Kubota L4200 fuel shutoff

[Arky217]

I have a kubota L4200. Ever since I got it, the way
I stop the engine is to pull the cable connected
to the lever on the fuel shutoff valve.

That lever also has a solenoid to shut off the fuel
that has never worked. Today, I decided to check it
out. The wire to the solenoid does not have 12 volts
neither with the key on nor with it off.

So, I took off the solenoid and tested it on a battery.
The solenoid works, so the problem is probably the
wire going to it or the key switch.

HOWEVER, when the solenoid is energized, its rod retracts.
Well, if it was working and retracted, it would move
the fuel shutoff lever the same way as when I pull the
manual cable.

So, what doesn't make sense to me is that if the solenoid
were working, it would have to be energized when the key
was in the off position.

That means the solenoid drain on the battery would be
constant all the time the tractor was not being used.

Why would it be designed like this. It would seem that
the solenoid should be energized when the key was on
and that de-energizing the solenoid would cause the
fuel shutoff lever to move to shut off the fuel like
pulling on the manual cable does.

 

[Smokeydog]

The fuel stop solenoid has an associated timed relay to make it work properly. Both have to work.

 

[Arky217]

The fuel stop solenoid has an associated timed relay to make it work properly. Both have to work.

OK, that makes sense now. I didn't know that. Evidently the relay energizes
the solenoid long enough to stop the engine, then times out.
The reason it doesn't work is probably the relay; thanks.