Yanmar 6LY3 series Operation Manual page 71

CAUTION
Excessive vibration may cause
damage to the engine, marine
gear, hull and onboard
equipment. In addition, it causes
noticeable passenger and crew
discomfort. Carefully select
engine mounts and propellers
when you design Yanmar marine
engine applications.
CAUTION
Sea trials can only be performed
safely when the vessel is
adequately manned. Do not
attempt to single-hand a vessel
while collecting and recording
performance data.
CAUTION
When you install instrument
panels:
• Avoid wet locations
• Avoid locations subject to
vibration
• Set meters at correct angle
Failure to follow these
instructions may cause
inaccurate or unreliable
instrumentation.
6LY3 Operation Manual
Back
If you have an installation with
two or three engines, and only
one engine is operating, it is
important to limit the amount of
throttle applied to the running
engine. If you observe black
smoke or movement of the
throttle does not increase engine
RPM, you are overloading the
engine that is running.
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Immediately throttle back to
approximately 2/3 throttle or to a
setting where the engine
performs normally. Failure to do
so may cause the running engine
to overheat or cause excess
carbon buildup which may
shorten the engine's life.
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• If the vessel is equipped with a
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• Be sure to re-open the seacock
ENGINE OPERATION
CAUTION
CAUTION
water lift (water lock) muffler,
excessive cranking could
cause seawater to enter the
cylinders and damage the
engine. If the engine does not
start after cranking 15
seconds, close the thru-hull
water intake valve to avoid
filling the muffler with water.
Crank for 15 seconds or until
the engine starts. When the
engine does start, stop the
engine immediately and press
the switch to the OFF position.
and restart the engine. Operate
the engine normally.
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