Idle Speed Adjustment - Yamaha BIG BEAR 4X4 Owner's Manual

EBU00301

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 and set the idle
to the specified idling speed by adjusting
the throttle stop screw. Turn the screw in
to increase engine speed, and out to de-
crease engine speed.
Specified idle speed:
1,450–1,550 r/min
1. Throttle stop screw
8-19