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MAINTENANCE
10. Loosen air bleed plug (C) at the fuel main filter head (3).
11. Loosen wing nut (6) holding lever (5) of priming pump (4).
12. Push in lever (5) repeatedly.
Check that bubbles come out with the fuel from air bleed
plug (C).
13. Tighten air bleed plug (C).
Tightening torque: 4.9 to 6.9 Nm (0.5 to 0.7 kgm)
14. Tighten wing nut (6) securely to lock lever (5) in position.
Target tightening torque: 11.8 Nm (1.2 kgm)
15. After replacing the filter cartridge, start the engine and run it at low idling for 10 minutes.
Check for leakage of fuel from the filter seal surface. If any fuel is leaking, check the tightening of the filter car-
tridge. If there is still fuel leakage, repeat Steps 1 - 4 to remove the filter cartridge, and if any damage or
embedded foreign material in the packing surface is found, replace it with a new cartridge and repeat Steps 5
- 15 to install it.
MAINTENANCE PROCEDURE
4-69
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