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ENGINE
Maintenance, repair,or replacement ofthe
emissioncontroldevices and systems, which
are being done at the customersexpense,
may be performed by any non-road engine
repair establishment or individual. Warranty
repairs must be performed by an authonzed
engine manufectureCs service outlet.
TO ADJUST THROTTLE CONTROL
CABLE
The throttlecontrolhas been presetat the
factory and adjustmentshould not be
necessary. Check adjustment as described
below before loosening cable. Ifadjustment 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 ifhole 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 bitthrough
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, tuming the adjusting needles in
(clockwise) decreases the supply of fuel to
the engine giving a leanerfueVair mixture.
Tumingthe adjustingneedles out (counter-
clsekwise) increasesthe supplyoffuel to the
engine giving a ricberfueVair mixture.
IMPORTANT: Damage to the needles and
seats incarburetormay resultifturnedin too
tight.
NOTE: The carburetoron thisengine islow
emission,it isequippedwithan idlefuel
adjusting needle with a limitercap, which
allows some adjustmentwithinthe limits
allowed by the cap. Do notattemptto remove
the limitercap.The limitercap cannot be
removed withoutbreaking the adjusting
needle.
1. Be sure you have a clean airfilter and the
throttlecontrolcable is adjustedproperty
(see above).
2. Start engine and allow to warm for five
minutes. Make adjustments with engine
running and shift/motion control lever in
neutral (N) position.
3. Idle seeed setting - With throttle control
lever in slow position, engine should idle
at 1750 RPM. Ifengine idles too slow or
fast, tum idle speed adjusting screw in or
out until correct idle isattained.
4. Idlefuel needle setting - With throttle
controlleverin slowposition,turn idlefuel
adjustmentneedle in (clockwise)until
engine beginsto die and then tum out
(counterclockwise)until engine runs
rough.Turn needle to a pointmidway
between thosetwo positions.
5. Recheck idlespeed. Readjustif neces-
sary.
ACCELERATION TEST -
6. Move throttlecontrolleverfromslowto
fast position. Ifengine hesitates or dies,
turnidlefuel adjustingneedle out
(counterclockwise)1/8 turn. Repeat test
and continueto adjust,if necessary, until
engine accelerates smoothly.
High speed stop is factory adjusted. Do
notadjust - 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 experience to make any
necessary adjustments.
srPecedetC_
ver
IdleSpeed
Adjusting_,,f_ I
26
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