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Solution Regroove bar tip. Bar may need replacing.
Note Applies to Armor Tip bars only.
Nicked bottom or back.
Cause Cutting with loose chain, or wrong pitch sprocket.
Solution Adjust chain tension. Install correct sprocket. File off burrs. Replace damaged drive links or replace chain.
Front point turned up.
Cause Drive links bottoming in sprocket. Sprocket worn.
Solution Replace sprocket. Sharpen tangs. Check for burrs.
Scars on sides.
Cause Loose chain jumping off bar.
Solution Adjust chain tension. Replace bent drive links or replace chain. Refile at correct angle.
7
Battered and broken bottom. Cause
Chain jumped bar. Spur sprocket hit drive links.
Solution Replace damaged drive links, sharpen tangs with round file or replace chain. Remove burrs.
Front or back peened.
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.