Could this be the problem? I have had issues with this before. It has a metal post that stops it from pulling to far back. It has been bent before. I also believe its missing the nylon piece.
Its the correct length. Sorry had to tear it down. Put it together and move it out to work on golf cart. I really need to clean out the other side of garage lol
The spring loaded tensioner isnt free moving. My grass is tall and wet. Looks like it moved but didnt spring back causing the belt to throw. Thank you so much for the help.