Yamaha LIT-11626-16-09 Offroad Vehicle User Manual


 
8-23
EBU01143
Idle speed adjustment
NOTE:
_
A diagnostic tachometer must be used for this
procedure.
_
1. 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 quickly responds to the
throttle.
2. Connect the tachometer to the spark plug
lead, and then set the idle to the specified
idling speed by adjusting the throttle stop
screw. Turn the screw in direction
a
to
increase the engine speed, and in direc-
tion
b
to decrease the engine speed.
1. Throttle stop screw
Specified idle speed:
1,4501,550 r/min
U5LP12.book Page 23 Friday, April 26, 2002 2:47 PM