Yanmar 4JH45 Operation Manual page 78

PERIODIC MAINTENANCE
Replacing the Fuel Filter Element
WARNING
Fire and Explosion Hazard.
When removing any fuel system
component to perform maintenance
(such as changing the fuel filter), put an
approved container under the opening
to catch the fuel.
Never use a shop rag to catch the fuel.
Vapors from the rag are flammable and
explosive. Wipe up any spills
immediately.
Exposure Hazard.
Wear eye protection. The fuel system is
under pressure and fuel could spray
out when removing any fuel system
component.
Fuel pre-filter/water separator
Figure 13
1 – Filter element
2 – Drain plug
3 – Cover (fire-resistant)
4 – Clamp screw
72
1
2
4
3
056904-01X00
1. Close the fuel tank drain cock.
2. Loosen the clamp screw and remove
the fire-resistant cover, which is
installed to the lower part of the fuel
pre-filter / water separator to protect the
water alarm switch.
3. Attach a tube to the drain plug.
4. Loosen the drain plug and drain the fuel
from the drain plug.
5. Disconnect the electrical connectors
and remove the alarm switch with a
spanner wrench.
6. Remove the filter element with a filter
wrench.
7. Clean the filter element mounting
surface. Install new filter element.
Component
Fuel pre-filter
8. Install the alarm switch to the fuel
pre-filter. Apply clean fuel to the gasket
of the new fuel pre-filter.
9. Install filter element into engine and
hand-tighten until the gasket comes
into contact with the seat. Use a filter
wrench and tighten approximately 3/4
turn to 12.7 to 16.7 N·m (8.7 to 12.3
ft.-lb).
10.Install the fire-resistant cover and
tighten the clamp screw.
11.Bleed the fuel system. See Bleeding
the Fuel System on page 36.
12.Dispose of waste properly.
JH Series Operation Manual
Part No.
121857-55710