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MAINTENANCE
3.
Place a container under fuel prefilter cartridge (2) to re-
ceive the fuel.
4.
Loosen drain valve (3) and drain water and sediments
from transparent cup (4), and also drain all the fuel from fil-
ter cartridge (2).
5.
Remove connector (5). Wrap the removed connector with
a vinyl bag to prevent fuel, oil or water from being splash-
ed on it.
6.
Turn transparent cup (4) counterclockwise to remove it by
using the filter wrench. This transparent cup is used again.
7.
Turn filter cartridge (2) counterclockwise by using the filter
wrench, and remove it.
8.
Install currently removed transparent cup (4) to the bottom
of the new filter cartridge.
At this time, be sure to replace O-ring (6) with a new one.
9.
Make sure that drain valve (3), which is provided in the
lower part of transparent cup (4) of the new filter cartridge,
is firmly tightened.
Tightening torque: 2.5 to 3.4 Nm {0.25 to 0.35 kgm}
10. Clean the filter head, fill the new filter cartridge with clean fuel, thinly apply oil to the packing surface, then
install it to the filter head.
NOTICE
•
When filling the filter cartridge with fuel, do not re-
move cap (B). Always fill with fuel from 8 small
holes (A) on the dirty side.
•
After filling with fuel, remove cap (B) and install
the fuel filter.
•
Always fill with clean fuel. Be careful not to let any
dirt or dust get into the fuel. In particular, center
portion is the clean side, so do not remove cap (B)
when filling with fuel. Be careful not to let dirt or
dust get into the center portion on the clean side.
11. When installing the cartridge, tighten it until the packing surface contacts the sealing surface of the filter
head, then tighten it 1/4 to 1/2 turn.
REMARK
If the filter cartridge is fastened too much, the packing will be damaged and this leads to leakage of fuel. If
the filter cartridge is too loose, fuel will also leak from the packing. Therefore, be sure to observe the tight-
ening angle.
When tightening with a filter wrench, be extremely careful not to dent or damage the filter.
12. Check that drain valve (2) is closed securely.
13. Remove the vinyl bag wrapping connector (5), then connect connector (5).
MAINTENANCE PROCEDURE
4-49
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