When should the chain on the chainsaw be replaced?

The chain should be replaced if:

  1. The drive links are burred and do not fit into the bar correctly.
  2. If any of the cutter teeth or drive links are broken or bent.
  3. If the chain has been sharpened over two thirds of the length of the cutter tooth of the chain.
  4. If there are any other visible cracks or damage to the chain.
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