Replacing Fuel Filter / Water
Separator Element
Note: Yanmar supplies a water separating
pre-filter separate from the engine. Location
and type of filter may vary.
1. Disconnect the battery negative (-)
cable.
2. Close the fuel tank cock.
3. Loosen the drain plug (Figure 6, (4)) on
the bottom of the fuel filter / water
separator and drain off any water or
sediment.
4. Disconnect water sensor connector
(Figure 6, (1)).
5. Turn the filter bowl (Figure 6, (5))
counterclockwise to remove.
6. Remove the old filter element.
7. Clean the filter bowl. Inspect the water
sensor probe (Figure 6, (1)) for
damage if equipped. Inspect the bowl
seal (Figure 6, (2)).
NOTICE: When replacing fuel filters,
always pre-fill them with fresh, clean fuel
to improve the system's ability to be
bled.
(3)
(1)
(2)
(4)
0003650
(5)
Figure 6
8. Lubricate the seal at the top of the new
filter element (Figure 6, (3)) and install .
9. Lubricate the filter bowl seal
(Figure 6, (2)) and install the filter bowl
(Figure 6, (5)). Turn clockwise by hand
to tighten.
10. Ensure drain plug (Figure 6, (4)) is
securely tightened.
11. Connect water sensor connector
(Figure 6, (1)) if equipped.
12. Open the fuel cock.
13. Connect the battery negative (-) cable.
PERIODIC MAINTENANCE
52 BY Series Operation Manual
© 2008 Yanmar Marine International
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