To Replace Auger Shear Bolt; To Adjust Carburetor; Storage; Parts Bag - Craftsman 536.884780 Owner's Manual

SERVICE AND ADJUSTMENTS
TO REPLACE AUGER SHEAR BOLT
The augers are secured to the auger shaft with special
bolts (See FIG. 7) that are designed to break (to protect
the machine) if an object becomes lodged in the auger
housing. Use of a harder bolt will destroy the protection
provided by the shear bolt.
IMPORTANT:
TO INSURE SAFETY AND PERFOR-
MANCE LEVELS, ONLY ORIGINAL
EQUIPMENTSHEAR BOLTS SHOULD
BE USED.WHEN REPLACING SHEAR
BOLTS, BE SURE TO REPLACE
SHEAR BOLT SPACERS.
TO replace a broken shear bolt, proceed as follows:
• Move the throttle to €I (STOP) and turn off all
controls.
• Disconnect the spark plug wire. Be sure all moving
parts have stopped.
• Remove the broken shear bolt.
• Lubricate the augershaft by squirting oil into the shear
bolt hole in the auger shaft. Then rotate the auger to
distribute the oil on the shaft.
• Align the hole in the auger with the hole in the auger
shaft. Insta]l the new shear bolt, shear bolt spacer, and
Iocknut provided in parts bag.
• Reconnect the spark plug wire.
TO ADJUST CARBURETOR
The carburetor (See FIG. 8and FIG. 1-Storage, page
21) has been pre-set at the factory and readjustment
shouldnot be necessary. However, ifthe carburetordoes
need to be adjusted, proceed as follows:
• Close the high speed adjusting screw by hand.
Do not over-tighten.
Then open it 1-1/4 to 1-1/2 turns.
Close the idle adjusting screw by hand. Do not over-
tighten.
Then open it 1-1/4 to 1-1/2 turns.
Start the engine and let it warm up.
• Set the throttle control to _ (FAST). Adjust the high
speed adjusting screw in until the engine speed or
sound alters. Adjust the screw out until the engine
speed sound alters. Note the difference between the
two limits and set the screw in the middle of the range.
• Let the engine run undisturbed for 30 seconds after
each setting to allow the engine to react to the previ-
ous adjustment.
SHEAR
BOLT
I_ SHEAR BOLT
LI _ -:" SPACER
AUGER
SHAFT
FIG. 7
'_E AD CARBURET°R
JUSTING SCREW
(Close finger tight only)
IGH SPEED ADJUSTING
SCREW
BOWL DRAIN (Close finger tight only)
FIG. 8
IMPORTANT:
Set the throttlecontrol to ._ (SLOW). Adjustthe idle
adjusting screw in until the engine speed drops, then
adjust the screw out until the engine speed drops.
Note thedifferencebetween the two limitsand set the
screw in the middle of the range.
If the engine tends to stall under load or does not
accelerate from low speed to high speed properly,
adjustthe highspeed screwout in 1/8turn increments
untilthe problemis resolved.Letthe engine run for30
seconds between settings.
NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY
SET FOR PROPER ENGINE SPEED.
OVER-SPEEDING 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 SERVICE CEN-
TER, WHICH HAS THE PROPER
EQUIPMENT AND EXPERIENCE TO
MAKE ANY NECESSARY
ADJUSTMENTS.
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