Mitsubushi — Fuel system periodic inspection and maintenance Draining water from the fuel tank

A Mitsubushi service procedure — check it applies to your exact model before use.

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Procedure

1. Prepare a oil pan (capacity of 2 liters or more)
2. Open the drain cock of fuel tank and drain fuel at
3. Make sure that water and particles of foreign mat-
4. Clean the area around the fuel filters.
5. Place a drip pan under the fuel filters.
6. Using a filter wrench, remove the fuel filters.
7. Wipe off fuel on the fuel filter cartridge mounting
8. Check new fuel filters for proper seating of the gas-
9. Apply clean fuel to the gasket on the new fuel filter.
10. install the fuel filter.
11. After installing the new fuel filter, bleed the fuel fil-
12. Start the engine and let it idle for several minutes.
13. Close the fuel supply valve to cut off the fuel sup-
14. Place a container under the fuel filter to receive
15. Remove the drain piug to discharge sediment from
16. Reinstall the drain plug.
17. Bleed air from the fuel system.
18. Close the fuel supply valve to cut off the fuel sup-
19. Place a container under the fuel filter to receive
20. Remove the filter case.
21. Bleed air from the fuel system.

Source: manual:Mitsubishi S12A2-Y2PTAW Manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.