Throttle Control Cable - Craftsman 3One 917.257562 Owner's Manual

SERVICE AND ADJUSTMENTS
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TO ADJUST CARBURETOR
(See Figs. 32 and 33)
The carburetor has been preset at the factory and adjust-
ment should not be necessary. However, minor adjust-
rnent 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 mixture screw in (clockwise) de-
creases the supply of fuel to the engine giving a leaner fuel/
air mixture. Turning the mixture screw out (counterclock-
wise) increases the supply of fuel to the engine giving a
dcher fuel/air mixture+
IMPORTANT: DAMAGE TO THE NEEDLES AND THE
SEATS IN CARBURETOR MAY RESULT IF SCREW IS
TURNED IN TOO TIGHT,
PRELIMINARY SETTING -
• Be sure you have a cJean air filter, and the throttle
control cable and choke are adjusted properly (see
above).
• With engine off turn idle mixture screw in (clockwise)
closing it finger tight and then turn out (counterclock-
wise) 1-1/4 to 1-1/2 turns+
FINAL SETTING -
• Start engine and allow to warmfor five minutes+ Make
final adjustments with engine running and shift/motion
control lever in neutral (N) position°
• With throttle control lever in stow (-m_) position, hold
throttle lever against idle speed screw and adjust idle
speed screw to obtain 1200 to 1400 RPM
• While still holding throttle lever against idle speed
screw, turn idle mixture screw in (clockwise) until
engine begins to die and then turn out (counterclock-
wise) until engine runs rough. Turn screw to a point
midway between those two positions.
• Continue to hold throttle lever against idte speed screw
and adjust idle speed screw to obtain900 to 1200 RPM
Release throttle lever:
ACCELERATION TEST-
Move throttle control lever from slow (-€_) to fast (,_)
position, if engine hesitates or dies, turn idle mixture
screw out (counterclockwise) 1/8 turn. Repeat test
and cont}nue to adjust, ifnecessary, until engine accel-
erates 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, tF YOU THINK THE ENGINE+GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND
EXPERIENCE TO MAKE ANY NECESSARY
ADJUSTMENTS
IDLE SPEED
SCREW
IDLE MIXTURE
SCREW
THROTTLE
LEVER
FIG. 32
LEVER SCREW
FIG, 33
24