Yanmar 4BY - CAUTION (NEVER hold the key in the START position for longer than 10 seconds or the starter motor will overheat.)

SAFETY
BY Service Manual
2-13
Safety Precautions
CAUTION
NEVER operate the engine with the
batteries disconnected. Damage to the
alternator will result.
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CAUTION
Any part which is found defective as a
result of inspection or any part whose
measured value does not satisfy the
standard or limit must be replaced.
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CAUTION
Immediately cap or plug all openings to
prevent contamination of system.
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CAUTION
NEVER use an engine starting aid such
as ether. Engine damage will result.
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