Kubota WG1605-E3 Diagnostic Manual page 110

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, DM
Step
With the fuel line loose at the fuel filter inlet (in-line
filter) or at the LPL inlet.
Slowly open and close the manual valve.
L9
Did fuel begin to flow when the manual valve was
opened?
Check the fuel supply system, the hoses are plugged
or restricted or the tank valve is not opening.
L10 Locate and repair the problem.
Is the action complete?
Replace the fuel filter. Refer to Fuel Filter
Replacement.
L11
Is the action complete?
Repair the open or short, in the lock-off circuit.
L12
Is the action complete?
Replace the dual stage regulator (DSR).
Refer to Dual Stage Regulator Replacement.
L13
Is the action complete?
Replace the lock-off. Refer to Low Pressure Lock-off
(LPL) Replacement.
L14
Is the action complete?
The fuel supply system is operating normally.
Install the test plug, in the DSR secondary chamber.
L15 If you were sent to this routine by another diagnostic
chart, return to the previous diagnostic procedure.
Is the action complete?
Disconnect all test equipment.
Install the primary and secondary test port plugs, if
removed.
Start the engine.
L16
Using SNOOP® ? or equivalent, leak check the test
port plugs, if removed.
Is the action complete?
Action
1-100
Value(s) Yes
Go to
–
Step L14
Go to
–
Step L16
Go to
–
Step L16
Go to
–
Step L16
Go to
–
Step L16
Go to
–
Step L16
– System OK
– System OK
ECM SYSTEM
No
Go to
Step L10
–
–
–
–
–
–
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KiSC issued 12, 2016 A