Yard-Man 31AH553G401 - Manual (Page 15)

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• Unhook the idler spring from the hex bolt on the
auger housing. See Figure 19.
• Back out the stop bolt until the support bracket
rests on the auger pulley. See Figure 20.
NOTE: It may be necessary to loosen the six nuts that
connect the frame to the auger housing to aid in belt
removal.
• Lift the rear auger belt from the auger pulley, and
slip belt between the support bracket and the auger
pulley. See Figure 19. Repeat this step for the front
auger belt.
Figure 19
• Replace both auger drive belts by following
instructions in reverse order.
NOTE: If you placed plastic film under the gas cap, be
certain to remove it before operating the snow thrower.
Drive Belt
• Follow the first four steps of instructions to service
the auger belts.
• Pull idler pulley up, and lift belt off engine pulley and
friction wheel disc. See Figure 18.
• Back out the stop bolt until the support bracket
rests on the auger pulley. See Figure 20.
• Slip belt between friction wheel and friction wheel
disc. See Figure 20. Remove and replace belt.
• Reassemble the parts removed earlier.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled. See Figure 20.
Figure 20
Changing Friction Wheel Rubber
The rubber on the friction wheel is subject to wear and
should be checked after 25 hours of operation, and
periodically thereafter. Replace the friction wheel
rubber if any signs of wear or cracking are found.
• Drain the gasoline from the snow thrower, or place
a piece of plastic under the gas cap.Tip the snow
thrower up and forward, so that it rests on the
housing.
• Remove six self-tapping screws from the frame
cover underneath the snow thrower. See Figure 21.
• Remove the click pins which secure the wheels,
and remove the wheels from the axle.
Figure 21
• Remove the four screws securing the left drive
cover to the frame. Remove the drive cover. See
Figure 21.
Support
Bracket
Rear
Auger
Belt
Auger
Pulley
Idler
Spring
Auger
Housing
Support
Bracket
Spring
Frame
Front
Auger
Belt
Friction Wheel
Drive Plate
Drive Belt
Support Bracket
Stop Bolt
Drive Shaft
Friction
Wheel
Spacer
Hex
Shaft
Self-Tapping
Screws
Self-Tapping
Screws
Drive Cover