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• Fuel Tank - Discontinue use of unit if
fuel tank shows signs of damage or
leaks.
• Vacuum Bag - Discontinue use of vac-
uum bag if it is torn or damaged.
CLEAN UNIT & LABELS
• Clean the unit using a damp cloth with
a mild detergent.
• Wipe off unit with a clean dry cloth.
CLEAN AIR FILTER
Do not clean filter in gasoline or other
flammable solvent. Doing so can create
a fire hazard or produce harmful evapo-
rative emissions.
Cleaning the air filter:
A dirty air filter decreases engine per-
formance and increases fuel consump-
tion and harmful emissions. Always
clean after every 5 hours of operation.
Air Filter
Cover
• Clean the cover and the area around it
to keep debris from falling into the
carburetor chamber when the cover is
removed.
• Remove parts as illustrated.
• Wash the filter in soap and water.
• Allow filter to dry.
• Apply a few drops of oil to the filter;
squeeze filter to distribute oil.
• Replace parts.
REPLACE SPARK PLUG
Replace spark plug each year to ensure
the engine starts easier and runs better.
Set spark plug gap at .025 in. Ignition
timing is fixed, nonadjustable.
• Twist, then pull off spark plug boot.
• Remove spark plug from cylinder and
discard.
• Replace with Champion cJ-8Y spark
plug and tighten with a 3/4 in. socket
wrench (10-12 ft.-Ibs).
• Reinstall the spark plug boot.
REPLACE FUEL FILTER
To replace fuel filter, drain unit by run-
ning it dry of fuel, then remove fuel cap/
retainer assembly from tank. Pull filter
from tank and remove it from the fuel
line. Install new fuel filter on fuel line;
reinstall parts.
We recommend all service and adjust-
ments not listed in this manual be per-
formed by your Sears Service Center.
CARBURETOR ADJUSTMENT
Carburetor adjustment is critical and if
done improperly can permanently dam-
age the engine as well as the carburetor.
If you require further assistance or are
unsure about performing this procedure,
call our customer assistance help line at
1-800-235-5878.
Old fuel, a dirty air filter, a dirty fuel filter,
or flooding may give the impression of
an improperly adjusted carburetor.
Check these conditions before adjusting
the carburetor.
The carburetor has been carefully set at
the factory. Adjustments may be neces-
sary if you notice any of the following
conditions:
• Engine will not idle. See "Idle Speed"
and "Mixture" under adjusting
procedure.
-9-
• Engine dies or hesitates instead of ac-
celerating. See "Acceleration Check"
under adjusting procedure.
• Loss of power. See "Mixture" under ad-
justing procedure.
CARBURETOR PRESETS
When making carburetor preset adjust-
ments, do not force plastic limiter caps
beyond the stops or damage will occur.
If carburetor presets are not needed,
proceed to "ADJUSTING PROCEDURE,
Idle Speed."
To adjust presets:
• Turn the mixture screw counterclock-
wise until it stops.
• Turn the idle speed screw clockwise
until it stops. Now turn counterclock-
wise 4-1/2 turns.
Start motor, let it run for 8 minutes, and
proceed to the adjustment section. If en-
gine does not start, refer to troubleshoot-
ing chart or call 1-800-235-5878.
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