Technical data

67
6 Maintenance
Coolant replacement
Every 1000 operating hours.
51 Draining of coolant
• Remove the drain plugs from the engine
block (1) and heat exchanger (2).
• Remove the ller cap to vent the cooling
system and check that all the coolant has
been drained.
• After draining replace the drain plugs.
note
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 in-
structions for this.
Check using a coolant hydrometer wheth-
er the coolant is providing sucient pro-
tection against freezing if total draining o
is not possible.
14 13
1
2
VD01018 VD01025