Engine quits with no warning sounds

Derf

New member

Equipment
4630 GST tractor with cab
May 2, 2026
1
0
1
Colorado
On my L4630 GST, I have been using a friend's chipper/shredder on the PTO, and it works fine for about a half hour, then the tractor shuts off with no indications it's about to quit--no bogging down, no shuddering, it just stops. I can restart it immediately but it shuts down quicker after that. I don't see any idiot lights when I restart, but I'm not in the cab when it shuts off.

I bought the tractor used 4 years ago, and this is the first implement I've tried using the PTO. It never quits while I'm driving or in the seat, but I can't feed the chipper, obviously.

I've read some threads about stall protection shut-offs and seat/occupant switches, but those don't seem to apply, unless there's something that gets warm over time.

Anything else I could check?
 

#40Fan

Well-known member
Jul 21, 2022
526
373
63
USA
Is there a button that you press that allows you to run the PTO without being in the seat?

When you restart it, and shuts down again, are you sitting in the seat or outside at the chipper?

If yes to both, try setting a bunch of weight on the seat.