Sears 917.258552 Engine, To Adjust Throttle Control Cable, To Adjust Carburetor See Fig

SERVICE A ADJUSTMENTS

ENGINE

TO ADJUST THROTTLE CONTROL CABLE

(See Fig, 31)

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, proceed as follows:

. With engine not running, move throttle control lever from slow (_) to choke (IX) position. Slowly move lever from choke ([XI) to fast (,_) position,

=Oheck to see if hole in throttle lever and hole in speed control bracket are aligned.

.	If hetes	are not atigned, 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.

ACCELERATION TEST -

Move throttle control lever from stow (,,_m.)to fast (,_) positior_. If er_gine hesitates or dies, turn idte fuet

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 result.

IMPORTANT: NEVER TAMPER WITH THE Er4GINE

GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE

THE FACTORY HiGH SPEED SETTING CAN BE

DANGEROUS. 1F YOU THINKTHE ENGINE-GOVERNED

HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR

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

EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

CABLE CLAMP

SCREW

TO ADJUST CARBURETOR (See Fig, 32)

The carburetor has been preset at the factory and adjust- ment should not be necessary. However, minor adjust- ment may be required to compensate for differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, proceed as follows:

tn 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 (counter-

clockwise) increases the supply of fuel to the engine giving a richer fueVair mixture.

f,MPGRTANT: DAMAGE TO THE NEEDLES AND THE SEATS IN CARBURETOR MAY RESULT IF NEEDLE IS TURNED IN TOO TIGHT.

NOTE: The carburetor on this engine is tow emission. It is equipped with an idle fuel adjusting needte with a limiter cap, which allows some adjustmentwithin the limits allowed by the cap. Do not attempt to remove the limiter cap. The ]!miter cap cannot be removed without breaking the adjusting needle.

=Be sure you have a clean air fiiter and the throttle control cable is adjusted properly (see above).

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

•Idle _peed settit_ - With throttJe control lever in slow (,glb) position, engine should idle at 1750 RPM. If engine idles too slew or fast, turn idle speed adjusting screw Jnor out until correct idle is attained.

=Idle fue! need_ - With throttle control lever in slow (,ak,) position, turn idle fuel adjustment needle in (clockwise) until engine begins to die and then turn out (counterclockwise) untii engine runs rough. Turn needle to a point midway between those two positions.

• Recheck idle speed. Readjust if necessary.

SPEED CONTROL

BRACKET

THROTTLE

LEVER

FIG. 31

IDLE SPEED

ADJUSTING

SCREW _-"-'_-_'_"_"-_-'--'-1_ "

IDLE FUEL /' ; -" 1

FIG, 32

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