MTD White 315E646F190 - Manual (Page 13)

Support
Bracket
Rear
Auger
Belt
Front
Auger
Belt
Frame
FIGURE 19.
Idler
Spring
Auger Support
Housing Bracket
Spring
DRIVE BELT
1. Follow steps 1 through 4 of previous instructions.
2. Pull idler pulley up, and lift belt off engine pulley
and friction wheel disc. See figure 18.
3. Using a 7/16" wrench, loosen the nut on the stop
bolt until the support bracket rests on the auger
pulley. See figure 20.
4. Slip belt between friction wheel and friction wheel
disc. See figure 20. Remove and replace belt.
Reassemble following the instructions in reverse
order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled. See figure 20.
CHANGING THE FRICTION WHEEL RUBBER
The rubber on the 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.
1. Drain the gasoline from the snow thrower, or
place a piece of plastic under the gas cap.
2. Tip the snow thrower up and forward, so that it
rests on the housing.
3. Remove six self-tapping screws from the frame
cover underneath the snow thrower.
4. Remove the klick pins which secure the wheels,
and remove the wheels from the axle.
5. Remove the gear shaft from the unit by removing
the bolts, lock washers and flat washers from
each side of the frame. See figure 21. Hold the
friction wheel assembly, and slide the gear shaft
out of the unit toward the right hand side. Refer to
figure 14.
6. Remove the six screws from the friction wheel
assembly (three from each side). Remove the
friction wheel rubber from between the friction
wheel plate.
7. Reassemble new friction wheel rubber to the fric­
tion wheel assembly, tightening the six screws in
rotation and with equal force.
8. Slide the friction wheel assembly up onto the shift
mechanism as shown in figure 14, and slide the
gear shaft back into the unit. Reassemble in
reverse order.