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Saw Chain Troubleshooting Problem


Cutters and tie straps wear heavily or break 13


14 15


Excessive heel wear on cutters and opposite tie straps. Remedy: See H.


16


Cracks under rear rivet holes on cutters and opposite tie straps. Remedy: See H.


Tie straps between cutters, broken in the center. Remedy: See I.


Bottoms of tie straps and cutters worn out of square. Remedy: See J.


Remedies: H. 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. (pictures 13 and 14)


I. Such breakage is usually caused by incorrect field assembly of preset tie straps. Breakage usually occurs on the tie strap opposite the factory preset tie strap (picture 15). See number 7, page 45 for correctly shaped rivets.


J. 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. (picture 16)


52


SAW CHAIN


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