Acceleration Test - Craftsman 917.275021 Owner's Manual

23.0 hp electric start 48" mower automatic garden tractor
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NOTE: The high idle is set at the factory
and cannot be adjusted.
2.
Idle seeed settina - 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.
3. Idle fuel needle settina - 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.
4.
Recheck idle speed. Readjust
if
necessary.
ACCELERATION
TEST -
5. Move throttle control lever from slow to
fast position.
If engine hesitates or
dies, tum 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
engine governor, which is factory set for
proper engine speed. Overspeeding
the
engine above the factory high speed
setting can be dangerous.
If you think the
engine-governed
high speed
needs
adjusting,
contact a Sears or other qualified
service center, which has proper equip-
ment and experience to make any
necessary adjustments.
31

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