MTD 737-0168 Operator'S Manual Download | Manualshive

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SECTION 8: TROUBLE SHOOTING GUIDE

NOTE:

For repairs beyond the minor adjustments above, contact your local authorized service dealer.

Trouble

Possible Cause(s)

Corrective Action

Engine fails to start

Fuel tank empty, or stale fuel.

Blocked fuel line.
Choke control not in ON position
Faulty spark plug.
Ignition key not present.
Spark plug wire disconnected.
Engine not primed.

Fill tank with clean, fresh gasoline. Fuel will not last over thirty days
unless a fuel stabilizer is used.
Clean fuel line.
Move choke control to ON position
Clean, adjust gap or replace.
Insert key into ignition switch.
Connect spark plug wire.
Refer to the

Tecumseh

engine manual or

Starting the Engine

on page

10 of this manual for instructions on the engine primer.

Engine runs erratic

Unit running on CHOKE.
Blocked fuel line or stale fuel.

Water or dirt in fuel system.
Carburetor out of adjustment.

Move choke control to OFF position.
Clean fuel line; fill tank with clean fresh gasoline. Fuel will not last
over thirty days unless a fuel stabilizer is used.
Drain fuel tank. Refill 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 adjusted by an authorized service dealer.

Excessive vibration

Loose parts or damaged auger.

Stop engine immediately and disconnect spark plug wire. Tighten
all bolts and nuts. Make all necessary repairs. If vibration
continues, have unit serviced by an authorized service dealer.

Unit fails to propel itself Incorrect adjustment of drive

control cable.
Drive belt loose or damaged.

Adjust drive control cable.

Replace drive belt.

Unit fails to
discharge snow

Chute assembly clogged.

Foreign object lodged in auger.
Incorrect adjustment of auger
control cable.
Drive belt loose or damaged.

Stop engine immediately. Clean chute assembly and inside of
auger housing with chute clean-out tool
Stop engine immediately. Remove object from auger.
Adjust auger control cable.

Replace drive belt.

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Summary of Contents for 737-0168

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: ...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 engine...

Page 3: ...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 entang...

Page 4: ...stments 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 cha...

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: ...cluded with this manual Refer to Augers on page 19 for more information regarding shear pin replacement 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...

Page 7: ...o 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 13 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 Tire ...

Page 8: ... the faster Gas Cap Unthread 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 ...

Page 9: ...ore unclogging The chute clean out tool is fastened to the top of the auger housing with a mounting clip The tool is designed to clear a clogged chute assembly Refer to Operating Your Snow Thrower section for more detailed information regarding the chute clean out tool NOTE This item is fastened with a cable tie to the rear of the auger housing at the factory Cut the cable tie before operating the...

Page 10: ...eceptacle at all times to 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 ...

Page 11: ... six forward F positions 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...

Page 12: ...r 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 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 operatin...

Page 13: ...e Figure 3 Retighten the hex jam nut and repeat all three tests to verify proper adjustment has been achieved Skid Shoes The space between the skid shoes and the ground can be adjusted See Figure 4 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 a gravel driveway CAUTION Loose grave...

Page 14: ...er Control Refer to Auger Control Test on Page 11 to adjust the auger control 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 before re tightening the wing knob See Figure 6 Figu...

Page 15: ...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 8 Figure 8 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 IMPORTANT Do not overfill the gear case Dama...

Page 16: ...orward 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 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 sup...

Page 17: ...he gas cap Carefully pivot the snow thrower up and forward 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 pull...

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: ... stabilizer is used Drain fuel tank Refill 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 ...

Page 21: ...21 NOTES ...

Page 22: ...22 42 43 44 3 41 4 20 39 37 28 6 13 17 8 40 1 2 20 14 10 38 25 32 31 33 27 26 8 30 35 36 3 45 46 7 34 9 8 19 23 22 24 21 11 16 29 5 15 18 29 12 SECTION 9 PARTS LIST ...

Page 23: ...W 23 725 1672 Lens Assembly Lamp 24 725 04220 Harness Headlight 25 747 04263 Eye Bolt Chute Crank 26 790 00100 Panel Handle C Style 790 00101 Panel Handle w Cutout D Style 27 684 04104 Crank Assembly Chute 28 710 0449 Screw Carriage 5 16 18 2 25 Gr5 29 712 04081A Shoulder Nut Hex 1 4 20 30 720 0284 Knob Assembly Wing Nut 5 16 18 31 720 0201A Crank Knob 1 0 Diameter x 3 2 Black 32 726 0100 Cap Push...

Page 24: ...7 27 50 46 49 52 59 56 60 33 29 33 28 28 51 45 30 31 34 32 53 57 48 55 2 7 35 4 4 8 44 8 6 21 23 12 7 14 18 61 15 24 3 22 9 38 40 4 36 1 16 5 13 26 37 41 8 6 8 43 41 64 42 25 62 54 58 47 9 17 63 Styles C D ...

Page 25: ...ing Flange 800 ID x 910 OD 34 790 00087 Housing Bearing 1 Hex 35 790 00117 Plate Shave 2 25 x 21 66 790 00120 Plate Shave 2 25 x 23 66 790 00121 Plate Shave 2 25 x 25 66 790 00118 Plate Shave 2 25 x 27 66 36 710 04071 Bolt Carriage 5 16 18 1 0 37 720 04032 Knob Assembly 38 731 04426A Chute Upper w Domestic Label 39 731 04869 Chute Keeper Flange 40 731 04912 Chute Lower 5 0 Diameter 41 736 0159 Was...

Page 26: ... 48 56 58 7 52 7 46 49 59 44 43 54 50 17 41 55 58 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 25 7 26 27 39 9 4 65 61 63 62 64 60 45 9 Styles C D ...

Page 27: ...x 3 00 731 04877 Spacer 1 25 OD x 75 ID x 1 50 27 738 04095A Axle 75 x 22 28 738 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 Found on models with a 22 inch auger housing only 33 748 0190 Spacer 508 ID x 75 OD x 68 34 756 0625 Roller Cable 35 784 5687A Guide Bracket Auger Cable 36 7...

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...

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