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Adjusting The Engine Idling Speed; Adjusting The Throttle Cable Free Play - YAMAHA NOUVO AT115 Owner's Manual

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PERIODIC MAINTENANCE AND MINOR REPAIR
Adjusting the engine idling
speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
NOTE:
_
A diagnostic tachometer is needed to
make this adjustment.
_
1. Attach the tachometer to the spark
plug lead.
6
2. Start the engine and warm it up
for several minutes at 1,000–
2,000 r/min while occasionally
revving it to 4,000–5,000 r/min.
NOTE:
_
The engine is warm when it quickly re-
sponds to the throttle.
_
EAU01168
1. Throttle stop screw
3. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the throttle stop
screw. To increase the engine
idling speed, turn the screw in di-
rection a. To decrease the engine
idling speed, turn the screw in di-
rection b.
Engine idling speed:
1,500–1,700 r/min
NOTE:
_
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
_
Adjusting the throttle cable
free play
The throttle cable free play should
measure 3–7 mm at the throttle grip.
Periodically check the throttle cable
free play and, if necessary, adjust it as
follows.
NOTE:
_
The engine idling speed must be cor-
rectly adjusted before checking and ad-
justing the throttle cable free play.
_
6-17
EAU00634*

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