Yanmar 6SY Series, Operation Manual

Page: 52 / 128

BEFORE YOU OPERATE
44
6SY Operation Manual
DAILY CHECKS
Before you head out for the day, make sure
the Yanmar engine is in good operating
condition. Make sure you check the
following items.
Visual Checks
1. Check for engine oil leaks.
2. Check for fuel leaks.
3. Check for engine coolant leaks.
4. Check for damaged or missing parts.
5. Check for loose, missing, or damaged
fasteners.
6. Check the electrical harnesses for
cracks, abrasions, and damaged or
corroded connectors.
7. Check hoses for cracks, abrasions, and
damaged, loose or corroded clamps.
8. Check the fuel filter / water separator
for presence of water and
contaminants. If you find any water or
contaminants, drain the fuel filter /
water separator.
See Drain or Replace
the Fuel Filter / Water Separator on
page 91.
If you have to drain the fuel
filter / water separator frequently, drain
the fuel tank and check for the
presence of water in your fuel supply.
See Drain the Fuel Tank on page 93 .
A
WARNING
HIGH PRESSURE
HAZARD!
• Avoid skin contact with high
pressure diesel fuel spray
caused by a fuel system leak
such as a broken fuel injection
line. High pressure fuel can
penetrate your skin and result
in serious injury. If you are
exposed to high pressure fuel
spray, obtain prompt medical
treatment.
• NEVER check for a fuel leak
with your hands. ALWAYS use
a piece of wood or cardboard.
Have your authorized Yanmar
marine dealer or distributor
repair the damage.
• Failure to comply could result
in death or serious injury.
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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.
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