129 hydro issue
 

Well I completed restoration of my 129 and have a couple of issues. Hope y'all can help. My hydrostatic trans. leaks as I did not tear into it because it was fine prior to restoration (my luck!). But I know that's from the front seal, so I got that .However its always had issues with not staying on same speed. If I'm mowing and don't have my hand on the hydro.lever, it wants to take off full speed ahead. Any ideas?

possibly a trunion repair is in need. use the search option. there has been alot of discussion on this and its a pretty easy fix.

You can tighten up the clamp at the bottom of the hydro lever.
Pull the tunnel cover, you will see how it works.

Go to the Service Manual and look at page 2-56.