Yanmar 4JH3-TE, Operation Manual

Page: 45 / 65

5. MAINTENANCE & INSPECTION 41
5.2.3 Inspection Every 250 Hrs. or 1 yr.
(1) Replacing the Fuel Filter
Replace the fuel filter periodically before there is clog-
ging 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 bottom of
the fuel filter.
→
See 5.2.2(2)
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. Tighten the new fuel filter
part No. of the fuel filter:129574-55710
• 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
[Tightening torgue:11.8
∼
15.6N•m(1.2
∼
1.6kgf•m)]
7. Bleed the fuel system.
→
See 3.2.2.
• If you spill fuel, wipe spillage carefully.
• Start the engine to check for fuel leakage.
(2) Replacing Cooling Water
Cooling performance drops when the cooling water is contaminated with rust and scale.
Even if antifreeze is added, the cooling water must be periodically replaced because the properties of the
agent will degenerate. Replace the cooling water periodically.
• Draining the Cooling Water
→
See 4.9.1(2).
• Supplying Cooling Water
→
See 3.5
(3) Replacing the Engine Oil and Lube Oil Filter (2nd time & after)
After the second oil change, the engine oil should be replaced after every 250 hours.
Replace the lube oil filter at the same time.
→
See 5.2.1(1)
Tighten
Fuel filter
Loosen
Filter wrench