Volvo Penta D3 Operator's Manual page 101

Maintenance
Stray Current
IMPORTANT!
Leakage currents increase the consumption of catho-
dic protection on hulls and stemdrives, which can
cause severe corrosion in a short period of time.
Clean around the alternator regularly; see figure. For
boats with aluminum or carbon fiber hulls, it is impor-
tant to be extra vigilant so that the boat's electrical sys-
tem remains undamaged and that stray currentscan-
not arise due to deposits of salt or dirt at the alternator
mountings.
An aluminum hull and stemdrive can quickly be dam-
aged by stray currents in the water and carbon fiber
hulls serve as good conductors of currents. Also refer
to Electrical Installations page 102.
Relays
The engine has four relays. If the engine. If it is not
possible to start a relay can be broken and need to be
changed.
1 Main relay
2 Fuel pump relay
3 External stop relay
4 Starter relay
Electrical Connections
Check that electrical connections are dry, free from
oxide, and that they are securely tightened.
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