Craftsman 247.8897 - Manual (Page 23)

23
SERVICE AND MAINTENANCE
Figure 30
Figure 31
Figure 32
Carefully remove the hex nut and washer which secures the hex 6.
shaft to the snow thrower frame and lightly tap the shaft’s end
to dislodge the ball bearing from the right side of the frame. See
Figure 30.
NOTE: Be careful not to damage the threads on the shaft.
7. Carefully position the hex shaft downward and to the left before
carefully sliding the friction wheel assembly off the shaft. See
Figure 31.
NOTE: If you’re replacing the friction wheel assembly as a whole,
discard the worn part and slide the new part onto the hex shaft.
Follow the steps above in reverse order to reassemble components. If
you’re disassembling the friction wheel and replacing only the rubber
ring, proceed as follows:
Remove the four screws which secure the friction wheel’s side 1.
plates together. See Figure 32.
Remove the rubber ring from between the plates.
2.
Reassemble the side plates with a new rubber ring. 3.
NOTE: When reassembling the friction wheel assembly, make sure
that the rubber ring is centered and seated properly between the side
plates. Tighten each screw only one rotation before turning the wheel
clockwise and proceeding with the next screw. Repeat this process
several times to ensure the plates are secured with equal force
(between 6 ft-lbs and 9 ft-lbs).
4. Slide the friction wheel assembly back onto the hex shaft and
follow the steps above in reverse order to reassemble
components.
5. Perform the Drive Control Test outlined earlier in the Service and
Maintenance section.