PERIODIC MAINTENANCE
6LY3 Operation Manual 93
PERIODIC MAINTENANCE
SCHEDULE
Daily and periodic maintenance are
important to keep the engine its best
operating condition. The following is a
summary of inspection and servicing items
by inspection interval. Periodic
maintenance intervals should vary
depending on the uses, loads, fuels and
lubricating oils used, and handling
conditions, and are hard to establish
definitively. The following should be treated
only as a general standard only. Periodic
Maintenance Procedures on page 96 gives
a detailed explanation of which parts must
be inspected and the procedure for doing
so for each interval.
Note: Schedule your own periodic
inspection plan according to the
operational conditions of your
engine and inspect every item.
Neglect of periodic inspections
may lead to engine troubles and
shorten the life of the engine.
Inspection and servicing at 250
hours and thereafter require
special knowledge and
techniques. Consult your
Yanmar dealer or distributor.
Refer to the separate manual of
marine gear for the periodical
inspection.
c: Check : Replace z: Contact your authorized Yanmar marine dealer or distributor
System Item Daily
Periodic Maintenance Interval
Every
50 hrs. or
one month
whichever
comes
first
Every 250
hrs. or one
year
whichever
comes
first
Every 500
hrs. or 2
years
whichever
comes
first
Every
1000 hrs.
or 4 years
whichever
comes
first
Every
2000 hrs.
or 8 years
whichever
comes
first
Whole Visual inspection of engine
exterior
c
Fuel System Check the fuel level, and refill c
Drain the fuel tank c
Drain the fuel filter and the fuel /
water separator
c
Replace the fuel filter element
Check the fuel injector spray
pattern
z
1
(1st time)
z
1
Overhaul and check fuel feed
pump
z
Replace rubber fuel hoses Replace every 2 years or every 2000 hours, whichever comes first.
Lubricating
System
Check the engine oil
level
Crankcase c
Replace the engine
oil
Crankcase
(1st time)
Replace the engine oil filter
element
(1st time)
Clean engine oil cooler z
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