Adjusting the Interrupter:
With the fibre lever in the center of one of the embossed cams, as at [Fig. 65], the opening between the platinum contacts should be not less than .016′′ and not more than .020′′. The gauge riveted to the adjusting wrench should barely be able to pass between the contacts when fully open. The platinum contacts must be smoothed off with a very fine file. When in closed position, the platinum contacts should make contact with each other over their entire surfaces.
Fig. 65.—The Berling Magneto Breaker Box Showing Contact Points Separated and Interruptor Lever on Cam.
When inspecting the interrupter, make sure that the ground brush in the back of the interrupter base is making good contact with the surface on which it rubs.
Cleaning the Distributor:
The distributor block cover should be removed for inspection every twenty-five hours of actual running and the carbon deposit from the distributor finger-brush wiped off the distributor block by rubbing with a rag or piece of waste dipped in gasoline or kerosene. The high-tension terminal brush on the side of the magneto should also be carefully inspected for proper tension.
LOCATING TROUBLE
Trouble in the ignition system is indicated by the motor “missing,” stopping entirely, or by inability to start.