Yanmar 1GM10 Operation Manual page 66

PERIODIC MAINTENANCE
Draining the Fuel Tank
See Draining the Fuel Tank on page 53.
Replacing the Fuel Filter Element
WARNING
When you remove 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. Wear eye
protection. The fuel system is under
pressure and fuel could spray out when
you remove any fuel system
component.
When there is dirt in the fuel, the filter
becomes clogged and the fuel will not flow
easily. Check and replace the element.
1. Close the fuel cock of the fuel tank.
2. Place an approved container under the
fuel filter.
3. Loosen the retaining ring
(Figure 4, (2)) counterclockwise 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.
60
Figure 4
Figure 4
1 – Fuel Filter Housing
2 – Retaining Ring
4. Remove the fuel filter housing
(Figure 4, (1)) and remove the
element. Replace the element with a
new one.
5. Apply a thin film of clean diesel fuel to
the sealing surface of the new filter
gasket.
6. Clean the inside of the fuel filter
housing thoroughly, install the O-ring
and hand-tighten the retainer ring. Use
a filter wrench and tighten to 12 N·m
(8.8 lb-ft).
7. Air will enter the fuel system when the
filter is disassembled and should be
vented. Bleed the fuel system. See Air
Bleeding from the Fuel System After
Starting Failure on page 41. Dispose of
waste properly.
Inspecting the Fuel Injection Nozzle
Spray Pattern
Consult authorized Yanmar Marine dealer
or distributor.
GM Series Operation Manual
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