L
6-9
PERIODIC MAINTENANCE AND MINOR REPAIR
/home/Imai/imai_data/YMC-om/AB9239_RT100-26/English/E-6.frame
EAU00633
Idle speed adjustment
NOTE:
A diagnostic tachometer must be used
for this procedure.
1. Attach the tachometer. Start the
engine and warm it up for a few
minutes at approximately 1,000 to
2,000 r/min. Occasionally rev the
engine to 4,000 to 5,000 r/min.
The engine is warm when it quick-
ly responds to the throttle.
1. Throttle stop screw
2. Set the idle to the specified engine
speed by adjusting the throttle
stop screw. Turn the screw in di-
rection
a
to increase engine
speed and in direction
b
to de-
crease engine speed.
NOTE:
If the specified idle speed cannot be
obtained by performing the above ad-
justment, consult a Yamaha dealer.
Standard idle speed:
1,300 ~ 1,450 r/min
EAU00634
Throttle cable free play
adjustment
NOTE:
Before checking the throttle cable free
play, the engine idling speed should be
adjusted.
Adjust the throttle cable by turning the
adjusting nut so that specified free play
at the throttle grip is obtained.
Free play:
3 ~ 5 mm
