Beta Marine Beta 50 Operator's Maintenance Manual page 24

8. Initial engine start (please refer to 'Normal Starting
and Stopping' on page 25). Note the engine may have
to be turned over with the starter for a few seconds
before it fires.
Do not run the starter for more than 10 seconds. If
the engine has not started after 10 seconds there is
probably still air in the fuel system; disengage the
starter and continue to hand prime the engine with
the fuel lift pump lever for a further 30 seconds, then
repeat.
If engine does not start after 3 attempts then allow 5
minutes for the starter to cool down before repeating
6 (b) to 8.
CAUTION:
THE STARTER MOTOR WINDINGS CAN BE
BURNT OUT WITH CONTINUOUS CRANKING.
9. If the engine does not easily start at the first or
second attempt, do not over crank the engine with the
seawater inlet seacock turned 'on'. (This problem may
have been caused by air in the fuel system, running
out of fuel, or changing a fuel filter, etc).
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