![Yanmar 4JH4-TE Operation Manual Download Page 54](http://html.mh-extra.com/html/yanmar/4jh4-te/4jh4-te_operation-manual_905579054.webp)
50 5. MAINTENANCE & INSPECTION
5.3.3 Inspection Every 250 Hrs.
(1) Draining the Fuel Tank
Refer to 5.3.1 (3).
(2) Replacing the Fuel Filter
Replace the fuel filter periodically before there is
clogging and the fuel flow is reduced.
1) Close the fuel cock of the fuel tank.
2) Drain the fuel from the fuel drain cock at the bot-
tom of the fuel filter.
3) Remove the connectors of the wiring and remove
the alarm switch using spanner.
4) Remove the fuel filter using the filter wrench.
5) Clean the fuel filter mounting face.
6) Replace the fuel filter with new one. Tighten the
new fuel filter.
Part No. of the fuel filter:129574-55800
• Install the alarm switch to the new fuel filter.
• Apply fuel oil to the gasket of the new fuel filter.
• Lightly screw in the fuel filter in position and
tighten it by hand until the gasket comes into
contact with the seat. After tightening by hand,
use the filter wrench to tighten it about 3/4 of a
turn.
7) Bleed the fuel system.
• If you spill fuel, wipe spillage carefully.
• Start the engine to check for fuel leakage.
(3) Adjusting the Tension of the Fresh
Water Pump Driving Belt (Alternator
Driving Belt)
Refer to 5.3.1(6).
When replacing the V-belt, it is necessary to loosen
the V pulley of the cooling fresh water pump.
(4) Replacing the Engine Lube Oil and
Lube Oil Filter, and the Marine Gear
Oil.
Refer to 5.3.1(1) and 5.3.1(2).
Tightening torque
11.8-15.6N•m (1.2-1.6kgf•m)
1
2
3
4
008422-00X
1
Fuel filter
3
Loosen
2
Filter wrench
4
Tighten