Tractor stalls when brake is applied.

   / Tractor stalls when brake is applied. #11  
I was applying the brake while sitting still. No other pedals pressed. Engine was at lowest throttle level, HST in low gear. I applied the brake pedal and it pretty quickly stalled.
Does it creep in one direction or the other by itself?
I would be suspicious of maybe the seat switch or HST neutral switch
 
   / Tractor stalls when brake is applied. #12  
Sounds like HST pedal adjustment or stuck pedal.
If it starts in the "neutral" position it probably does not go all the way back after being pressed/driven.
 
   / Tractor stalls when brake is applied. #13  
Applying the brake and trying to go with the engine idling I'd expect it to stall.
 
   / Tractor stalls when brake is applied. #14  
By in gear I mean not in neutral and in either Low or High range. Sorry should have been more clear.
(y) The HST isn't like a car with automatic tranny.
 
   / Tractor stalls when brake is applied. #15  
HST tractors etc need to run at or just under the “540” pto rpm when doing anything other than parked at idle, which is likely around the 2000-2400 engine rpm. Read the manual. Driving/working at idle speed is not good for the HST pump. Idle speed is for idling.
Another thought is maybe the seat safety switch is activated when the operator applies the brakes….his weight lifts off the seat?
 

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