Yanmar 6LYA-STP Mode D'emploi page 42

(4) Draining the fuel oil filter
1) Remove the drain plug at the bottom of fuel
oil filter and discharge water and dust
collected in the fuel oil filter.
2) After draining bleed air from the fuel
system.
(For further details, see Sec. 3. 2. 1 (2))
4.3.3 Inspection after First 250 Hrs.
(1) Inspection and Adjustment of Intake/Exhaust Valve Head Clearance (1st Time)
Inspection and adjustment must be made to correct opening/closing timing lags of the intake/
exhaust valves which might arise due to initial parts wear. This inspection requires specialized
knowledge and techniques. Consult your Yanmar dear or distributor.
(2) Inspection and Adjustment of Fuel Injection Valve (1st Time)
lnspection and adjustment are necessary to obtain optimal fuel injection to ensure the good
engine performance. This inspection requires specialized knowledge and techniques. Consult
your Yanmar dealer, or distributor.
4.3.4 Inspection Every 250 Hrs.(or 1 yr.)
(1) Replacement of Marine gear Lube Oil and cleaning the Filter (2nd time)
Replace marine gear lube oil and clean filter for
the second time.
(2) Replacing the Engine Lube oil and Filter
Replace the engine lube oil every 250 hours.
Replace the lube oil filter, too.
(3) Adjusting the (Governor Lever) Engine
Speed Control Cable
Check the (governor lever) speed control lever
at the engine side makes uniform contact with
the high speed and low speed side stopper
when the remote control handle is in the high
speed (high idle) or low speed (idle) position.
If either the high speed or the low speed side
does not make contact with stopper.
adjust as follows (next page):
(See 4.3.1(1).)
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Center bolt
Setting bolt
Bracket
Governor lever
[Fig.22]
Fuel oil filter
Drain plug
High idle
Limit bolt
Low idle
limit bolt
Fuel oil
injection
pump