Using the mid mount mower it will run anywhere from 5 to 15 mins. Then stops. The mower spins freely I changed the fluid yesterday but the problem started the night before.
just to clarify, when I say "stops" it drags the motor rpms down, once I disengage the pts the engine recovers and it will go again for a while. if I don't load the mower much (go slow stay out of deep grass) it will run ok for a bit longer, up to 45 mins or so.