Volvo Penta D4 Series Operator's Manual page 94

Maintenance
92
Electrical System
The engine is equipped with a 2-pole electrical system
and an alternator. System voltage is 12V or 24V.
WARNING!
Always stop the engine and break the current using the
main switches before working on the engine.
Fuses
12–volt system (engine)
The engine is fitted with automatic circuit breakers. The
circuit breakers cut the power if the system is over-
loaded.
If it is not possible to start the engine or if the instrument
stops working while running, the circuit breaker may
have been activated.
Resetting will take place automatically.
24–volt system (engine)
The engine is fitted with two automatic circuit breakers
(1). The circuit breakers cut the power if the system is
overloaded. If it is not possible to start the engine or if
the instrument stops working while running, the circuit
breaker may have been activated. Reset by pressing
in the circuit breakers (1).
IMPORTANT!
Always investigate the cause of the overload. If the
fuse trips frequently, contact an authorized Volvo
Penta workshop.
47702599 12-2011