This content requires Adobe Flash Player version
or later.
Either you do not have Adobe Flash Player installed,
or your version is too old,
or there is a problem with your Flash installation and we were unable to detect it.
Cause Wrong pitch sprocket or prolonged chain chatter.
Solution Replace sprocket. Adjust chain tension. Chain may be damaged beyond repair.
Sides worn round at bottom.
Cause Chain wobbled in bar groove. Caused by uneven cutters or worn bar rails.
Solution Rework bar rails and groove. Correct chain filing.
A. Open Bar Groove. B. Severe abrasion and wobbly chain on thin bar rails. C. Rails not flat. D. Wobbly chain, rails too thick. E. One rail too thin or soft.
Causes Uneven filing, worn bar rails cause chain to wobble.
Solution File chain properly. Recondition bar rails or replace bar. Replace chain if necessary.