Model #502254120 CRAFTSMAN Lawn, Tractor

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How to fix a Loose Chain 502.254120


Thank you for your question and I understand your concern.

The chain does require a roller and idler to keep tension on the chain. If the roller and idler assembly is missing, this will cause a loose chain and cause the chain to jump off the sprockets and get jammed.

Key #54 is the assembly and I believe it comes with the roller key#51.

I hope this helpful.

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Joey S -
Sears Technician
May 02, 2014