Connecting With External Fuel Tank - Shindaiwa DG25MK Assembly And Instruction Manual

9-5. Connecting with External Fuel Tank

CAUTION : FIRE
 Always make sure that the Power Switch is OFF position when working on
piping.
 Always be sure to wipe up any spilled fuel.
 After working on the piping, check that there is no fuel leakage.
Turn the 3way fuel valve lever to the "A"
1
side.(Position for using the internal tank.)
Remove the connecting hose from the 3way
2
fuel valve.
Remove the plate.
3
Pass the fuel hose from the external tank
4
through the external fuel ports and connect
to the external tank fuel inlet/return of the
3way fuel valve.
Turn the 3way fuel valve lever to
5
the "B" side.(Position for using the
external tank.)
Bleed air from the external tank
6
connecting hose. Fuel can be
supplied from the external tank
after completing the above
procedures.
< Note >
 Protect the piping connecting the external fuel tank and
this generator with corrugate tubing or similar in order to
prevent interference between the generator internal parts
and the external fuel ports.
 If using a hose for the piping, use oil-resistant hose with
an internal diameter of 8 to 9 mm.
 Set the fuel level of the external fuel tank from 0 to 3 m
from the underside of this generator. The fuel level of the
external fuel tank being lower than this generator will
result in poor engine operation or stoppage.
 Turn the 3way fuel valve lever to the "A" side in order to prevent fuel from flowing out from the
external tank fuel inlet/return.
 Turn the lever completely as far as possible. If the lever is not completely pressed to either
side, it might not be possible to supply fuel causing the engine to stop.
 Set the supply side so that it is 15 to 20 mm above the underside of the tank in order to
prevent foreign material or water from being suctioned from inside the external fuel tank.
 Set the external fuel tank return side at the same height as the supply side in order to prevent
poor engine operation due to air mixed in with the fuel.
 Refer to section "9-2 Procedures during Operation" for air bleeding.
 Some air may remain in hoses or pipes immediately after connecting the external fuel tank
resulting in unstable engine speed and engine stoppage.
 Do not leave the generator unattended for unmanned operation until you have confirmed that
the engine speed is stable.
External
Fuel Ports
Connecting Hose
Inlet
Return
Side
Side
Position A
31
3Way Fuel
Valve
Plate
Return
Inlet
Side
Side
Position B
External Tank
15～20mm