The generator is driven by the "V" belt from the crankshaft and is mounted upon a pivoted bracket for belt adjustment.

A large capacity, air-cooled, shunt-type generator with automatic cut out, current and voltage regulation is used. The output of the generator is controlled in relation to the voltage requirements, keeping the battery properly or adequately charged and maintaining proper voltage under normal conditions. This means that the ammeter hand may gradually approach zero, indicating that the battery requires less current at the time. Thus the voltage control feature of the generator prevents overcharging of the battery and because there is no excessive voltage, long life is assured for the electrical system.

Alterations in the generator charging rate should not be attempted except by a qualified automotive electrician.

The starting motor will require little attention except for regular lubrication of the armature shaft bearing. At 60 day intervals or 50 hours of operation apply a few drops of clean engine oil to the oil cup at the front of the starting motor.

The water level should not be allowed to fall below the top of the battery plates but maintained by the addition of distilled water at 3/a" to 1/2" above the plates. Hydrometer readings of battery fluid:

Fully charged          1.275 to 1.300

Half charged           1.225

Dangerously low     1.150

The freezing point of a discharged battery with 1.150 gravity is about 5° F. above zero, while a fully charged battery will not freeze at temperatures ordinarily encountered.

Keep the top of the battery clean. After scraping the terminals free from corrosion, coat them with a non-fluid lubricant to retard corrosion.

The trickle charger unit is provided to maintain the battery at the highest efficiency for easy starting. A five ampere 25 volt fuse is conveniently mounted on the front of the charger. No maintenance is required on the charger.

A 110 volt AC electric connection should be provided to operate the charger.

The connection should be disconnected at the socket before the engine is started.

ENGINE WATER JACKET HEATER

To insure quick starting in cold weather, a heating element has been installed in the water jacket on the left side of the engine.

This heater requires no maintenance attention other than in keeping it connected to a 110 volt AC electric line at all times when the Siren is not in use.

The plug in this connection should be removed from the socket before the engine is started.