BX25 Shuts off, then won't shut off

[Nick-BX25]

My BX25 died suddenly. Like the fuel solenoid shut her down. After a few seconds it restarted, ran fine but would not turn off. Pulled the solenoid by hand to shut it down. Found the solenoid fuse blown. replaced it and a few days later the same thing happened. So, something is firing the solenoid then that is blowing the fuse?

Any help would be grand! I figured I'd go pull the hood and look around but I doubt it is the solenoid. If I just turn key on and off it operates normally. Pulls in then releases after 5 seconds or so. does not blow fuse sitting in the shed.

Thanks!

 

[PoTreeBoy]

That 10A fuse powers (switched) the entire OPC circuit as well as the fuel shutoff relay trigger. Any short that blows the fuse will remove voltage from the yellow wire to the timer and fire the solenoid. If this is the fuse that blows, you could pull the yellow wire off the timer (make sure it can't short) and see if the fuse still blows. This takes the timer out to eliminate it as the culprit, if the fuse still blows you probably have a wire shorted in the OPC circuitry. You'll have to manually kill the engine.

The 15A fuse supplies the (non-switched) power to the solenoid through the timer relay with a red w/white wire. A short in this wire would blow the fuse but not shut the engine off. This fuse and wire are always hot, but the only time current flows is that 10 seconds after you turn the key switch off.

 

[North Idaho Wolfman]

Sounds like the timer or wiring are the two likely candidates.

EDIT: PoTreeBoy said it much better than I did!

 

[PoTreeBoy]

BTW there's a wiring diagram in the WSM available at Kubotabooks.

 

[Nick-BX25]

That 10A fuse powers (switched) the entire OPC circuit as well as the fuel shutoff relay trigger. Any short that blows the fuse will remove voltage from the yellow wire to the timer and fire the solenoid. If this is the fuse that blows, you could pull the yellow wire off the timer (make sure it can't short) and see if the fuse still blows. This takes the timer out to eliminate it as the culprit, if the fuse still blows you probably have a wire shorted in the OPC circuitry. You'll have to manually kill the engine.

The 15A fuse supplies the (non-switched) power to the solenoid through the timer relay with a red w/white wire. A short in this wire would blow the fuse but not shut the engine off. This fuse and wire are always hot, but the only time current flows is that 10 seconds after you turn the key switch off.

Wow, Thanks for a quick & knowledgeable answer. Yes, the 10 amp Delay fuse was blown. Looking around, I suspect the jumper than got mysteriously installed in the seat switch wiring may have been getting to the chassis under the seat . Taped er up good and wire-tied it out of trouble. May have been the fix. I think my son-in-law is digging stumps today so we should know soon. Again, thanks for a quality answer!