New Holland l 185 stalls

[GVations]

Hi my 2007 NH L185 stalls when I get out of seat. It started last year when I was plowing, I lifted up off the seat to adjust my pants and the parking brake engaged. It doesn’t do it all the time only after running machine for a while / when it gets hot. When it happens the machine stalls out then it won’t start ( it will crank just not start) until it cools down which seems to be about 30 minutes. Any help would be much appreciated.