Hello, it starts right up, blades will engage and will be fine on a level surface. If there’s any incline whatsoever it slows to a crawl (even on concrete). I’m going to try replacing the transaxle belt as suggested by the previous owner. Anything else I should look at? Drive belt looks OK but since I have to remove it anyways I’ll replace it too. Thanks!

Patrick, October 2020

Just saw this so I assume its been resolved but in case someone else could benifit.
There is an adjustment on something called a link drive. it is only held on by a cotter pin so its easy to remove. If you turn the adjustment nut counterclockwise, it will give you more traction.

Good luck.

Joe D, August 2021