Hitachi ZW180 Operator's Manual page 261

ZW310
WARNING: Beware of fire. Fuel is flammable. Keep
fuel away from fire hazards.
IMPORTANT:
• Take care not to allow foreign matter such as dirt
to enter the fuel pre-filter.
• Be careful not to damage fuel pre-filter housing (1).
• Take care not to allow water to enter the fuel pre-
filter.
1. Remove fuel pre-filter cap (2).
2. Slowly remove filter element (4) and fuel pre-filter cap (2)
from filter housing (1). Take care as the fuel may spill.
3. Holding the upper side of fuel pre-filter cap (2) and the
lower side of filter element (4), press the bottom of filter
element (4) to separate the element from the cap.
4. Replace O-ring (3) with a new one. Coat the new O-ring
with grease.
5. Press new pre-filter element (4) in fuel pre-filter cap (2).
6. Install fuel pre-filter cap (2) and filter element (4) to filter
housing (1).
Fuel pre-filter tightening torque: 25 N•m (2.5 kgf•m)
7. After replacing fuel filter element (4), bleed air from the
fuel system.
[Refer to the descriptions for "Bleed air from the fuel sys-
tem" in item 3 .]
8. Close the fuel pre-filter port cap. Start the engine.
IMPORTANT:
• Run the engine at slow idle speed for approx. 1
minute. Air will be automatically purged out of the
fuel system.
• If the engine won't start, manually bleed air.
9. Start the engine. Check fuel pre-filter (1) for fuel leakage.
MAINTENANCE
7-61
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M4GB-07-069
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3
4
M4GB-07-070