Originally Posted by danedg
Everything came apart with no fuss, and upon initial inspection looks amazingly clean and in good order. The chain tensioner is certainly a lump though... It does nothing at this stage. It looks like it could be adjusted towards the chain for some tension, but I doubt it would last long. It looks like a rubber block (cracked) . Lord knows how long it was run without providing tension.
What should I be on the lookout for?
For $83 you can replace both the chain and tensioner with better quality parts.