b
1. Throttle stop screw
Idle speed adjustment
1. Start the engine and warm it up
for a few minutes at approxi-
mately 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 quickly responds
to the throttle.
2. Set the idle to the specified
engine speed by adjusting the
throttle stop screw. Turn the
screw in direction a to increase
engine speed and in direction b
to decrease engine speed.
PERIODIC MAINTENANCE AND MINOR REPAIR
Standard idle speed:
1,200 ~ 1,400 r/min
(Except for CH)
1,300 ~ 1,400 r/min
a
(For CH)
NOTE:
1
If the specified idle speed cannot be
obtained by performing the above
adjustment, consult a Yamaha deal-
EAU00632
er.
a. Free play
Throttle cable free play
inspection
There should be a free play of 3 ~
5 mm at the throttle grip. If the free
play is incorrect, ask a Yamaha deal-
er to make this adjustment.
6-14
1
2
a
3
4
EAU00635
5
6
7
8
9