Craftsman 917.258911 To Adjust Choke Control See Figs, To Adjust Carburetor See Fig, Adjustments

IDLE FUEL

ADJUSTING IDLE SPEED

NEEDLE

SCREW

THROTTLE

CONTROL

CABLE

CHOKE

CONTROL

CABLE

STOPCLAI

SCREW

SCREW

FIG. 34

TO ADJUST CHOKE CONTROL (See Figs. 34 and 35)

The choke control has been preset at the factory and

adjustment should not be necessary, check adjustment as described below before loosening cabie_ If adjustment is

necessary, proceed as follows:

•With engine not running, move choke control (located on dash panel) to full choke position.

-Remove air cleaner cover, filter and cartridge plate to

expose carburetor choke (See "AIR FILTER" in the Customer Responsibilities section of thfs manual)_

oChoke should be closed. If it is not, loosen casing clamp screw and move choke cable until choke is

coml_letely closed. Tighten casing clamp screw se- curely,.

°Reassemble air cleaner.

CLOSED FOR

FIG, 35

TO ADJUST CARBURETOR (See Fig. 34)

The carburetor has been present at the factory and adjust_ ment should not be necessary_ However, minor adjustment may be required to compensate for differences in [uel, temperature, altitude or Ioado If the carburetor does need adjustment, proceed as follows:

in general, turning the adjusting needles in (clockwise) decreases the supply of fuel to the enginegiving a leaner

fuel/air mixture° Turning the adjusting needles out (coun- terclockwise) 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 IS TURNED IN TOO TIGHT

PRELIMINARY SETTING -

•Be sure you have a clean air filter, and the throttle

control cable is adjusted properly (see 'q'O ADJUST THROTTLE CONTROL CABLE" in the Service and Adjustments section of this manual)..

- With engine off turn idle fuel adjusting needle in (clock- wise) closing itfinger tight and then turn out (counter- clockwise) 1 turn°

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.

°The high idle is set at the factory and cannot be adjusted°

=Idle speed setting - With throttle control lever in slow position, engine should idle at 1200 RPM. If engine

idles too slow or fast, turn idle speed adjusting screw in or out until correct idle is attained.

-idle fuel nee,die setting - With throttle control lever in slow position,turn idle fuel adjusting needle in (clock- wise) until engine speed decreases and then turn out (counterclockwise) approximately 3/4 turn to obtain the best low speed performance_

•Recheck idle speed. Readjust if necessary.

ACCELERATION TEST -

°Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idlefuel adiusting needle out (counterclockwise) 1/8 turn,. Repeat test and con- tinue to adjust, if necessary, until engine accelerates smoothly.

High speed stop isfactory adjusted. Do not adjust-damage may result°

IMPORTANT: NEVER TAMPER WITH THE ENGINE

GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED.. OVERSPEED1NG 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°

27 J