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Air Filter
AirFilter Cover
Scr6ws
• Clean the cover and the area around
itto keep debds from fallingintothe
carburetor chamber when the cover
isremoved.
• Remove parts as illustrated.
• Wash the filter insoap and water.
• Allow filterto dw.
• Apply a few drops of oilto the filter;,
squeeze filterto distributeoil.
• Replace parts.
REPLACE SPARK PLUG
Replace spark plug each year toen-
sure the engine startseasier and runs
better. Set spark pluggap at .025 in.
Ignitiontimingisfixed, nonadjustable.
• Twist,then pull offspark plugbooL
• Remove spark plugfrom cylinderand
discard.
• Replacewith Champion CJ-SYspark
plugand tightenwith a 3/4 in. socket
wrench (10-12 ft.-lbs).
• Reinstallthe sparkplugbooL
REPLACE FUEL RLTER
To replacefuel filter,drain unitby run-
ningitdry offuel, then removefuel cap/
retainerassemblyfromtank. Pullfilter
from tank and remove itfromthe fuel
line. Installnew fuelfilter onfuel line;
reinstallparts.
We recommend all service and adjust-
ments not listedin this manual be pep
formed by your Sears Service Center.
CARBURETOR ADJUSTMENT
Carburetor adjustment iscriticaland if
done impropedy can permanentlydam-
age the engine as well as the carbure-
tor.Ifyou require furtherassistance or
are unsureabout performingthispro-
cedure, call our customer assistance
help lineat 1-800-235-5878.
Old fuel, a dirtyairfilter, a dirtyfuel fil-
ter, or floodingmay give the impression
of an improperlyadjustedcarburetor.
Check these conditions before adjust-
ingthe carburetor.
The carburetor has been carefullyset
at the factory.Adjustments may be
necesshryif you noticeany of the fol-
lowingconditions:
• Enginewill not idle. See_ldld Spaed,
and "Mixture" under adjusting
procedure.
• Engine diesor hesitates instead of
accelerating. See =Acceleration
Check" under adjustingprocedure.
• Lossof power. See "Mixture"under
adjustingprocedure.
CARBURETOR PRESETS
When making carburetor preset adjust-
ments, do notforce plasticlimitercaps
beyopd_the_stopsor damage willoccur.
Ifcarbu'Fe-'torpresets are not needed,
proceed to "ADJUSTINGPROCEDURE,
Idle Speed."
Toadjust presets:
• Turnthe mixturescrew counterclock-
wise untilit stops.
• Turnthe idlespeed screw clockwise
untilitstops. Nowturn counterclock-
wise 4-1/2turns.
Start motor, let itrun for3 minutes, and
proceed tothe adjustmentsection. If
engine does notstart, referto trouble-
shootingchad or call 1-800-235-5878.
If engineperformanceis acceptable at
the preset positions,no furtheradjust-
mentsare necessary.
IdleSpeed
Screw
MixtureScrew
(withUmiterCap)
ADJUSTING PROCEDURE
Idle Speed "IDLE"
Allowengine to idle. Adjustspeed until
engine runswithoutstalling.
• Turnclockwiseto increaseengine
speed if engine stallsordies.
• Turn counterclockwise to decrease
speed.
No further adjustmentsare necessary if
performanceis satisfactory.
Mixture "MIX"
Allow engineto idle.Then accelerate
the engine and note pedormanoe !f
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