Yard-Man 31AE993I401 Maintaining Your Snow Thrower, General Recommendations, Carburetor, Engine

Page 12
SECTION 6: MAINTAINING YOUR SNOW THROWER

SECTION 6: MAINTAINING YOUR SNOW THROWER

WARNING: Before lubricating, repair- ing, or inspecting, disengage all clutch levers and stop engine. Wait until all mov- ing parts have come to a complete stop. Disconnect the spark plug wire and ground it against the engine to prevent unintended starting.

General Recommendations

Always observe safety rules when performing any maintenance.

The warranty on this snow thrower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain the snow thrower as instructed in this manual.

Some adjustments will have to be made periodically to maintain your unit properly.

All adjustments in the service and adjustments sections of this manual should be checked at least once each season.

Follow the maintenance schedule given below.

Periodically check all fasteners and hardware to make sure these are tight.

Carburetor

WARNING: If any adjustments are made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of heated surfaces and mufflers.

Minor carburetor adjustments may be required to compensate for differences in fuel temperature, altitude and load. Refer to the engine manual for instructions.

Lubrication

Gear Shaft

Lubricate the gear shaft with 6-in-1 grease (part number 737-0170) at least once a season, or after every 25 hours of operation. Refer to Figure 10.

IMPORTANT: Keep all grease and oil off the rubber friction wheel and drive plate.

Engine

Refer to the separate engine manual packed with your unit for all engine lubrication instructions.

Auger Shaft

At least once a season, remove the shear bolts from the auger shaft and spray lubricant inside the shaft. See Figure 12.

Vent Plug

Shear Bolts

Bearings

Figure 12

Discharge Chute

The base of the discharge chute and the spirals on the chute crank should be lubricated at least every 25 hours of use. Apply the lubricant under the base of the chute and where the spirals contact the discharge chute. See Figure 13.

Lube Under Chute Base

Chute Crank Spirals

Figure 13

Drive and Shifting Mechanism

At least once a season or after every 25 hours of operation, remove rear cover. Lubricate any chains, sprockets, gears, bearings, shafts, and the shifting mechanism at least once a season. Use engine oil or a spray lubricant. Avoid getting oil on rubber friction wheel and aluminum drive plate. Refer to Figure 10.

Gear Case

The gear case is lubricated with grease at the factory and it does not require checking. If disassembled for any reason, lubricate with 2 ounces of Shell Alvania grease EPR00, part number 737-0168. Before reassembling, remove old sealant and apply new sealant. See Figure 12.

12

Image 12
Contents Model 31AE993I401 OPERATOR’S MANUAL33” Snow Thrower MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIOTABLE OF CONTENTS ContentFINDING MODEL NUMBER CALLING CUSTOMER SUPPORTSECTION 1 IMPORTANT SAFE OPERATION PRACTICES TrainingPreparation OperationMaintenance And Storage SECTION 2: ASSEMBLING YOUR SNOW THROWER UnpackingLoose Parts Assembling HandleFinal Adjustments Traction Control and Shift LeverAuger Control SECTION 3: KNOWING YOUR SNOW THROWER Auger ControlTraction Control / Auger Control Lock Skid ShoesSafety Ignition Key Shift LeverChute Crank Chute Tilt ControlSECTION 4: OPERATING YOUR SNOW THROWER Before StartingGas And Oil Fill-up To Start EngineSECTION 5: MAKING ADJUSTMENTS To Stop EngineTo Engage Wheel Drive To Engage AugersSkid Shoe Adjustment Auger Control AdjustmentChute Assembly Drive WheelsSECTION 6: MAINTAINING YOUR SNOW THROWER General RecommendationsCarburetor LubricationSECTION 7: SERVICING YOUR SNOW THROWER AugersShave Plate and Skid Shoes Auger Bearings and ShaftReplacing Belts Auger BeltChanging Friction Wheel Rubber Drive BeltEngine SECTION 8: OFF-SEASONSTORAGESECTION 9: TROUBLESHOOTING ProblemCause RemedyModel 31AE993I401 Part No Part DescriptionModel 31AE993I401 Model 31AE993I401 A 32 Model 31AE993I401 15 22 18 14 7 21 1 13 3 20 20 24 31 Notes Page MANUFACTURER’S LIMITED WARRANTY FOR