Operation CHARM: Car repair manuals for everyone.

M1 Basic Setting of Throttle Butterfly

Basic setting of throttle butterfly, LH 2.2

1 Make sure that the butterfly is mounted centrally in the throttle body.

2 Screw in the adjusting screw until it touches the stop (butterfly fully closed).

3 Turn the adjusting screw a further 1/3 turn and secure it in this position with a locknut. This will ensure a clearance between butterfly and throttle body of approx. 0.05 mm (0.002 in).

4 Check that the length of the throttle cable does not prevent the butterfly from reaching the idling speed position, and that there is no play at the accelerator pedal.

5 Check that the butterfly opens fully when the accelerator is floored.

Check and adjust the throttle position sensor.