3 Signs Your Chainsaw Chain Is Worn Out, Not Stretched

The chain keeps sagging after tightening If you tighten the chain and it goes loose again after just a few cuts, the rivets and drive links are worn down. This is not stretch—it is wear, and the chain needs replacing.

The chain rides up on the bar rails When the chain cannot stay seated on the bar no matter how much you tighten it, the wear has made it too long. Stop tightening and replace the chain.

The cut goes crooked If the saw pulls to one side even when you hold it straight, the chain has worn unevenly. A new chain is cheaper than damaging the bar and sprocket by running a worn one.