82
6 Maintenance
Coolant replacement
Every 1000 operating hours.
65 Filling the cooling system
• Remove the cap of the ller neck on the top
of the heat exchanger housing.
• Remove the bolt from the upper side of the
thermostat cover, so that air can escape
from the cooling system.
• Fill the cooling system.
Use a mixture of 40% antifreeze (ethylene-
glycol based) and 60% tap water or use a spe-
cial coolant.
For specications see page 129.
Coolant quantity:
litres Imp. pt US pt
M2 : 2.2 3.9 4.6
M3 : 3.0 5.3 6.3
M4 : 6.5 11.4 13.7
Caution
Never ll the cooling system with sea wa-
ter or brackish water.
note
For a keel-cooled version, see page 24.
If a water heater is connected, see page 26
and 27
17
VD00988
VD00987
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