Craftsman 536.881112 Operator's Manual page 31

HOW TO REPLACE
THE AUGER SHEAR BOLT
The augers are secured to the auger
shaft with special shear bolts. These
shear bolts are designed to break and
protect the machine if an object be-
comes lodged in the auger housing. Do
not use a harder bolt as the protection
provided by the shear bolt will be lost.
_hb WARNING: For safety andto
protect the machine, use only
original equipment shear bolts.
To replace a broken shear bolt, proceed
as follows. Extra shear bolts were pro-
vided in the assembly parts bag.
1. Move the throttle control to the stop
position. Disengage all controls.
2. Disconnect the spark plug wire.
Make sure all moving parts have
stopped.
3. Align the hole in the auger with the
hole in the auger shaft. Install the
new shear pin and spacer. See
Figure 43.
4. Connect the spark plug wire.
/ •
_ She_ar Pin
Figure 43
TO ADJUST
THE CARBURETOR
If you think your carburetor needs ad-
justing, see your nearest Craftsman
Store. Engine performance should not
be affected at altitudes up to 7,000 feet.
For operation at higher elevations, con-
tact your nearest Sears Store.
IMPORTANT: Never tamper with the
engine governor, which is factory set for
proper engine speed. Over-speeding
F-011047L
the engine above the factory high
speed setting can be dangerous. If you
think the engine-governed high speed
needs adjusting, contact your nearest
Sears Store, which has the proper
equipment and experience to make any
necessary adjustments.
TO ADJUST OR REPLACE
THE SPARK PLUG
If you have difficulty starting the snow
thrower, adjust or replace the spark
plug. Replace the spark plug is the
electrodes are pitted or burned or if the
porcelain is cracked. Follow the instruc-
tions below.
To adjust:
1. Clean spark plug by carefully
scraping the electrodes (Do not
sand blast or use a wire brush).
2. Be sure spark plug is clean and
free of foreign material. Check elec-
trodes gap with a wire feeler gauge
and reset gap to 0.030" if neces-
sary. See Figure 44.
To Replace:
1. If you need a new spark plug, use
only the proper replacement spark
plug.
2. Set the gap to 0.030 inches.
3. Before installing the spark plug,
lightly coat the spark plug threads
with oil or grease to insure easy re-
moval.
4. Firmly tighten the spark plug in the
engine.
5. If a torque wrench is available,
torque the plug to 18 to 23 foot
pounds.
Feeler Gauge
31
Spark Plug
Figure 44