Maeda MC815C, Operation Manual, Page: 312 / 426

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[2] DRAINING OF CONTAMINANT WATER/DEPOSITS IN FUEL PRE-FILTER
• Remember to stop the engine when refilling.
• The fuel pre-filter has fuel (diesel fuel) inside. Be extremely careful of fire such as
cigarettes when cleaning the fuel pre-filter
• If the fuel spills when the fuel pre-filter is removed, thoroughly wipe it off.
CAUTION
Water or dust accumulated inside the fuel pre-filter will cause engine failure. Check
inside the pot and remove any water or dust accumulated inside with the pan under the
container.
1. Place the machine on a level surface.
2. See “OPERATION 1.8 RADIATOR COVER” and remove
the radiator cover.
3. Turn the fuel lever (4) of the fuel pre-filter (1) to the
horizontal position (closed) to shut off the fuel.
4. Connect a hose (A) to the outlet of the valve (3) at the
bottom of the fuel pre-filter (1) and connect it to the
container (B) collecting the drained fuel.
5. Turn the valve (3) at the bottom of the fuel pre-filter (1)
to the left to loosen and drain the fuel until the red float
(2) inside the fuel pre-filter (1) sinks to the bottom.
6. When draining is finished, turn the valve (3) at the
bottom of the fuel pre-filter (1) to the right to close.
7. Disconnect the hose (A) connected to the valve (3)
drainage.
8. Turn the fuel lever (4) to the vertical position (open).
NOTES
Wipe off the oil spills completely.
9. Bleed the air from the fuel system according to the following sequence.
(1) Turn the starter switch to “ON” position and wait for 10 to 15 seconds until the fuel is
filled up inside the fuel pre-filter (1).
(2) Turn the starter switch to “OFF” position after the fuel is filled up inside the fuel pre-filter
(1).
CAUTION
If you start the engine without bleeding the air, air may mixed in causing burning out of
the supply pump or injector.
NOTES
After bleeding the air from the fuel system, verify that the red float (2) in the pot has not come
up from the bottom. The red float (2) in the fuel pre-filter (1) coming up indicates that the water
has mixed in.
10. See “OPERATION 1.8 RADIATOR COVER” and install the radiator cover.