Shindaiwa DGK150DU Owner's Manual page 47

(7) Fuel System Air Bleeding
The entry of air into the fuel system will cause hard engine starting or engine
malfunction.
When performing maintenance such as emptying the fuel tank, draining for the water
sediment, and the fuel filter element is done, be sure to conduct air bleeding procedure.
1
Loosen the air bleeding screw located on top of the main fuel filter housing.
Turn the starter switch to the "RUN" position but do not
2
start the engine to operate electromagnetic pump.
Operate the manual priming pump on fuel filter to bleed
3
remaining air.
Tighten the air bleeding plug of fuel filter.
4
After tightening all the air bleeding plugs, operate the
5
manual priming pump until resistance is felt.
Secure the priming pumps at the original position and
6
then start the engine. If the engine does not Start, repeat the procedure.
Air-bleeding plug tightening torque: 7.9 to 11.7 Nm (0.8 to 1.2 kgfm
(8) Electromagnetic Pump Filter Cleaning
Clean
Remove the wirings attached on the pump cover.
1
Rotate the cover with a wrench and remove it.
Turn the cover, located at the bottom of pump,
2
counter-clockwise and remove filter.
Clean the filter with the compressed air and rinse
3
it in the fuel oil before installing the filter and the
gasket.
4
Reinstall in the reverse order.
< NOTE >
Put a tray under the lever in order to catch spilled fuel when changing filter.
Extract the air in fuel line after filter changing finishes.
(Refer to "9-3. Procedures during Operation")
Ensure that there is no fuel leakage after reinstallation.
Every 500 hours
44
Air-Bleeding Plug
Priming Pump
/ 5.8 to 8.6 lbf･ft )
Electromagnetic
Pump
Gasket
Filter
Gasket
Pump Cover