Mitsubishi S12U

6-1
Chapter 6
PERIODIC INSPECTION AND MAINTE-
NANCE PROCEDURES
Fuel System
Draining Water from Fuel Filters (Wire-Element Type)
Before handling fuel, make sure there is no flame or heat source in the area.
Wipe spilled fuel thoroughly. Spilled fuel can cause a fire.
Check for damage of threaded section of the filter case, the drain plug and the sealing washer, if any damage
are found, replace with the new one.
1 Close the fuel feed valve to cut off the fuel supply to
the engine.
2 Place a container under the fuel filter to receive
drained fuel.
3 Turn the handle at the top of the fuel filter to remove
dust and other particles from the element.
4 Remove the drain plug and the sealing washer to dis-
charge sediment from the filter.
5 Reinstall the drain plug and the sealing washer.
6 Bleed air from the fuel system.
Note: Refer to "Bleeding Fuel System" (3-2) for the pro-
cedure for releasing air from the fuel system.
Draining Water from Fuel Filters (Center-Bolt Type)
Before handling fuel, make sure there is no flame or heat source in the area.
Wipe spilled fuel thoroughly. Spilled fuel can cause a fire.
Check for damage of the center bolt, drain plug threaded section and the sealing washer. If any damage are
found, replace with the new one.
1 Close the fuel feed valve to cut off the fuel supply to
the engine.
2 Place a container under the fuel filter to receive
drained fuel.
3 Remove the drain plug and the sealing washer to dis-
charge sediment from the filter.
4 Reinstall the drain plug and the sealing washer.
5 Bleed air from the fuel system.
Note: Refer to "Bleeding Fuel System" (3-2) for the pro-
cedure for releasing air from the fuel system.
fig.6-1
Draining water from fuel filter (wire-element type)
Sealing washer
Drain plug
Filter case
Handle
fig.6-2 Draining water from fuel filter (center-bolt type)
Drain plug
Sealing washer,
Center bolt,