Nanni T4.205 Operator's Manual page 48

Marine engine
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Coolant level
I DANGER
Never open the coolant filler cap
or any plug of the cooling system
when the engine is operating
or warm. Steam or hot fluid can
spray out.
Always check the coolant level
before starting the engine.
1. Stop the engine and remove
the key from the panel.
2. Turn the coolant filler cap
slowly to the first stop and let any
pressure escape from the sys-
tem. Remove the cap.
3. Coolant level should lie be-
tween the filler neck lower edge
and the level spur.
4. Top-up using clean water only.
5. Reinstall the coolant filler cap.
6. Check the coolant level in the
recovery tank (if fitted). It should
lie between the Min and Max
mark of the recovery tank. Add
clean water if necessary.
45
NOTICE: The Min and Max level
indicated on the recovery tank (if
fitted) does not indicate the correct
level of coolant.
Draining the coolant
circuit
1. Stop the engine and remove
the key from the panel.
2. Put a container under the drain
plug
to collect coolant. Un-
screw the plug and remove the
filler cap.
3. Drain off all coolant. Drain off
the recovery tank and the hoses.
4. Insert a hose into the heat
exchanger filler port . Rinse with
fresh water until water which
flows from the drain port is clean.
5. Reinstall the drain plug and fill
with coolant to the correct level.

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