PERIODIC MAINTENANCE
JH Series Operation Manual
113
PERIODIC MAINTENANCE SCHEDULE
Daily and periodic maintenance is important to keep the engine in good operating
condition. The following is a summary of maintenance items by periodic maintenance
intervals. Periodic maintenance intervals vary depending on engine application, loads,
diesel fuel and engine oil used and are hard to establish definitively. The following should
be treated only as a general guideline.
NOTICE
Establish a periodic maintenance plan according to the engine application and make sure
to perform the required periodic maintenance at the intervals indicated. Failure to follow
these guidelines will impair the engine’s safety and performance characteristics, shorten
the engine’s life and may affect the warranty coverage on your engine.
Consult authorized YANMAR Marine dealer or distributor for assistance when checking
items marked with a
●
.
: Check or Clean
: Replace
●
: Consult your authorized YANMAR Marine dealer or distributor
Periodic Maintenance Interval
Daily
Every 50
hours or
monthly
which-
ever
comes
first
Every 250
hours or
1 year
which-
ever
comes
first
Every 500
hours or
2 years
which-
ever
comes
first
Every
1000
hours or
4 years
which-
ever
comes
first
Whole
Visual inspection of engine
exterior
Fuel
System
Check the fuel level and refill
if necessary
Drain water and sediment
from fuel tank
Initial 50
Drain the fuel/water
separator
Replace the fuel filter
element
Lubricating
System
Check the
lube oil level
Engine
Marine Gear
Replace the
lube oil
Engine
Initial 50
Marine Gear
Initial 50
Replace the
oil filter
element
Engine
Initial 50
Marine Gear
(if equipped)
Initial 50
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