Technical data

SECTION Q
MARINE ENGINE ELECTRICAL SYSTEM
ACTIVATION BY KEY SWITCH
This system is supplied on most Westerbeke engines beginning May, 1980. Essentially, activation of
the circuit is accomplished by the ignition position of the keyswitch. No oil pressure switch is required.
The engine is preheated by turning the keyswitch to the ON position, then depressing the key. The engine
is cranked by turning the keyswitch to the right-most momentary position.
Voltage is maintained to the instruments, fuel solenoid or fuel lift pump, if supplied, and to other
electrical devices via the ON position of the keyswitch.
Models which have a fuel solenoid may be turned off via the keyswitch. Models with mechanical fuel
lift pumps or no fuel solenoid are stopped by pulling a stop cable. Some models have a combined
throttle/shut-off control.
The circuit is protected by a circuit breaker located on the engine. Any time excessive current flows,
the circuit breaker will trip. This is a manual reset breaker which must be reset before the engine will
operate electrically again.
CAUTION: The builder/owner must ensure that the instrument panel, wiring and engine are installed
so that electrical devices cannot come in contact with sea water.
The latest information regarding your engine's electrical system is included on the wiring diagram
shipped with the engine. Be sure to study this wiring diagram and all notes thereon.