Oregon Maintenance and Safety Manual, MMANUAL-EN AB

Saw Chain Troubleshooting

Problem: Cutters & Tie-Straps Wear Heavily or Break

11. Excessive heel wear on cutters and opposite tie-straps; cracks under rear rivet holes. Cause: Forcing dull saw chain to cut. Low depth gauge settings. Lack of lubrication. Loose saw chain tension. Symptoms: Excessive heel wear on cutters. Saw chain breakage. Excessive saw chain stretch. Remedy: Replace worn or cracked cutters and/or tie-straps. NOTE: One or more of the following may be required to prevent future wear and / or cracks: (1) Refile cutters using the correct angles. (2) Keep more lubrication on the saw chain and guide bar. (3) Reduce the amount of depth gauge setting (may require replacement of the saw chain). (4) Do not force dull saw chain to cut. (5) Do not force saw chain through frozen wood. (6) Keep cutters sharp. (7) Always maintain proper tension. 12. Tie-straps or cutters, broken in the center. Cause: Incorrect field assembly of saw chain components. Symptoms: Broken tie-straps or cutters. Remedy: Replace broken components. 13. Bottoms of tie-straps and cutters worn out of square. Cause : Worn guide bar rails. Symptoms: Bottoms of tie-straps and cutters worn out of square. Remedy: Dress the tops of the guide bar’s rails square. If wear is minor, file the bottoms of tie-straps and cutters square. If wear is extensive, replace the saw chain.

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Safety & Maintenance Manual

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