Yanmar 6LY3 series Operation Manual page 96

PERIODIC MAINTENANCE
CAUTION
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.
CAUTION
If the fuel filter / water separator
is positioned higher than the fuel
level in the fuel tank, water may
not drip out when the fuel
filter / water separator drain cock
is opened. If this happens, turn
the air vent screw on the top of
the fuel filter / water separator
2-3 turns counterclockwise.
Be sure to tighten the air vent
screw after the water has drained
out.
CAUTION
• When the engine is operated in
dusty conditions, clean the air
cleaner element more
frequently.
• NEVER operate the engine with
the air cleaner or element(s)
removed. This may allow
foreign material to enter the
engine and damage it.
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CAUTION
Clean or replace the air cleaner
element if the air intake
restriction exceeds the value
listed in the Operation and
Service Manuals.
CAUTION
NEVER turn off the battery
switch (if equipped) or short the
battery cables during operation.
Damage to the electric system
will result.
CAUTION
NEVER move the adjustment
nuts without using a hoist to
take the pressure off the engine
mount. Failure to comply may
cause damage to the stud and
nut threads.
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.
6LY3 Operation Manual
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