Craftsman 917.272232 Owner's Manual page 28

Idle Fuel Adjusting Idle Speed
Needle Adjusting
Screw
Throttle
Control
3hoke
/ Cm'rol
Cable
Screw
TO ADJUST CHOKE CONTROL
The choke 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 choke
cantrol (located on dash panel} to full
choke position.
2. Remove air cleaner cover, filter and
cartridge plate to expose carburetor
choke (See "AIR FILTER" in the
Maintenance 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
securely.
4. Reassemble air cleaner.
Full Choke
TO ADJUST CARBURETOR
The carburetor has been present 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. Turning the adjusting needles out
(counterclockwise) increases the supply
of fuel to the engine giving a richer fuel/
IMPORTANT: Damage to the needles
and the seats in carburetor may result if
screw is turned in too tight.
PRELIMINARY SETI'IN G -
1. Be sure you have a clean air filter, and
the throttle control cable is adjusted
properly (see "TO ADJUST
THRO'I-rLE CONTROL CABLE" in the
Service and Adjustments section of
this manual).
2. With engine off tum idle fuel adjusting
needle In (clockwise) closing if finger
tight and then turn out (countemlock-
wise} 1 turn.
FINAL SE'r-rlNG -
1. Start engine and allow to warm for five
minutes. Make final adjustments with
engine running and shiWmotion
control lever in neutral (N) position.
NOTE: The high idle is set at the factory
and cannot be adjusted.
2. Idle soeed settina - With throttle
control lever in slow position, engine
should idle at 1200 RPM. If engine
idles too slow or fast, tam idle speed
adjusting screw in or out until correct
idle is attained.
3. Idle fuel needle settine - With throttle
control lever in slow position, turn idle
fuel adjusting needle In (clockwise)
until engine speed decreases and
then tam out (countemlockwise)
approximately 3/4 tam to obtain the
best low speed performance.
4. Recheck idle speed. Readjust if
necessary.
ACCELERATION TEST -
5. Move throttle control lever from slow to
fast position, If engine hesitates or
dies, tum idle fuel adjusting needle
out (counterclockwise) 1/8 turn.
Repeat test and continue to adjust, if
necessary, until engine accelerates
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-govemed high speed needs
adjusting, cordacta Sears or other qualified
service center, which has proper equip-
ment and expedanca to make any
necessary adjustments.
air mixture.
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