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ENGINE
Maintenance, repair, or replacement of
the emission control devices and sys-
tems, which are being done at the
customers expense, may be performed
by any non-read engine repair establish-
ment or individual. Warranty repairs must
be performed by an authedzed engine
manufacturer's service outlet.
TO ADJUST THROTTLE CONTROL
CABLE
The throttle control has been preset at the
factory and adjustment should not be
necessary. Check adjustment as de-
scribed below before loosening cable. If
adjustment is necessary, proceed as
follows:
1. With engine not running, move throttle
control lever from slow to choke
position. Slowly move lever from
choke to fast position.
2. Check to see if hole in throttle lever
and hole in speed control bracket are
aligned.
3. If holes are not aligned, loosen cable
clamp screw and align the holes by
inserting a pencil or a 1/4" drill bit
through both holes.
4. Pull throttle cable up to remove slack
and tighten cable clamp screw.
Remove alignment pencil or drill bit.
TO ADJUST CARBURETOR
The carburetor has been preset at the
factory and adjustment should not be
necessary. However, minor adjustment
may be required to compensate for
differences in fuel, temperature, altitude
or load. If the carburetor does need
'
adjustment, proceed as follows:
In general, turning the adjusting needles
In (clockwise) decreases the supply of
fuel to the engine giving a leaner fuel/air
mixture. Tuming the adjusting needles out
(counterclockwise) increases the supply
of fuel to the engine giving a richer fuel/
air mixture.
IMPORTANT: Damage to the needles
and seats in carburetor may result if
turned in too tight.
NOTE: The carburetor on this engine is
low emission. It is equipped with an idle
fuel adjusting needle with a limiter cap,
which allows some adjustment within the
limits allowed by the cap. Do not attempt
to remove the limiter cap. The limiter cap
cannot be removed without breaking the
adjusting needle.
26
1. Be sum youhavea dean ek fitierandthe
throtUecontrolcable is adjustedproperly
(seeabove).
2. Startengine and anowfa warm for five
minutes. Make adjustments with engine
runningand shiifhneiine cotWollever in
neutral(N) l_Sition.
3. Idle seeed s_
- Wilh lhrolfie ocotml
kwer in slow pe.._on, engine sheuld idfa
at 1750 RPM. If engineidlestooslowor
fast, turn idis speed adjustbgscrewk_or
out un_lcolrect idleis attained.
4. _
- W_h throttle
central isvor in #
_,
turn idle fuel
a_us'lme_ needleIn (_)
unUl
engk;e beginsto die erbdthen turnout
(ceunterdeskv_ise) untilengine runs
rough.Turn needleto a pointmidway
between thosetwo pesi_ons.
5. Recheckidle speed. Readjustif neces-
sa_.
ACCELERATIONTEST-
6. MovethretUe control leverfloraslow to
fast position. I f enginehesitatesor dies,
tom idlefuela<_usting neadleout
(counterdod_L_)
1/8 turn. Repeat test
and cenSnceto ac_st, If necessary,until
engine _r_emtes
smoothly.
High speed stop is factory adjusted. Do
not adjust - damage may result.
IMPORTANT: Never tamper with the
engine governor, which is factory set for
proper engine speed. Overspeeding the
engine above the factory high speed
setting can be dangerous. If you think the
engine-governed high speed needs
adjusting, contact a Sears or other
qualified service center, which has proper
equipment and exbedence to make any
necessary adjustments.
Cable
Clamp
Screw
_Speed
Control
"
--
I nrottle
Lever
Idle Speed
Adjusting-_..__ _
Screw
Idle Fuel
Adjusting -I"
Needle
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