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MAINTENANCE PROCEDURE
REPLACE FUEL FILTER ELEMENT
(With water separator)
The engine is at a high temperature immediately after the engine is stopped. Wait for all parts to cool
down before replacing the filter.
Do not bring fire or spark near the fuel.
Prepare a filter wrench for fuel filter element.
Prepare a container to catch drained fuel.
1.
Set the container to catch the fuel under the filter element
and element cup.
2.
Close valve (1) at the top of the filter.
3.
Using a filter wrench, turn filter element cup (2) counter-
clockwise to remove it.
4.
Clean the filter holder, fill the new filter element cup with
fuel, coat the packing surface with engine oil, then install
it to the filter holder.
5.
When installing, tighten unit the packing surface contacts
the seal surface of the filter holder, then tighten it up 2/3
of a turn.
NOTICE
If the filter element cup is tightened too far, the packing
will be damaged and this will lead to leakage of fuel. If the
filter element cup is too loose, fuel will also leak from the
packing, so always tighten to the correct amount.
6.
Set fuel control lever to the low idling position.
7.
After replacing the fuel filter element, bleed the air.
For details of the procedure, see the section on bleeding
the air in this paragraph.
8.
After replacing the filter element, start the engine and
check that there is no leakage of fuel from the filter seal
surface. If there is any leakage of fuel, check the tighten-
ing of the filter element cup. If there is still leakage of fuel,
follow Steps 1 and 3 to remove the filter element cup,
then check the packing surface for damage or foreign
material. If any damage or foreign material is found in the
packing, replace the packing with a new part, then repeat
Steps 4 to 7.
4-48
WARNING
MAINTENANCE
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