Vetus M4.55 Operation Manual page 57

4 Maintenance
1
VD01147
52 Draining of coolant
Detach the hose to the oil coller (1) and
remove the drainplug from the heat
exchanger (2).
n
ote
Keel cooler
How the cooling system in engines with
keel cooling should be drained depends
on the installation of the keel cooler.
Refer to the keel cooler manufacturer's
PH2
VD01148
instructions for this.
Check using a coolant hydrometer
whether the coolant is providing suf-
ficient protection against freezing if total
draining off is not possible.
2
13
VD01131
Remove the filler cap to vent the cooling
system and check that all the coolant has
been drained.
After draining replace the drain plug.
Coolant replacement
Every 1000 operating hours.
55