2500 gone berserk

[M1782t]

I was using it today and it worked as it normally does, I shut it off for about 1/2 hour and when I restarted it the left wheels went into full reverse. Even at idle it spun around in circles like crazy and the control t-handle made no difference. I haven't taken out the seat yet, but from what I can see all the control linkages seem to be working properly. Any suggestions? thanks

 

[Tazza]

I'd still check the linkages, seems like something there is wrong.
The drive pumps are pretty simple, lever moves one way the pump pumps in one direction, reverse that, and the flow reverses too.

 

[M1782t]

Problem solved, after getting the seat out to get a better look, it turned out that the roll pin had come out of the pump control shaft so the linkage and lever were working normal but the swash plate shaft was doing what ever it felt like. I should probably put a small bolt or something thru the inside of the roll pin to keep it from happening again. It was really dangerous and I was lucky that I didn't hit anything before killing the engine.

 

[Tazza]

Problem solved, after getting the seat out to get a better look, it turned out that the roll pin had come out of the pump control shaft so the linkage and lever were working normal but the swash plate shaft was doing what ever it felt like. I should probably put a small bolt or something thru the inside of the roll pin to keep it from happening again. It was really dangerous and I was lucky that I didn't hit anything before killing the engine.

The bolt through the roll pin isn't a bad idea.
Glad it was a simple fix, yet a dangerous situation.