Volvo Penta D1 Series Operator's Manual page 36

Starting
34
Overheating Protection
If the starter motor is engaged for its maximum
activation time (30 seconds), the starter motor circuit
is cut automatically to protect the starter motor from
overheating. If possible, leave the starter motor to cool
for at least five minutes before making a new start
attempt.
Read off the instruments and warm up the
engine
Allow the engine to idle for the first 10 seconds. Read
off the instruments and check that they show normal
values. Check that no warning lamps are flashing. If
any lamp flashes, a fault has been registered; refer to
the Fault handling, page 41 chapter for more detailed
information and recommended actions.
Warm up the engine at low speed and low load, so that
normal working temperature is reached before full
power is applied.
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