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20
MAINTENANCE
Figure 31
Figure 32
Friction Wheel Ass’y.
Hex Shaft
Slide Hex
Shaft Out
Right Side
Remove Hex Screw
Belleville Washer
2. Remove the belt from the bottom drive pulley and the engine pulley.
3. Install the new belt on the pulleys in the reverse order and re-tension with
the idler pulley.
Reassemble your unit by performing the previous steps in the opposite
order.
Changing Friction Wheel Rubber
WARNING: Run the engine completely dry of gasoline
before tipping snowthrower.
WARNING: The rubber on the friction wheel is subject
to wear and should be checked after the first 25 hours
of operation, and periodically thereafter. Replace the
friction wheel rubber if any signs of wear or cracking
are found.
1. Tip the snow thrower up and forward, so that it rests on the housing.
2. Remove screws from the frame cover underneath the snow thrower.
See Figure 15.
3. Remove the right wheel(s) from the axle.
4. Using a 3/4” wrench, hold the hex shaft and remove the hex bolts and
cupped washer and bearing from left side of the frame. Refer to Figure
31.
5. Holding the friction wheel assembly, slide the hex shaft out of the right
side of the unit. The spacer on the left side of the hex shaft will fall and
the sprocket should remain hanging lose in the chain.
6. Lift the friction wheel assembly out between the axle shaft and the
drive shaft assemblies.
7. Remove four screws securing the friction wheel rubber between the
friction wheel plates. See Figure 32. Discard old rubber.
8. Reassemble the new friction wheel rubber to the friction wheel
assembly, tightening the four screws in rotation and with equal force. It
is important to assemble the rubber on the friction wheel symmetrically
for proper functioning.
9. Insert the pin from the shift arm assembly into the friction wheel
assembly and hold assembly in position. Refer to Figure 33.
10. Slide the hex shaft through the right side of the housing and through
the friction wheel assembly.
11. Insert the hex shaft through the sprocket and the spacer. Make
certain that the chain engages both the large and the small sprocket.
NOTE: If the sprocket fell from the snow thrower while removing the hex
shaft, place the sprocket on the hex shaft. Position the hex hub of the
sprocket toward the friction wheel when sliding the sprocket on to the hex
shaft.
12. Slide the bearing onto the left end of the hex shaft and press into
the hole on the left side the frame.
13. Secure with the cupped washer and hex bolt removed earlier.
14. Secure the frame cover with self-tapping screws. Put the snow thrower
down to its normal operating position.
Figure 33