Craftsman 247.881720 Manual Del Operador página 22

4. Carefully pivot the snow thrower up and forward so that it rests on
the auger housing.
5. Remove the frame cover from the underside of the snow thrower
by removing the self-tapping screws which secure it. Refer to
Figure 24.
6. Back out the stop bolt to increase the clearance between the
friction wheel disc and friction wheel. See Figure 28.
7. Slip the drive belt off the pulley and between friction wheel and
friction wheel disc. See Figure 28.
8. Remove and replace belt in the reverse order. Be sure to reinstall
the stop bolt.
FRICTION WHEEL REMOVAL
If the snow thrower fails to drive with the drive control engaged,
and performing the drive control cable adjustment fails to correct
the problem, the friction wheel may need to be replaced. Follow the
instructions below. Examine the friction wheel rubber for signs of wear
or cracking and replace wheel if necessary.
1. To prevent spillage, remove all fuel from tank by running engine
until it stops.
2. Place the shift lever in third Forward (F3) position.
3. Carefully pivot the snow thrower up and forward so that it rests on
the auger housing.
4. Remove the frame cover from the underside of the snow thrower
by removing the self-tapping screws which secure it.
5. Remove the right-hand wheel by removing the screw and bell
washer which secure it to the axle. See Figure 29.
6. Carefully remove the hex nut and washer which secures the hex
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.
SERVICE AND MAINTENANCE
Friction
Wheel
Friction
Wheel Disc
Stop Bolt
22
Figure 28
Figure 29
Figure 30