PERIODIC MAINTENANCE
Periodic Maintenance Schedule
12/05
BY Service Manual
4-5
© 2009 Yanmar Marine International
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.
c: Check : Replace
System Item
Periodic Maintenance Interval
Daily
Every 50
hours or
monthly
whichever
comes first
Every 250
hours or
one year
whichever
comes first
Every 500
hours or
2 years
whichever
comes first
Every 1000
hours or
4 years
whichever
comes first
Every 2000
hours or
8 years
whichever
comes first
Whole Visual inspection of engine
exterior
c
Before
starting
Fuel System Check for fuel leakage c
Before
starting
Check the fuel level and
refill if necessary
c
Before
starting
Drain water and sediment
from fuel tank
c
Drain the fuel filter / water
separator
c
Replace the fuel fine filter
Replace fuel filter / water
separator element
Check the fuel pump and
fuel lines
c
Lubricating
System
Check the engine oil level c
Before
starting
Change the engine oil and
replace the oil filter
element
Initial 50
Cooling
System -
Engine Coolant
Visual inspection of cooling
system
c
Before
starting
Check coolant level and
check for leaks
c
Before
starting
Drain and refill closed
cooling system (engine
coolant)
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