Yanmar 4JH45 Especificações descarregar pdf (Página 79)

PERIODIC MAINTENANCE

JH Series Operation Manual 73

12/05

Fuel filter

Figure 14

1. Close the fuel tank drain cock.

2. Remove the fuel filter with a filter

wrench.

Note: When removing the fuel filter,

hold the bottom of the fuel filter

with a cloth to prevent the fuel

from spilling. Wipe up any spilled

fuel immediately.

3. Apply a thin film of clean diesel fuel to

the sealing surface of the new filter

gasket.

4. Install a new filter and hand-tighten.

Use a filter wrench and tighten to 20 to

24 N·m (14.75 to 17.7 ft-lb).

5. Bleed the fuel system. See Bleeding

the Fuel System on page 38. Dispose

of waste properly.

6. Check for fuel leaks.

Changing the Engine Oil and

Replacing the Engine Oil Filter

Element

See Changing the Engine Oil and

Replacing the Engine Oil Filter Element on

page 64.

Changing the Marine Gear Oil and

Replacing the Marine Gear Oil Filter

Element (if equipped)

See Changing the Marine Gear Oil and

Replacing the Marine Gear Oil Filter (If

Equipped) on page 65.

Checking or Replacing Seawater

Pump Impeller

1. Loosen side cover bolts and remove

the side cover.

2. Inspect the inside of the seawater

pump with a flashlight. If any of the

following are found, disassembly and

maintenance are required:

• Impeller blades are cracked or nicked.

Edges or surfaces of the blades are

marred or scratched.

• Wear plate is damaged.

3. If no damage is found when inspecting

the inside of the pump, install the

O-ring and side cover.

4. If a large amount of water leaks

continuously from the water drain line

below the seawater pump during

operation, replace the mechanical seal.

Consult authorized Yanmar Marine

dealer or distributor.

Replacing the Seawater Pump Impeller

Note: The impeller must be replaced

periodically (every 1000 hours)

even if there is no damage.

Component Part No.

Fuel filter 129A00-55800

056905-00X00

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