Periodic Maintenance Procedures; Daily Checks - Yanmar 3JH5E Operation Manual

PERIODIC MAINTENANCE
PERIODIC MAINTENANCE
PROCEDURES
WARNING
Exposure Hazard.
Always wear personal protective
equipment when performing periodic
maintenance procedures.

Daily Checks

Before you head out for the day, make
sure the Yanmar engine is in good
operating condition.
NOTICE
It is important to perform the daily checks
as listed in this 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.
Make sure you check the following items.
Visual Checks
1. Check for engine oil leaks.
2. Check for fuel leaks.
WARNING
Piercing Hazard.
Avoid skin contact with the
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.
70
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 any damage.
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 Draining Fuel
Filter / Water Separator on page 76. 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 Draining the Fuel
Tank on page 71.
NOTICE
If any problem is noted during the visual
check, the necessary corrective action
should be taken before operating the
engine.
Check Diesel Fuel, Engine Oil and
Engine Coolant Levels
Follow the procedures in Diesel Fuel on
page 34 , Engine Oil on page 39 and
Engine Coolant on page 43 to check these
levels.
JH Series Operation Manual