28
Closed For Full
Choke
01679
TO ADJUST CHOKE CONTROL
The choke control has been preset at the
factory and ad just ment should not be nec-
essary. check adjustment as de scribed be-
low before loosening cable. If ad just ment
is necessary, proceed as follows:
1. With engine not running, move choke
control (located on dash panel) to full
choke position.
2. Remove air cleaner cover, fi lter and
cartridge plate to expose carburetor
choke (See “AIR FILTER” in the Main-
tenance section of this manual).
3. Choke should be closed. If it is not,
loosen casing clamp screw and move
choke cable until choke is completely
closed. Tighten casing clamp screw
se cure ly.
4. Reassemble air cleaner.
PRELIMINARY SETTING -
1. Be sure you have a clean air fi lter, and
the throttle control cable is adjusted
properly (see “TO ADJUST THROT TLE
CONTROL CABLE” in the Service and
Adjustments section of this manual).
2. With engine off turn idle fuel adjust-
ing needle
in
(clock wise) closing it
fi nger tight and then turn
out
(coun ter -
clock wise) 1 turn.
FINAL SETTING -
1. Start engine and allow to warm for fi ve
minutes. Make fi nal adjustments with
engine running and shift/mo tion control
lever in neutral (N) position.
NOTE:
The high idle is set at the factory
and cannot be adjusted.
2. Idle speed setting - With throttle control
lever in slow position, engine 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.
3. Idle fuel needle setting - With throttle
control lever in slow position, turn idle
fuel adjusting needle
in
(clock wise)
until engine speed decreases and then
turn
out
(coun ter clock wise) ap prox i-
mate ly 3/4 turn to obtain the best low
speed per for mance.
4. Recheck idle speed. Readjust if neces-
sary.
ACCELERATION TEST -
5. Move throttle control lever from slow
to fast position. If engine hesitates or
dies, turn idle fuel adjusting needle
out
(counterclockwise) 1/8 turn. Re peat
test and con tin ue to adjust, if neces-
sary, until engine ac cel er ates smooth ly.
High speed stop is factory adjusted. Do
not adjust-dam age 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 dan ger ous. If you think the
engine-governed high speed needs ad-
justing, contact a Sears or other qualifi ed
service center, which has proper equip-
ment and experience to make any neces-
sary adjustments.
TO ADJUST CARBURETOR
The carburetor has been present at the
factory and ad just ment should not be nec-
es sary. However, minor ad just ment may
be required to compensate for dif fer enc es
in fuel, temperature, altitude or load. If the
car bu re tor does need adjustment, proceed
as follows:
In general, turning the adjusting needles
in
(clockwise) de creas es the supply of
fuel to the engine giving a leaner fuel/air
mixture. Turning the adjusting needles
out
(coun ter clock wise) increases the supply
of fuel to the engine giving a richer fuel/air
mixture.
IMPORTANT:
Damage to the needles
and the seats in carburetor may result if
screw is turned in too tight.
