MTD 769-04164 warranty Maintenance Service

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Maintenance

& Service

WARNING

Always stop engine, disconnect spark plug, and ground against engine before cleaning, lubricating or doing any kind

of maintenance or adjustments on your machine.

NEVER replace the auger shear pins with standard pins or fas- teners. 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.

NOTE: If auger contin- ues to rotate with the control disengaged, shut off engine and re-adjust.

General Recommendations

1.Always observe safety rules when performing any maintenance.

2.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 war- ranty, operator must maintain the snow thrower as instructed in this manual.

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

WARNING: Before servicing, repairing, lubricating or inspecting, disengage all controls and stop engine. Wait until all moving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unintended starting. Always wear safety glasses during operation or while per- forming any adjustments or repairs.

Shave Plate and Skid Shoes

The shave plate and skid shoes on the bottom of the snow thrower are subject to wear. They should be checked periodically and replaced when necessary. To remove skid shoes:

1.Remove the four carriage bolts and hex flange nuts which secure them to the snow thrower.

2.Reassemble new skid shoes with the four carriage bolts (two on each side) and hex flange nuts. Refer to Figure 9.

To remove shave plate:

1.Remove the carriage bolts and hex nuts which attach it and the skid shoes to the snow thrower housing.

2.Reassemble new shave plate, making sure heads of carriage bolts are to the inside of housing. Tighten securely.

Augers

•The augers are secured to the spiral shaft with two shear pins and cotter pins. If the auger should strike a foreign object or ice jam, the snow thrower is designed so that the pins may shear.

•If the augers will not turn, check to see if the pins have sheared. When replacing pins, spray an oil lubricant into shaft before inserting new pins.

Lubrication

1.Lubricate pivot points on the auger control and drive control with a light engine oil once a season. See Figure 10.

2.Lubricate the face of the auger idler bracket with a light weight cold weather lubricant at least once a season. See Figure 10.

Shear Pin

Cotter Pin

Skid Shoe

Carriage

Bolt

Shave Plate

Hex Nut	Carriage
	Bolt	Hex Nut

Figure 9

Lubricate

Lubricate

Figure 10

Engine

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

Check V-Belts

Follow instructions below to check condition of drive belts every 50 hours of operation.

1.Remove the plastic belt cover on the front of the engine by removing the self-tapping screw and press- ing the plastic tabs to release the belt cover.

2.Visually inspect for frayed, cracked, or excessively worn out belts. Replace, if necessary.

Replacing Belts

NOTE: There are two belts on this snow thrower: an auger belt and drive belt. It is recommended that both belts be replaced at the same time.

1.Remove the spark plug wire from spark plug and ground it against the engine to prevent accidental starting.

2.Drain gasoline from the gas tank, or place a piece of plastic sheet underneath the gas cap to prevent gasoline leakage.

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