ZD331 Zero Turn

Have you tried lubricating all wear/contact points. I did a quick search and only found an adjustment procedure at


Free Service manual. You’ll need to search via Duck/duck as it is just a pdf download.

There is a tension spring and dampener involved, maybe dry and require lubing, if not intentional. You’ll need to dig into the info if these doc’s apply.
Hope it helps or gets you sent in a better direction.
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