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Adirtyairfilterdecreasesengineper-
formanceandincreasesfuelconsump-
tionandharmfulemissions.Always
cleanafterevery5hoursofoperation.
1.Cleanthecoverandthearea
aroundittokeepdebrisfromfalling
intothecarburetorchamberwhen
thecoverisremoved.
2.Removepartsasillustrated.
NOTE:Toavoidcreatingafirehazard
orproducingharmfulevaporativeemis-
sions,donotcleanfilteringasolineor
otherflammablesolvent.
3.Washthefilterinsoapandwater.
4.Allowfiltertodry.
5.Addafewdropsofoiltothefilter;
squeezefiltertodistributeoil.
6.Replaceparts.
REPLACESPARKPLUG
Replacesparkplugeachyeartoen-
suretheenginestartseasierandruns
better.Setsparkpluggapat0.025in.
Ignitiontimingisfixed,nonadjustable.
1.Twist,thenpulloffsparkplugboot.
2.Removesparkplugfromcylinder
anddiscard.
3.ReplacewithChampionRCJ-8Y
sparkplugandtightenwitha3/4in.
socketwrench(10-12ft.-Ibs).
4.Reinstallthesparkplugboot.
REPLACEFUELFILTER
Toreplacefuelfilter,drainunitbyrun-
ningitdryoffuel,thenremovefuelcap/
retainerassemblyfromtank.Pullfilter
fromtankandremoveitfromthefuel
line.Installnewfuelfilteronfuelline;
reinstallparts.
Fuel Filter
Fuel Line
We recommend all service and adjust-
ments not listed in this manual be per-
formed by your Sears Service Center.
CARBURETOR ADJUSTMENT
,_L WARNING: The blade will be
moving during most of this procedure.
Wear your protective equipment and
observe all safety precautions. After
making mixture adjustments, recheck
idle speed. The blade must not move
at idle speed.
Carburetor adjustment is critical and if
done improperly can permanently dam-
age the engine as well as the carbure-
tor. If you require further assistance or
are unsure about performing this pro-
cedure, call our customer assistance
help line at 1-800-235-5878.
Old fuel, a dirty air filter, a dirty fuel fil-
ter, or flooding may give the impression
of an improperly adjusted carburetor.
Check these conditions before adjust-
ing the carburetor.
The carburetor has been carefully set
at the factory. Adjustments may be
necessary if you notice any of the fol-
lowing conditions:
• The blade moves at idle. See IDLE
SPEED under adjusting procedure.
• Engine will not idle. See IDLE SPEED
under adjusting procedure.
• Engine dies or hesitates instead of
accelerating. See ACCELERATION
CHECK under adjusting procedure.
• Loss of power. See MIXTURE AD-
JUSTMENT (L or H) under adjusting
procedure.
There are three adjustment screws on
the carburetor. The low speed adjust-
ment screw is marked with the letter L,
and the high speed screw is marked
with the letter H. The third screw is the
idle speed screw.
Low Speed Idle Speed
Screw \ Screw
2,
H L
High Speed Screws with (¢£_)00L_)"_'_
Screw Limiter Caps
ADJUSTING PROCEDURE
CAUTION: Do not force plastic limiter
caps on screws beyond the built-in
stops or damage will occur.
-8-
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