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... MAINTENANCE IGNITION SYSTEM A 12-volt battery provides the current necessary to operate the '^'-ignition system. A high voltage is induced by the coil, and the distributor, as its name implies, distributes this voltage to the sparking plugs in the correct firing sequence. Distributor: The DM2 type Lucas distributor is fitted with an automatic timing control operated by centrifugal force together with a vacuum timing control operated by the depression in the engine induction manifold. The combined effects of the two controls gives added efficiency over the full engine operating range, with a corresponding economy in fuel consumption. A micrometer adjuster is also provided in order that fine adjustments to timing may be made to allow for changes in running conditions, e.g. state of carbonisation, change of fuel, etc. To gain access to the distributor contacts for cleaning and re facing, first remove the distributor cover and rotor arm. Next, unscrew the nut on the terminal post, lift off the spring and remove the contact adjusting screw ‘1’, after which both contacts may be removed. Examine the contacts, which must be free from grease or oil. If they are burned or blackened, clean them with a very fine carborundum stone or with very fine emery cloth. Afterwards wipe away any trace of dirt or metal dust with a petrol moistened cloth. ...