Vetus D-LINE VD4.120 Operation Manual page 73

6 Maintenance
1 1
53 Draining of coolant
• Remove the drain plug from the heat ex-
changer housing (1).
18
• Remove the filler cap to bleed the cooling
system and check that all the fluid is run-
ning out.
• Refit the drain plug after all the liquid has
run out.
Coolant replacement
Every 2000 operating hours.
N.B. A small part of the coolant will remain
in the engine block.
• If necessary, remove the drain plug (2) from
the engine block to fully drain the engine.
2
19
71