2019 L2501 HST starts then shuts down

[FOXHAVEN]

OK here's what I've done so far. Inspected the fuel tank and looks clean and is 3/4 full.
Pulled the fuel filter housing and inspected the recently replaced fuel filter. Fuel refills the filter housing immediately. The only thing I have done that appears to have had an effect is to cycle the key switch on and of several times and it would stay running after turning over.
I replaced the fuel shutoff solenoid with no difference. My thinking is that the power to the initial open coil is good but the hold open coil is not always getting power. Also I have never experienced an engine shutdown while in use unless I leaned over too far in the seat. My next step since I also have a broken Tach cable is that while I have the dash out for that I may replace the key switch.
Anyone want to kick in there 2 cent solution I'd be happy to hear it.

 

[netspyder]

you might check the charging system. not sure about kubotas but on some the fuel solenoid is linked to the starter switch so that when you start it opens up the solenoid then the charging system keeps it open after that. you could do a temporary power to the fuel solenoid to apply constant power and see if that keeps it running

 

[JasonW]

Troubleshoot the key switch before replacing it. Always troubleshoot, don’t just throw parts at it.

 

[FOXHAVEN]

you might check the charging system. not sure about kubotas but on some the fuel solenoid is linked to the starter switch so that when you start it opens up the solenoid then the charging system keeps it open after that. you could do a temporary power to the fuel solenoid to apply constant power and see if that keeps it running

Key switch was good.
Problem solved (the seat switch was bad) jumped the circuit and it tested great so far

you might check the charging system. not sure about kubotas but on some the fuel solenoid is linked to the starter switch so that when you start it opens up the solenoid then the charging system keeps it open after that. you could do a temporary power to the fuel solenoid to apply constant power and see if that keeps it running

All good seat switch was the problem it was intermittent, The tractor starts and stays running after trying it repeatedly I think that was the problem will repost if it rears its ugly head again. Thanks all.

 

[FOXHAVEN]

Not all good after all.
Thought I fixed my start then shutdown problem by replacing a bad seat switch.
My seat switch WAS bad and my tractor ran just fine after that but after a couple of uses the whole starts then shutdown problem started again. This time I noticed the fuel shutoff solenoid sounded odd when I turned the key.
About the third time starting it remained running and worked just fine except for a stumble in the engine so I stopped what I was doing and just touched the bottom side of the key while in idle and it shut down.
Don't know what caused the ignition key to fail but I replaced it and it is running perfectly fine.
Starts and runs just fine, no stumbles or shutdowns.
BTW while I was at it changed out the broken tach cable. The old cable was more corroded where it broke than I would expect for such a low hour machine.
I guess I'll be disconnecting the engine side of the cable drive and spraying cable lube in there every 100 hours or so.

 

[North Idaho Wolfman]

I think I messed up my reply postings so here goes again>
All good
The seat switch was the problem, it was intermittent. "Jumped it to test it".
The tractor starts and stays running after trying it repeatedly.
I think that was the problem I will repost if it rears its ugly head again.
Thanks all.

That make perfect sense.

 

[TheOldHokie]

Key switch was good.
Problem solved (the seat switch was bad) jumped the circuit and it tested great so far

All good seat switch was the problem it was intermittent, The tractor starts and stays running after trying it repeatedly I think that was the problem will repost if it rears its ugly head again. Thanks all.

DOH!!

Dan

 

[FOXHAVEN]

you might check the charging system. not sure about kubotas but on some the fuel solenoid is linked to the starter switch so that when you start it opens up the solenoid then the charging system keeps it open after that. you could do a temporary power to the fuel solenoid to apply constant power and see if that keeps it running

Thanks for the suggestion, if I had done this I would have figured out that the ignition switch power to the run coil on the solenoid was the problem and traced it to the switch earlier as it was I figured out the key switch was the problem when I lightly touched the key and the engine shut down.
New key switch and problem fixed.

 

[FOXHAVEN]

DOH!!

Dan

Nope I was wrong, the problem came back.
I lightly touched the key while it was running and it shut down.
New swithch and a couple uses the problem appears to be truly solved.
I still had the old seat switch and I rechecked it, yah it was also bad. I hope this isn't one of those comes in threes kind of thing.