SAFETY
6
6LT Series Operation Manual
The safety messages that follow have NOTICE
level hazards.
It is important to perform daily checks as listed in
the Operation Manual. Periodic maintenance
prevents unexpected downtime, reduces the
number of accidents due to poor engine
performance and helps extend the life of the
engine.
Consult authorized Yanmar Marine dealer or
distributor if you need to operate the engine at high
altitudes. At high altitudes the engine will lose
power, run rough and produce exhaust gases that
exceed the design specifications.
Always be environmentally responsible.
Follow the guidelines of the EPA or other
governmental agencies for the proper
disposal of hazardous materials such as
engine oil, diesel fuel and engine coolant. Consult
the local authorities or reclamation facility.
Never dispose of hazardous materials by dumping
them into a sewer, on the ground, or into ground
water or waterways.
If a Yanmar Marine Engine is installed at an angle
that exceeds the specifications stated in the
Yanmar Marine Installation Manuals, engine oil
may enter the combustion chamber causing
excessive engine speed, white exhaust smoke and
serious engine damage. This applies to engines
that run continuously or those that run for short
periods of time.
If you have an installation with two or three engines
and only one engine is operating, the water pickup
(thru-hull) of the non-running engine(s) should be
closed. This will prevent water from being forced
past the seawater pump and eventually finding its
way into the engine. The result of water entering
the engine could cause seizure or other serious
problems.
If you have an installation with two or three
engines, and only one engine is operating, please
note that if the propeller shaft thru-hull (stuffing box)
is lubricated by engine water pressure and the
engines are interconnected, care must be taken
that water from the running engine does not enter
the exhaust of the non-running engine(s). This
water could cause seizure of the non-running
engine(s). Consult authorized Yanmar Marine
dealer or distributor for a complete explanation of
this condition.
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
speed, you are overloading the engine that is
running. 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.
Never turn off the battery switch (if equipped) or
short the battery cables during operation. Damage
to the electrical system will result.
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