Idle Speed Adjustment - Yamaha BIG BEAR YFM400FPP Owner's Manual

1. Throttle stop screw
1. Vis d'arrêt de l'accélérateur
1. Tornillo de tope del acelerador

Idle speed adjustment

NOTE:
A diagnostic tachometer must be used for this pro-
cedure.
1. Start the engine and warm it up for a few min-
utes 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 in-
crease engine speed, and out to decrease
engine speed.
Specified idle speed:
1,350 ~ 1,450 r/min
8-51
EBU00301