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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 38.
Remove Hex Screw
Belleville Washer
Hex Shaft
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 39). 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 speed selector arm assembly into the
friction wheel assembly and hold assembly in position. Refer to
Figure 40.
SERVICE AND MAINTENANCE
Friction Wheel Ass'y.
Slide Hex
Shaft Out
Right Side
Figure 38
Figure 39
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.
12.
Slide the spacer onto the end of the hex shaft.
Note: The spacer is to be placed on the hex shaft between the
sprocket and bearing previously removed on the left side of the
frame.
13.
Align the bearing on the right end of the hex shaft with the hole
in the right side of the frame, then push the hex shaft to the left
into position in the frame.
14.
Slide the bearing onto the left end of the hex shaft and press into
the hole on the left side the frame.
15.
Place the belleville washer (rounded side toward head) onto the
hex screw removed earlier, and insert the screw into the threaded
hole of the hex shaft.
16.
Gradually tighten the hex screw to fully seat the bearings in each
side of the frame and to secure the hex shaft.
17.
Position the frame cover on the bottom of the frame and secure
with the self-tapping screws. Pivot the snow thrower down to it
normal operating position.
IMPORTANT: Repeat the drive control test from the Assembly section
of this manual before operating the snow thrower.
26
Figure 40
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