SERVICE AND MAINTENANCE
4.Using a 3/4” wrench, hold the hex shaft and remove the hex screw and belleville washer and bearing from left side of the frame. Refer to Figure 32.
5.Holding the friction wheel assembly, slide the hex shaft out of the friction wheel assembly and the right side of the frame. 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 to the hub assembly (refer to Figure 33). Discard old friction wheel.
8.Reassemble the new friction wheel onto the hub assembly, tightening the four screws in rotation and with equal force. It is important to assemble the friction wheel symmetrically for proper functioning.
9.Reposition the friction wheel assembly in the snow thrower frame. Insert the pin from the shift arm assembly into the friction wheel assembly and hold assembly in position. Refer to Figure 34.
10.Slide the hex shaft through the right side of the frame toward the left side and through the friction wheel assembly.
11.After making certain that the chain is on both the large and the small sprocket, align the hex shaft with the hex hub of the small sprocket, and slide the shaft through the sprocket.
NOTE: If the sprocket fell from the snow thrower while removing the hex shaft, place the sprocket on the chain. Realign the sprocket on the chain with the hex hub facing the right side of unit. Position the hex hub of the sprocket toward the friction wheel when sliding the sprocket on to the hex shaft.
Figure 31
Remove Hex Screw
Belleville Washer
Friction Wheel Ass’y.
Slide Hex
Shaft Out
Right Side
Hex Shaft
Figure 32
Figure 33
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