Maintaining Your Snow Thrower - Yard-Man 31AE633E401 Operator's Manual

Drive Wheels
The wheels may be adjusted for two different methods
of operation. The adjustment is made by placing the
click pins in one of two different holes on the right side
of the unit. See Figure 16.
One Wheel Driving—Insert the click pin only
through the outside hole of the axle (not the rim) on
the right side of the snow thrower. This position
gives power drive to the left wheel only, making the
unit easier to maneuver.
Both Wheels Driving—Insert the click pin through
the hole in the hub of the rim and the inside hole on
the snow thrower's right axle. This position is good
for heavy snow as there is power drive in both
wheels.
SECTION 6: MAINTAINING YOUR SNOW THROWER
Lubrication
Before lubricating, 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.
Wheels
• Oil or spray lubricant into plastic wheel bearings
inside the wheel hubs at least once a season.
Remove wheels, clean and coat axles with a multi-
purpose automotive grease. See Figure 17.
Figure 17
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 14.
Click Pin
Axle
Oil or spray lubricant here
Never operate the snow thrower with the
IMPORTANT:
click pin inserted through both the rim and the outside
hole in the axle. Doing so can result in serious damage
to the drive system.
Keep all grease and oil off the rubber
IMPORTANT:
friction wheel and aluminum drive plate.
Chute Directional Control
The spiral on the end of the chute directional control
and the base of the discharge chute itself should be
lubed with multi-purpose automotive grease once a
season. See Figure 19.
Engine
Refer to the seperate engine manual packed with your
unit for all engine lubrication instructions.
Auger Shaft
• At least once a season, remove shear bolts from
auger shaft. Oil or spray lubricant inside shaft. See
Figure 18. Also lubricate the plastic auger bearings
at least once a season.
Plastic Bearings
Drive and Shifting Mechanism
At least once a season or after every 25 hours of
13
Inside Hole
in Axle
Click Pin
in Outside Hole
Figure 16
Shear Bolts
Figure 18