28
Idle Speed
Adjusting
Screw
Idle Fuel
Adjusting
Needle
00831
Throttle Lever
ENGINE
Maintenance, repair, or replacement of
the emission con trol devices and sys tems,
which are being done at the cus tom ers ex-
pense, may be performed by any non-road
engine repair es tab lish ment or individual.
Warranty repairs must be per formed by an
authorized engine man u fac tur er's service
outlet.
TO AD JUST THROTTLE CON TROL
CABLE
The throttle control has been preset at the
factory and adjustment should not be nec-
essary. Check adjustment as de scribed
below before loosening cable. If adjust-
ment is necessary, proceed as follows:
1. With engine not running, move throttle
control lever from slow to choke posi-
tion. 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. Re-
move alignment pencil or drill bit.
TO ADJUST CARBURETOR
The carburetor has been preset at the
factory and ad just ment should not be nec-
essary. However, minor ad just ment may
be required to compensate for differences
in fuel, tem per a ture, altitude or load. If the
carburetor does need adjustment, proceed
as follows:
In general, turning the adjusting needles
in
(clock wise) de creases the supply of
fuel to the engine giving a leaner fuel/air
mixture. Turning the adjusting needles
out
(counter clock wise) 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 al lowed by the cap. Do not attempt
to remove the limiter cap. The limiter cap
cannot be removed without breaking the
adjusting needle.
1. Be sure you have a clean air fi lter and
the throttle control cable is adjusted
properly (see above).
2. Start engine and allow to warm for fi ve
minutes. Make adjustments with engine
running and shift/motion con trol lever
in neutral (N) position.
3. Idle speed setting - With throttle control
lever in slow position, en gine should
idle at 1750 RPM. If engine idles too
slow or fast, turn idle speed adjusting
screw in or out until correct idle is at-
tained.
4. Idle fuel needle setting - With throttle
control lever in slow po si tion, turn idle
fuel adjustment needle
in
(clock wise)
until engine begins to die and then turn
out
(coun ter clock wise) until engine
runs rough. Turn nee dle to a point
midway be tween those two positions.
5. Recheck idle speed. Readjust if nec-
es sary.
ACCELERATION TEST -
6. Move throttle control lever from slow
to fast position. If engine hesitates or
dies, turn idle fuel adjusting needle
out
(coun ter clock wise) 1/8 turn. Re peat
test and con tin ue to adjust, if neces-
sary, until engine ac cel er ates 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. Overspeed-
ing the engine above the factory high
speed setting can be dan ger ous. If you
think the engine-governed high speed
needs adjusting, contact a Sears or other
qualifi ed service center, which has proper
equip ment and experience to make any
nec es sary adjustments.
Cable
Clamp
Screw
Speed Control
Bracket
