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SERVICE A DADJUST
,li,,,,n.... i,,
TO REPLACE AUGER SHEAR BOLT
The augers are secured to the auger shaft with special
bolts (See Fig 33) 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
PERFORMANCE LEVELS, ONLY
ORIGINAL EQUIPMENT SHEAR
BOLTS SHOULD BE USED WHEN
REPLACING SHEAR BOLTS, BESURE
TO REPLACE SHEAR BOLT
SPACERS.
To replace a broken shear bolt, proceed as follows:
e Move the throttle to STOP and turn off all controls
e Disconnect the spark plug wire. Be sure all moving
parts have stopped..
• Lubricate the auger shaft zerk fitting (see the Cus-
tomer Responsibilities section on pages 15-16)
® Atignthe hote in the auger with the hote in the auger
shaft.. Install the new shear bolt and shear bolt
spacer provided..
® Reconnect the spark plug wire
ENTS
SHEAR BOLT_
-- SHEAR BOLT
SPACER
LOCKNUT_
TO ADJUST CARBURETOR
The carburetor (See Fig.. 34 and Fig. 36, Page 24) has
been pre-set at the factory and readjustment should not
be necessary However, ifthe carburetordoes need to be
adjusted, proceed as follows:
Close the high speed adjusting screw by hand
e
o
®
o
Do not over-tighten
FIG. 33
_,_ CARBURETOR
_ ADJUSTING SCREW
(Close finger tighl only)
/ _ HIGH SPEED ADJUSTING
_SCREW
BOWL DRAIN (Close finger tight only}
FIG. 34
If the engine tends to stall under load or does not
accelerate from low speed to high speed properly,
adjust the high speed screw out in I/8 turn incre-
ments until the problem is resolved Let the engine
Then open it 1-114to 1-112 turns, run for 30
Close the idle adjusting screw by hand Do not over- IMPORTANT:
tighten.
® Then open it t-t/4 to 1-1/2 turns.
® Start the engine and let it warm up
® Set the throttle control to RUN 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 belween
the two limits and set the screw in the middle of the
range
e Let the engine run undisturbed for 30 seconds after
each setting to allow the engine to react to the
previous adjustment
® Set the throttle control to SLOW. Adjust the idle
adjusting screw in until the engine speed drops,
then adjust the screw out until the engine speed
drops Note the difference between the two limits
and set the screw in the middle of the range
seconds between settings,
NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH ISFACTORY SET
FOR PROPER ENGINE SPEED
OVERSPEEDING THE ENGINE
ABOVE THE FACTORY HIGH SPEED
SETTING CAN BE DANGEROUS
IF YOU THINK THE ENGINE -
GOVERNED HIGH SPEED NEEDS
ADJUSTING, CONTACT YOUR
NEARESTSEARS SERVICE CENTER,
WHICH HAS THE PROPER
EQUIPMENT AND EXPERIENCE TO
MAKE ANY NECESSARY
ADJUSTMENTS.
22
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