When Problems Occur - Vetus M4.55 Operation Manual

1 Safety measures
• When the engine stops suddenly:
If the engine stops suddenly, do not
start it again immediately. Track down
the cause and carry out the necessary
repairs before you start the engine
again. If you do not do this, serious
engine problems can develop.
• If the oil pressure is too low:
Stop the engine immediately and check
the lubrication system. Running an
engine with low oil pressure can cause
bearing and other parts to seize.
8
• lf the engine overheats:
If the engine should overheat, do not
switch it off immediately. If an overheat-
ed engine is stopped suddenly, this can
cause the coolant temperature to rise
rapidly and moving parts to seize. First
let the engine run in neutral to allow the
hot parts of the engine to cool down,
stop the engine and allow it to cool,
and then gradually top up the coolant.
Remember: adding coolant to an over-
heated engine can cause damage to
the cylinder head.

When problems occur

• If the fan belt is broken:
Immediately stop the engine. If an
engine is used with a broken fan belt,
this can lead to the engine overheat-
ing, which in turn can cause coolant to
spray out of the expansion tank.