BENETEAU OCEANIS 31 Owner's Manual page 137

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NGINE
The engine winterization shall be carried out by a professional. Depending on the boat location, afloat or ashore, winterization is different.
Here are a few major tasks to carry out:
Afloat
- Drain the cooling system and fill it with antifreeze.
- Shut off the battery switches, grease the terminals and check the battery voltage.
- Fill the fuel tanks to a maximum in order to avoid condensation.
- Please refe to the engine manual for anything relating to the engine.
Ashore
- Take the batteries ashore and keep them on maintenance charge.
- Change the anode.
- Carry out the winterization operations specified by the manufacturer, keeping in mind that the freeze hazard is more significant when the boat is ashore.
- Slacken the a.c. generator and pump belts.
Winter Storage
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