200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
Fig. 11 Control Plunger Stop Adjustment
d. Loosen the control plunger locknut slightly, and turn the center:
clockwise to increase clearance
counter-clockwise to decrease clearance, Fig. 9
1/4 turn of the stop screw equals approx. 1.3 mm (0.050 in).
5.
Re-install fuel distributor on air flow sensor and re-check free play.
6.
When re-installing fuel distributor, replace all seals and sealing rings.
7.
After adjusting the free play, recheck idle speed, and fuel mixture.