Ride a few kilometres until warming engine up to regular operating temperature.
Place the gearbox in neutral.
Look at engine idle speed (rpm) on the rev counter.
Engine idling speed should be about 1250±100 rpm.
If needed:
Place the motorcycle on the stand.
Rotate the knob (1).
ROTATE CLOCKWISE to increase idling speed.
ROTATE ANTI-CLOCKWISE to decrease idling speed.
Flip the throttle twistgrip open and closed repeatedly to check for proper operation. Idling speed should remain stable.