Press in spring keeper of multi-pin plug for throttle-valve potentiometer (1) and disconnect plug.
Note: Do not remove throttle-valve potentiometer unless due for replacement (basic setting is necessary — see Motronic diagnosis instructions).
Remove screws (2).
Remove holder (3) with fuel line and injector.
Remove fuel injector, if necessary.
Press in the spring catch at the injector plug and pull off the plug.
Remove locking device (4) from the injector.
Slacken hose clamps.
Push intake neck into air filter box and remove throttle-valve stub.
Disengage throttle cables (5) from right and left throttle-valve stubs.
Installation is the reverse of the removal procedure.
Caution! Make sure that O-ring (6) on throttle-valve stub is in perfect condition.
Adjusting speed increase, idle speed and synchronisation.