MERCEDES-BENZ Air Injection: Operation: Distributor

The centrifugal advance curve has been extended to the lower range. The spark advance at high RPM remains as before. At lower RPM the spark has been retarded. The vacuum adjustment remains unchanged in direction "advance" applicable at partial load. Adjustment: Basic ignition time is to be adjusted at n = 4500 RPM (without vacuum) by rotating the distributor. Centrifugal spark advance has to be checked at the specified RPM.