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Replace Fuel Pre-Filter Element
---every 500 hours
IMPORTANT:
Be sure to use only genuine Hitachi elements for
the main fuel filter and the pre-filter. Failure to do
so may deteriorate the engine performance and/or
shorten the engine service life. Please note that all
engine failures caused by using other manufacturers'
elements are excluded from Hitachi Warranty Policy.
Take care not to allow dirt and/or water to enter the
fuel system.
Procedures
1. Remove cartridge filter (1) by using a filter wrench.
Arrange a container to receive fuel for safety and to
prevent ground from contamination.
2. Apply a thin film of clean fuel to the gasket of new
cartridge filter element (2). Fill fuel pre-filter with clean
fuel.
3. Turn cartridge filter element (2) clockwise by hand until
the gasket touches the contact area.
4. Using the filter wrench, tighten the cartridge turn more.
Be careful not to overly tighten cartridge filter (1).
Deformation of the cartridge may result.
5. Bleed Air from the Fuel System
After replacing the fuel pre-filter, bleed air from the fuel
system.
(Refer to "Bleed Air from the Fuel System" in item
MAINTENANCE
1
.)
7-73
90Z7B-7-64-1
2
90Z7B-7-68-2
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