Craftsman 917.256544 - Manual (Page 25)

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In genera!, turning the adjusting needles in (clockwise)
decreases the supply cl iuel to the erìgine giving a leaner
fuel/air mixture. Turning tne adjusting needles out (counter­
clockwise) increases the supply of fuel to the engine giving
a richer fuei/air mixture,
iMPORTANT: DAMAGE TO TltE NEEDLES .AND THE
SEATS IN CARBURETOR MAY RESULT IF NEEDLE IS
TURNED IN TOO TIGHT.
l‘•lCУrE: The carburetor on this engine is low emission, it is
equipped with an idle fuel adjusting needle with a Simiter
cap, which allows some adjustment within the limits allowed
by ihe cap. Do not attempt to remove the limiter cap. Ths
iimiter cap cannot be removed without breaking the adiusiirig
needle,
* Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above).
* Star!: engine and allow to ‘warm for five minijtes. Make
.adjustments with engine running and shift'motion control
lever in neutral (N) position.
* idle speed setting - With throttle control lever in slov»'
i‘m) position, engine should idle at 1750 RPM. It
engirfO ¡dies too slow or fast, turn idle speed adjusting
screw in or out until correct idle is attained.
^
« Idle fuel needle setting - With throttle control fever in
slow (•«») position, turn idle fuei adjustment needle in
(clockwise) until engine begins to die and then turo out
(counterclockwise) until engine runs rough. Turn neeclle
to a point midway between those two positions.
® Recheck idle speed. Readjust if necessary.
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Fie. 32
FIS. 33
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