OK , first off I claim to know nothing about sears transaxles , but I do have a little experince with hydrostatic drive cubs .
I once had a 782 that wouldn't move till you moved the lever to about half speed foward , then it would snap your head . It would back up fine . It would also free wheel going down hill till you reached level gound . Upon reaching level ground it would hesitate for a second then move normally .
I was about to condemn it to parts thinking the hydro was going out , but decided to try changing fluids and filter .
Came to find out that the hydro filter had internally collapsed and was restricting fluid flow to hydropump .
Like I said I know nothing about sears , but looking at the diagram I see a filter part #125 .
I can't tell much from the drawing , but maybe its a screen , filter , I really can't tell .
My point is before you condemn the pump , I'd check the fluid level and change the filter first .
Like I said a dirty / clogged filter will sometimes make hydros act like there going out .
The only reason I mention this is because his symptom sound eerily similar to what I've experienced .
If I'm off base , I apologize .
Edited by Jlaws, June 03, 2013 - 01:22 AM.