Throttle Control Cable - Craftsman 917.25545 Owner's Manual

SERVnCE AND ADJUSTMENTS
ACCELERATION TEST -
ENGINE
TO ADJUST THROTTLE CONTROL CABLE
(See Fig. 30)
The throttle control has been preset at the factory and
adjustment should not be necessary. Check adjustment as
described below before loosening cable_ If adjustment is
necessary, procede as follows:
o With engine not running, move throttle control lever
from "SLOW" to "CHOKE" position Slowly move lever
from "CHOKE" to "FAST" position_
o Check to see if hole in throttle lever and hole in speed
control bracket are aligned.
° 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,
• Pull throttle cable up to remove slack and tighten cable
clamp screw. Remove alignment pencil or drill bit,
TO ADJUST CARBURETOR (See Fig. 3'1)
]he carburetor has been preset at the factory and adjust-
ment should not be necessary. However, minor adjust-
ment may be required to compensate for differencesin 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 ad usting needles out (counter-
clockwise) 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 NEEDLE IS
TURNED IN TOO TIGHT
PRELIMINARY SETTING -,
. Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above)
= With engine off turn idle fuel adjusting needle in (clock-
wise) closing it finger tight and then turn out (counter-
clockwise) 1 turn.
FINAL SE'I-FING -
° Start engine and allow to warm for five minutes. Make
final adjustments with engine running and shift/motion
control lever in "NEUTRAL" position.
• Idle speed setting - With throttle control lever in"SLOW"
position, engine should idle at 1625 RPM If engine
idles too slow or fast, turn idle speed adjusting screw in
or out until correct idle is attained_
Idle fuel needle settinq - With throttle control lever in
"SLOW" position, turn idle fuel ad usting needle in
(c ockw se) unti eng ne beg ns to die and then turn out
(counterclockwise) approximately 1/8 to 1/4 turn to
obtain best low speed performance,
Recheck idle speed, Readjust if necessary,
° 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 continue to adjust, if necessary, until
engine accelerates smoothly.
High speed stop is factory adjusted Do not adjust -
damage may resulL
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY SET FOR PROPER
ENGINE SPEED. OVERSPEEDINGTHE ENGINE ABOVE
THE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS IFYOUTHINKTHEENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST SEARS SERVICE CENTER, WHICH HAS
PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY
NECESSARY ADJUSTMENTS
CABLECLAMPSCREW._
SPEEDCONTROLBRACKET_
THROTTLE LEVER
FIG. 30
IDLE SPEED ADJUSTING SCREW
IDLE FUEL ADJUSTING NEEDLE
FIG. 31
23