Craftsman 917273061 50" MOWER AUTOMATIC GARDEN TRACTOR

Owner's Manual - Page 30

For 917273061.

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In general, turning the adjusting needles
In (clockwise) decreases the supply of
fuel to the engine giving a leaner fuel/air
mixture. Turning the adjusting needles
out (counterclockwise) 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.
Closed for Full
Chok_
ACCELERATION TEST -
Move throttle control lever from slow to
fast position. If engine hesitates or
dies, turn idle fuel adjusting needle
out (counterclockwise) 1/8 turn.
Repeat 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
eninge governor, which is factory set for
proper engine speed. Overspeeding the
engine above the factory high speed
eettng can be dangerous. If you think the
engine-governed high speed needs
adjusting, contact your nearest autho-
rized service center/department, which
has proper equipment and experience to
make any necessary adjustments.
PRELIMINARY SETrlNG -
Be sure you have a clean air filter, and
the throttle control cable is adjusted
properly (see 'TO ADJUST
THRO]-I'LE CONTROL CABLE" in the
Service and Adjustments section of
this manual).
With engine off turn idle fuel adjusting
needle in (clockwise) closing it finger
tight and then turn out (counterclock-
wise) 1 turn.
FINAL SETFING -
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 soeed 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 needle setting - With throttle
control lever in slow position, turn idle
fuel adjusting needle in (clockwise)
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.
3O
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