Belt Adjustment - Craftsman 536.889251 Manual Del Usuario

BELT ADJUSTMENT
Traction Drive Belt
After approximately ten hours of opera-
tion, a new belt will stretch and require
an adjustment of the belt tension. Also,
if your snow thrower experiences a loss
of power under heavy load, check the
condition of the traction drive belt. if it is
damaged or loose, replace it (see "How
To Replace The Belts" in this section of
the manual).
1. Disconnect spark plug wire.
2. Unlock both left and right wheel
locks. See "How To Use The Wheel
Lockout" in the Operation section.
3. Remove screw from belt cover.
Remove belt cover (see Figure 34).
igure 34
4. Loosen nut on traction idler pulley
and move traction idler pulley to-
wards belt about 1/8 inch (3 mm)
(see Figure 39).
5. Tighten nut.
6. Have someone engage traction
drive clutch. Check tension on belt
(opposite idler pulley). The belt
should deflect about 1/2 inch (12.5
ram) with moderate pressure
(Figure 35). You may have to move
idler pulley more than once to obtain
the correct tension.
F-031068L
25
_lb ARNING: DO NOT over
tighten belt. If the belt is too
tight, the drive will not dis-
engage. Before operating, check the
belt tension following the instruc-
tions in step 8.
Traction
Drive
/ Engine
Pu,,ey
, J "t\O 1/2 inch
_-- _ (12.5mm)
Idler__.___(F .j\_J'/" Deflection
Pulley 7OJ " "_
Engaged _J ',
Figure 35
7. Reinstall belt cover.
8. Attach the spark plug wire. Before
operation, check the belt tension as
follows:
a. Unlock both left and right wheel
locks. See "How To Use The
Wheel Lockout" in the Operation
section.
b. Move the shift lever to NEUTRAL
position.
c. DO NOT engage the traction
drive lever.
d. Start the engine.
e. Slowly move the shift lever for-
ward. Watch the axles for rota-
tion. If the axles rotate, the
traction drive belt is too tight.
f. If the belt is too tight, again ad-
just the belt. After each adjust-
ment, check the belt tension
before operating.
9. In correct adjustment, the snow
thrower will not experience a loss of
power under heavy load and the
drive will automatically disengage
when the traction drive lever is re-
leased.