41
Maintenance
WARNING!
Before any work is done on the electrical system, the engine must be stopped and the current
cut by the main switch. Battery chargers or other auxiliary equipment installed on the engine must be discon-
nected.
Electrical system
Fuses
Two fuses are delivered with the engine wire harness.
One 10 A to the EMS unit and one 150 A to the pre-
heat element. No other fuses are delivered with the
engine.
Fuses cut the current if the electrical system is over-
loaded.
If the engine cannot be started or if the instrument
panel stops working during operation, the fuse may
have blown. Check and replace fuses or re-set circuit
breakers.
IMPORTANT!
Always investigate the reason for
the overload!
Main switch
The main switch must never be switched off before
the engine has been stopped. If the circuit between
the alternator and the battery is broken when the en-
gine is running, the alternator can be damaged.
IMPORTANT!
Never disconnect the current with
the main switch when the engine is running.
Electrical connections
Check that electrical connections are dry, free from
oxide and that they are securely tightened. Spray
these connections as necessary with water-repellent
spray (Volvo Penta universal oil).
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