4.15 500 HOUR (6-MONTH) INSPECTION & MAINTENANCE
PROCEDURES
Thoroughly read and understand "1. SAFETY PRECAUTIONS" of this manual before performing the
inspection and maintenance.
Follow this section together with daily, 50-hour and 250-hour inspection and maintenance.
4.15.1 REPLACING FUEL FILTER
•Immediately after the engine is stopped, each part is heated. Wait for them to cool down.
•Wipe off spilled fuel to prevent a fire.
The oil filter cannot be reused because it is a cartridge type. Also, it cannot be disassembled for
internal cleaning. Replace it by the set.
1. Stop the engine, and open the engine hood.
2. By using the fuel filter wrench, turn filter
cartridge (1) to the left (A) to remove it.
3. Wipe the sealing surface of the filter base
with a clean cloth to prevent dust and foreign
materials from being seized.
4. Apply a thin film of clean engine oil to
packing (A) of new filter cartridge, tighten it
by hand, and then tighten an additional
two-thirds of a turn.
5. Bleed air according to "BLEEDING AIR
FROM FUEL SYSTEM" in Chapter 4.
6. Start the engine, run it at idling for several
minutes, and then check the filter mounting
area for fuel leakage.
1
A
A
A
A
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