot it toward the right b Insert a screw driver through aligning holes in both the idler bracket and the engine c Roll the auger belt off the engine pulley d Lift the drive belt off engine pulley 4 Slip the driv...

Page 18: ...rame and lightly tap the shaft s end to dislodge the ball bearing from the right side of the frame 2 a Slide the hex shaft downward and to the left while carefully un meshing the lower gears on the hex shaft from the upper gears on the wheel axle b Set the hex shaft s gears aside c Carefully remove the inner E ring from the hex shaft and slide the friction wheel assembly off the hex shaft NOTE If ...

Page 19: ...tion prior to draining fuel Fuel left in engine for extended period deteriorates and will cause serious starting problems If unit is to be stored over 30 days prepare for storage as 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 f...

Page 20: ...ill with fresh fuel Refer to the Tecumseh 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 Refer to the Tecumseh engine manual packed with your unit or have carburetor adjus...

Page 21: ...21 NOTES ...

Page 22: ...28 66 35 40 5 30 21 10 7 22 13 18a 18b 16 56 58 57 55 26 4 24 6 41 15a 15b 54 2 49 53 52 51 14 64 60 65 61 62 63 50 36 43 44 45 42 37 38 46 11 31 32 14 33 23 29 27 12 34 39 59 20 47 17 19 SECTION 9 PARTS LIST K Style Shown ...

Page 23: ...ulder 437 x 1 345 1 4 20 29 738 04125 Screw Shoulder 374 Dia x 1 05 30 746 0778 Z Fitting Cable 31 747 04284 Rod Shift 312 x 9 0 Upper 32 750 04314 Connector Sleeve Shift Rod 33 790 00130 Lever Shift 34 790 00140 Bracket Panel 35 710 0449 Screw Carriage 5 16 18 2 25 Gr5 36 710 0726 Screw 5 16 12 0 750 37 720 0284 Wing Knob 5 16 18 38 736 0451 Washer Saddle 320 x 93 x 060 39 749 04138 Handle Lower ...

Page 24: ...50 10 21 20 46 46 47 52 62 64 66 63 65 59 48 41 60 7 51 4 2 9 43 39 11 8 6 5 13 16 8 37 26 28 29 22 70 6 24 12 7 15 19 25 34 14 23 3 9 17 33 67 32 27 30 For Manual Chute For Remote Chute 32 31 38 1 36 68 69 7 7 4 7 35b 35a 9 18 Styles H K ...

Page 25: ...w 1 4 15 x 0 75 32 736 0159 Flat Washer 349 x 879 x 063 33 784 5647 Chute Directional Control Bracket 34 746 0897 Auger Clutch Cable 44 75 35a 784 5580 Shoe Slide Standard 35b 790 00091 Shoe Slide Deluxe 36 629 0071 Extension Cord 3 Prong 37 731 04426A Upper Chute Manual 731 04427A Upper Chute Remote 38 731 1313C Cable Guide Chute Tilt 39 731 2635 Mount Clean Out Tool 40 784 5594 Cable Bracket Cab...

Page 26: ... 56 58 7 52 7 46 49 59 44 43 54 50 17 41 55 58 67 68 42 36 32 35 34 9 28 19 18 30 20 24 7 29 13 33 23 11 5 22 3 24 15 21 24 6 1 16 12 14 2 14 10 4 38 9 9 28 31 9 37 8 20 7 26 27 39 9 4 62 64 60 65 61 63 25 45 9 Styles H K ...

Page 27: ...38 0924 Screw 1 4 28 x 375 29 741 0563 Bearing Ball 17 x 40 x 12 30 741 0245 Bearing Hex Flange x 75 ID 31 746 0897 Cable Auger 44 75 32 746 04086 Cable Drive 41 75 33 748 0190 Spacer 508 ID x 75 OD x 68 34 756 0625 Roller Cable 35 784 5687A Guide Bracket Auger Cable 36 790 00072 Frame 37 790 00096 Guide Bracket Front Auger Cable 38 790 00054 Cover Frame 39 790 00055 Roller Bracket Drive Cable 40 ...

Page 28: ...djustments and normal deterioration of the exterior finish due to use or exposure d Service completed by someone other than an authorized service dealer e MTD does not extend any warranty for products sold or exported outside of the United States its possessions and territories except those sold through MTD s authorized channels of export distribution f Replacement parts that are not genuine MTD p...

Reviews: