11
SECTION 6: MAINTAINING YOUR SNOW THROWER
WARNING:
Before servicing, repairing,
or inspecting, disengage all clutch levers
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.
Lubrication
Chute Directional Control
•
The worm gear on the chute directional control
should be greased with multipurpose automotive
grease.
Wheels
•
Oil or spray lubricant into bearings at least once a
season. Pull the klick pins and remove wheels,
clean and coat axles with a multipurpose
automotive grease. See Figure 12.
Figure 12
Gear Shaft
•
Lubricate the gear shaft with a good all-weather
multi-purpose light grease at least once a season
or after every 25 hours of operation.
IMPORTANT:
Keep all grease and oil off friction wheel
and drive plate.
Drive and Shifting Mechanism
•
Remove rear cover. Oil any chains, sprockets,
gears, bearings, shafts, and 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.
Gear Case
•
The worm gear case has been filled with grease
at the factory. If disassembled for repairs,
lubricate with 2 ounces of shell grease, part no.
737-0168.
IMPORTANT:
Do not overfill the gear case. Damage to
the seals could result. Be sure the vent plug is free of
grease in order to relieve pressure.
Engine
•
Refer to the engine manual for maintenance
procedures and instructions.
WARNING:
When following instructions
in the engine manual for draining oil, be
sure to protect frame to avoid oil dripping
onto transmission parts.
Follow the precautions listed under “Stopping Engine“
to prevent possible freeze-up.
Auger Shaft
•
At least once a season, remove shear bolts on
auger shaft. Oil or spray lubricant inside shaft.
Also lubricate the auger bearings at least once a
season. See Figure 13.
Figure 13
Klick Pin
Axle
Shear Bolts
Bearings
Bearings
Summary of Contents for 640
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