Craftsman 917271660 17.0 HP, 42" Mower Electric Start Automatic Transmission Lawn Tractor

Owner's Manual - Page 28

For 917271660.

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screw. Tum idle speed screw to attain
1750 RPM.
3. While still holding throttle lever
against idle speed screw, turn idle
mixture valve full travel clockwise then
counterclockwise until engine runs
rough. Tum valve to a point midway
between those two positions. Re-
lease throttle lever.
ACCELERATION TEST -
4. Move throttle control lever from slow to
fast position. If engine hesitates or
dies, turn idle mixture valve out
(counterclockwise) 118 turn. Repeat
test and continue to adjust, if neces-
sary, until engine accelerates
smoothly.
High speed stop is factory adjusted. Do
not adjust or 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
equipment and experience to make any
necessary adjustments.
Idle Speed
S3"hrottle
Idle Mixture Valve _
with Limiter
28
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