Sears Craftsman 536.887751 Manual Del Operador página 29

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HOW TO ADJUST OR REPLACE
THE FRICTION WHEEL
How To Check The Friction Wheel
If the snow thrower will not move for-
ward, check the traction drive belt, the
traction drive cable or the friction wheel.
If the friction wheel is worn or damaged.
it must be replaced. See "How To Re-
place the Friction Wheel" in this section.
If the friction wheel is not worn or dam-
aged, check as follows.
1. Run the engine until the fuel tank is
empty and the engine stops.
2. Stand the snow thrower up on the
front end of the auger housing
(see Figure 48).
3. Disconnect the spark plug wire.
4. Loosen the bolts on each side of
the bottom panel (see Figure 48).
5. Remove the bottom panel.
6. Position the shift speed lever in
the lowest forward speed.
7. Note the position of the friction
wheel (see Figure 49). The correct
distance "A" from the right side of
the friction wheel to the outside of
the motorbox is as follows:
Tire Size Distance "A"
12 and 13 inch 4-1/8"
16 inch 4-5/16"
If the friction wheel is not in the
correct position, adjust according to
the following instructions,
How To Adjust The Friction Wheel
1. Position the shift speed lever in
the lowest forward speed.
2. Remove washer and cotter pin
that connect the trunnion nut to the
shifter rod, Remove the trunnion
nut from the shifter rod (see
Figure 50).
3. Move the friction wheel to the cor-
rect position (see Figure 49).
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4. Turn the trunnion nut until it is
aligned with the mounting hole in
the shifter rod (see Figure 50).
When aligned, attach the trunnion
nut and secure with washer and cot-
ter pin.
5. Install the bottom panel (see
Figure 48).
6. Tighten the bolts on each side of
the bottom panel.
Bolt Bottom Panel
Auger
Housing
\ Bolt
Figure 48
29
Figure 49
Speed Control Rod
Trunnion Nut
//_ Cotter Pin - -.
/,/,_-- Figure 50