Kubota BX2380 Fuel Shutoff Valve

[fransser]

I tried to start my tractor today and it wouldn't start. Just to get other things out of the way, the problem isn't electrical, fuel supply or anything like that.

The actual problem is that once the fuel shutoff solenoid releases, the assembly that is connected to the solenoid doesn't "spring" back into the open position. My neighbor has the previous model tractor (2370) and his valve assembly (which appears to be identical) does spring back to the open position. So the only thing the solenoid does is temporarily close the valve and shut off the fuel supply.

With all that said, has anyone encountered an issue like this and if so, what is the best solution to fix it. For the time being, I can manually move the valve to the open position after stopping the tractor. I have tried some cleaner and lubricant, but that hasn't seemed to help thus far.

I'd appreciated any suggestions.
Thanks

 

[RCW]

If you don't have one, get a Workshop Manual (WSM). Throw the guy a few bucks for his efforts.

www.kubotabooks.com

Should help with diagnostics.

I think your BX2380 is very much like my BX2360, just newer.

From Kubota Tractor Corporation - Illustrated Parts List (kubotausa.com)

My tractor extends the stop solenoid rod to the "run" position about 6-8 seconds after the tractor shuts down.

I'm guessing the stop solenoid is bad, or there's some interference in the linkage. Not sure which, but I'd first disconnect the linkage to make sure everything is free.

I'd run the tractor again to see if you can hear/see the solenoid attempt to extend. Probably could bench test off from 12v power.

Don't just throw parts at it. Likely a simple solution.

I had a very brief issue with my solenoid associated with the Seat Safety Switch and OPC, but I'd consult the WSM first......

 

[Mark_BX25D]

If you don't have one, get a Workshop Manual (WSM). ...


Don't just throw parts at it. ..... , but I'd consult the WSM first......

This. Can I say it again? Don't just throw parts at it.

 

[whitetiger]

After you shut the engine off, unplug the white wire powering the shut-off solenoid. Does it now extend?
If it does, you have a problem with the ignition switch or shut-off timer.
If not, loosen the 2 solenoid mounting bolts (10mm wrench or socket) and see if it extends.

If it does not extend, replace the shut-off solenoid.

 

[fransser]

If you don't have one, get a Workshop Manual (WSM). Throw the guy a few bucks for his efforts.

www.kubotabooks.com

Should help with diagnostics.

I think your BX2380 is very much like my BX2360, just newer.

From Kubota Tractor Corporation - Illustrated Parts List (kubotausa.com)

View attachment 139901


My tractor extends the stop solenoid rod to the "run" position about 6-8 seconds after the tractor shuts down.

I'm guessing the stop solenoid is bad, or there's some interference in the linkage. Not sure which, but I'd first disconnect the linkage to make sure everything is free.

I'd run the tractor again to see if you can hear/see the solenoid attempt to extend. Probably could bench test off from 12v power.

Don't just throw parts at it. Likely a simple solution.

I had a very brief issue with my solenoid associated with the Seat Safety Switch and OPC, but I'd consult the WSM first......

Thanks for the reply. The solenoid appears to be good. I haven't actually measured the rod travel, but it appears to be retracting and extending in the same manner as my neighbors (who has the 2370 model). It's all that "linkage" that is connected to the rod that appears to be the problem. I don't suppose you have a nice exploded view of that portion of the tractor?

 

[RCW]

Thanks for the reply. The solenoid appears to be good. I haven't actually measured the rod travel, but it appears to be retracting and extending in the same manner as my neighbors (who has the 2370 model). It's all that "linkage" that is connected to the rod that appears to be the problem. I don't suppose you have a nice exploded view of that portion of the tractor?

Follow the Kubota illustrations I linked before. If you’re in Canada, there’s a similar option.

Make sure you have followed the directions in the WSM, as well as what @whitetiger mentioned on post #4.

whitetiger really is an expert. He’s forgetten more about these machines than I’ll ever know.