Seawater System, Cleaning and
Inhibiting
The raw water system must be flushed with fresh
water, to prevent deposits and salt crystals from build-
ing up inside it. The system must also be conserved
when the boat is laid up for winter or out-of-season
storage so that it is protected from internal corrosion.
WARNING!
Risk of water penetration.
Cleaning and inhibiting the seawater system should be
carried out with the boat on land.
WARNING!
Working with or going close to a running engine is a
safety risk. Watch out for rotating components and hot
surfaces.
1 Open the sea cock (1).
2 Remove the hose from the sea cock (1) or from the
outlet side of the raw water filter (2) if such is fitted
to the engine.
3 Put the free end of the hose into a bucket of fresh-
water. Proceed with refilling.
IMPORTANT!
The impeller will be damaged if it is run dry.
4 Check that there is no one in the vicinity of the pro-
peller and that nothing risks being spattered by the
exhaust outlet.
5 Set the control lever to neutral and start the engine.
Let it run at fast idle for a few minutes. Stop the
engine.
6 Fill the bucket with an antifreeze solution (40%
Volvo Penta Coolant and 60% freshwater) and
arrange for the collection of the solution throughput.
7 Start the engine and let it idle. Stop the engine just
before the mixture is depleted. Repeat until the
entire system has been flushed with the mixture.
8 Reconnect the removed hose.
9 The system is now conserved. The glycol mixture
should remain in the system during storage.
Before launching the boat, drain the mixture and
hand it to a re-cycling station.
Maintenance
50 47702088 05-2011
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