Sears 917.25049 To Adjust Throttle Control Cable See Figs, 34, To Adjust Carburetor See Fig

SERVmCE AN ADJUSTMENTS

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ENGINE

TO ADJUST THROTTLE CONTROL CABLE (See Figs, 34 & 35)

The throttle control has been preset at the factory and adjustment should notbe necessary.. Checkadjustment as described below before loosening cable. If adjustment is necessary, proceed as follows:

oWith engine not running, move throttle control lever to fast (,_) position°

,Checkthat speed control lever is against stop screw, if it is not, loosen casing clamp screw and put! throttle cable until lever is against screw. Tighten clamp screw securely.

TO ADJUST CARBURETOR (See Fig. 36)

The carburetor has been preset at the factory and adjust_ merit 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 fueVair mixture. Turning the adjusting needles out (coun- tercleckwise) 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 {S

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) 1o114turns.

°Turn main fuel adjusting needle in (clockwise) closing fingertight and then turn out (counterclockwise) 1turn

FINAL SETTING -

=Start engine and allow to warm for five minutes° Make final adjustments with engine running and shift/motion control lever in neutral (N) position.

=With throttle control lever infast (,t_) position, turn main fuel adjusting needle in (clockwise) until engine begins to die then turn out (counterclockwise) until engine runs rough° Turn needle to a point midway between those two positions.

°Idle sDee.dsetting - With throttle control lever in slow (,,_) position, engine should idle at 1400 RPM If engine idles too slow or fast, turn idle speed adjusting screw in or out until correct idle is attained..

. Idle fuel needle setting - With throttle control lever in slow (,,€_) position, turn idle fuel adjusting needle in (clockwise) until engine begins to die and then turn out (counterclockwise) until engine runs rough. Turn needle to a point midway between those two positions.

oRecheck idle speed. Readjust if necessary.

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ACCELERATIONTEST-

oMove 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, if necessary, until engine acceler- ates smoothtyo

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. OVERSPEEDLNG THE ENGINE ABOVE

THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED

HLGH SPEED NEEDS ADJUSTING, CONTACT YOUR

NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND

EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS..

CASING	STOP SCREW	SPEED CONTROL
		LEVER

THROTTLE

CONTROL

CABLE

FIG. 34

STOP

SCREW

SPEED

CONTROL

LEVER

FIG. 35

IDLE SPEED o_ _ IDLEFUEL

27 FIG. 36