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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 inthe 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
BEUSED.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 theaugershaft bysquirting oil intothe 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]lthe new shear bolt, shear boltspacer,and
Iocknut provided in parts bag.
• Reconnect the spark plugwire.
TO ADJUST CARBURETOR
The carburetor (See FIG. 8and FIG. 1-Storage, page
21) has been pre-set at the factory and readjustment
shouldnotbe necessary.However,ifthecarburetordoes
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 idleadjusting screw by hand. Do notover-
tighten.
Then open it1-1/4 to 1-1/2 turns.
Start the engine and let itwarm up.
• Set thethrottlecontrol to_ (FAST). Adjust thehigh
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 inthemiddle of therange.
• Let the engine run undisturbed for 30 seconds after
each setting to allow the engine to react tothe previ-
ous adjustment.
SHEAR
BOLT
I_ SHEAR BOLT
LI _ -:" SPACER
AUGER
SHAFT
FIG. 7
'_E ADCARBURET°R
JUSTING SCREW
(Close finger tight only)
IGH SPEED ADJUSTING
SCREW
BOWL DRAIN (Close finger tight only)
FIG. 8
IMPORTANT:
Set thethrottlecontrol to._ (SLOW). Adjustthe idle
adjusting screw in untilthe engine speed drops, then
adjust the screwout untilthe engine speed drops.
Note thedifferencebetween thetwo limitsand setthe
screw inthe middleofthe range.
If the engine tends to stall under load or does not
accelerate from low speed to high speed properly,
adjustthehighspeed screwoutin1/8turnincrements
untiltheproblemis resolved.Lettheenginerun for30
secondsbetween 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 BEDANGEROUS. 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.
19
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