MTD 615 - Manual (Page 17)

17
Drive Belt
• Follow steps 1 through 4 of steps previous
instructions.
• Pull idler pulley up, and lift belt off engine pulley and
friction wheel disc. See Figure 21.
• Using a wrench, loosen the nut on the stop bolt until
the support bracket rests on the auger pulley.
See Figure 23.
Figure 23
• Slip belt between friction wheel and friction wheel
disc. Remove and replace belt. Reassemble in
reverse order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled. See Figure 23.
Changing Friction Wheel Rubber
The rubber friction wheel is subject to wear and should
be checked after 25 hours of operation, and periodically
thereafter. Replace the friction wheel rubber if any
signs of wear or cracking are found.
• Drain gasoline from snow thrower, or place a piece
of plastic under the gas cap.
• Tip the snow thrower up and forward, so that it rests
on housing. Refer to Figure 24.
Figure 24
• Remove six self-tapping screws from the frame
cover underneath the snow thrower.
• Remove the klick pins which secure the wheels,
and remove the wheels from the axle.
• Using a wrench to hold the shaft, loosen, but do not
completely remove, the hex nut and bell washer on
the left end of gear shaft. See Figure 24
• Lightly tap the hex nut to dislodge the ball bearing
from the right side of the frame. Remove the hex
nut and bell washer from the left end of the shaft.
• Slide the gear shaft to the right then slide the
friction wheel assembly from the shaft.
• Remove the four screws from the friction wheel
assembly. See Figure 25.
Figure 25
• Remove the friction wheel rubber from between the
friction wheel plate.
• Reassemble new friction wheel rubber to the
friction wheel assembly, tightening the six screws in
rotation and with equal force. See Figure 25.
• Slide friction wheel assembly back onto the gear
shaft. Be sure to align the pin on the shift rod with
hole in the friction wheel assembly. See Figure 22.
• Reassemble gear shaft and the wheels. Reattach
the frame cover. Flip snow thrower back to its
operating position and remove any plastic from
under the machine or around the gas cap if you had
put it earlier.
Friction
Stop
Bolt
Support Bracket
Drive Belt
Friction Wheel
Wheel Disc
Hex Nut and
Bell Washer
Chute
Auger
shown resting on
its auger housing
Note: The unit is
Plates
Screws
Friction Wheel Rubber
Hub
Bearing