Adirty airfilter d ecreases
engine per-
formance
and increases
fuel consump-
tion and harmful emissions.
Always
clean a fter e very 5 hours o foperation.
1.Clean t he cover and the area
around ittokeep debris from falling
into the carburetor
chamber when
the cover isremoved.
2.Remove parts a sillustrated.
NOTE: Toavoid c reating afire hazard
orproducing
harmful evaporative
emis-
sions, donot c lean f ilter i ngasoline or
other flammable
solvent.
3.Wash t he filter i nsoap a nd water.
4.Allow filter t odry.
5.Add afew drops o foil t othe filter;
squeeze filter t odistribute
oil.
6.Replace parts.
REPLACE
SPARK PLUG
Replace spark p lug each year toen-
sure the engine starts e asier and runs
better. Set s park p lug gap at0.025 i n.
Ignition timing i sfixed, nonadjustable.
1.Twist, then pull o ffspark p lug boot.
2.Remove spark p lug f rom cylinder
and discard.
3.Replace with Champion
RCJ-8Y
spark p lug and tighten with a3/4 in.
socket wrench (10-12 ft.-Ibs).
4.Reinstall the spark p lug boot.
REPLACE
FUEL F ILTER
To replace fuel filter, drain u nit b yrun-
ning itdry offuel, then remove fuel cap/
retainer assembly
from tank. Pull filter
from tank and remove itfrom the fuel
line. I nstall new fuel filter o nfuel l ine;
reinstall parts.
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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