Yanmar BY Series Service Manual page 20

Safety Precautions
CAUTION
NEVER operate the engine with the
batteries disconnected. Damage to the
alternator will result.
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.
CAUTION
Immediately cap or plug all openings to
prevent contamination of system.
CAUTION
NEVER use an engine starting aid such
as ether. Engine damage will result.
BY Service Manual
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SAFETY
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