Yanmar 1GM10 Operation Manual page 61

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.
Figure 4
1 – Fuel Filter Housing
2 – Retaining Ring
GM Series Operation Manual
4.
5.
6.
7.
Inspecting the Fuel Injection Nozzle
Spray Pattern
See your authorized Yanmar Marine dealer
or distributor.
Replacing the Engine Oil Filter
Element
See Replacing the Engine Oil Filter
Element on page 50.
Inspecting the Seawater Pump
Impeller
Note: The seawater pump impeller must be
replaced every 1000 hours or every four
years, even if it is not damaged.
The seawater pump impeller will wear and
deteriorate with prolonged use. This will
reduce its capacity to move cooling water
through the engine. Inspect the seawater
(2)
pump impeller at its scheduled maintenance
interval or sooner if the discharge volume of
seawater is diminished. Refer to Figure 5
(1)
when performing this inspection.
0004804
© 2007 Yanmar Marine International
PERIODIC MAINTENANCE
Remove the fuel filter housing
(Figure 4, (1)) and remove the
element. Replace the element with a
new one.
Apply a thin film of clean diesel fuel to
the sealing surface of the new filter
gasket.
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).
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 34. Dispose of
waste properly.
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