6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
8
9
b
a
1
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 approximate-
ly 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.
1.
Throttle stop screw
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.
NOTE:
If the specified idle speed cannot
be obtained by performing the
above adjustment, consult a
Yamaha dealer.
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.
1
2
3
b
a
1.
Adjusting nut
2.
Lock nut
3.
Free play
Standard idle speed:
1,300 ~ 1,400 r/min
3GX-9-33 (E) 12/10/07 11:17 AM Page 46
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