Hitachi ZW 550-6 Operator's Manual page 349

7. Tighten air bleed plug (7) and drain (5).
m (5): 2.5±0.5 N·m (0.25±0.05 kgf·m, 1.8±0.4 lbf·ft)
m (7): 10±2 N·m (1.0±0.2 kgf·m, 0.74±0.15 lbf·ft)
8. Repeat for the other filter.
9. Turn the starter key to the ON position.
IMPORTANT: Do not start the engine.
10. Allow the fuel priming solenoid pump to prime the
fuel system while leaving the starter key to the ON
position for 30 seconds. Then, turn OFF the key to OFF
position for 30 seconds. It can be necessary to repeat
this process two or three times.
11. Turn the starter key to the START position.
If the engine does not start, repeat above steps 9 and
10.
(Refer to "Bleed Air from the Fuel System" in item
MAINTENANCE
.)
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Pre-Filter
7
95Z7-7-59-1