MTD 31AH553G401 Snow Blower User Manual


 
17
Reinstall the belt cover on the front of the engine
with the two self-tapping screws and flat washers.
Refer to Figure 15.
NOTE: Make sure that the auger cable is routed in front
of the belt.
Drive Belt
Drain the gasoline from the snow thrower, or place
a piece of plastic under the gas cap.
Remove the plastic belt cover on the front of the
engine by removing the two self-tapping screws.
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.
Pull the idler pulley away from the drive belt and
remove the belt from the engine pulley. You will
find the idler pulley in front of the engine and under
the belt cover that you removed earlier.
Working from the underside of the frame, slip belt
between the friction wheel and the friction wheel
disc. See Figure 20. You may have to twist the belt
flat in order to slide it through the clearance
between the friction wheel and the friction wheel
disc. Remove the belt completely.
Replace new belt. Reassemble following the above
instructions in reverse order.
Figure 20
Changing Friction Wheel Rubber
Check the rubber on the friction wheel after 25
hours of operation, and periodically thereafter.
Replace the 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 screws from the frame cover
underneath the snow thrower. Refer to Figure 12.
Remove the left wheel from the axle.
Figure 21
Remove the four screws securing the left drive
cover to the frame. Remove the drive cover from
the side of the frame. See Figure 21.
Figure 22
Holding the friction wheel assembly as shown in
Figure 22, slide the hex shaft out of the left side of
the unit. The spacer on the right side of the hex
shaft will fall and the sprocket should remain
hanging lose in the chain.
Lift the friction wheel assembly out between the
axle shaft and the drive shaft assemblies.
Remove the six screws from both sides of the
friction wheel assembly. Remove friction wheel
Friction
Wheel
Drive Belt
Location
Friction
Wheel
Disc
Idler
Pulley
Location
Drive
Cover
Drive Cover
Shift Arm
Assembly
Pin
Friction
Wheel
Sprocket
Spacer
Shift Arm Assembly
Pin
Sprocket
Spacer
Friction Wheel