Saw Chain
Drive Link Wear
Nicked bottom or back
Front point turned up
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
Cause Drive links bottoming in sprocket. Sprocket worn Solution Replace sprocket. Sharpen tangs. Check for burrs
2
Battered and broken bottom
Front or back peened
Cause Chain jumped bar. Spur sprocket hit drive links Solution Replace damaged drive links, sharpen tangs with round file or replace chain. Remove burrs
Cause Wrong pitch sprocket or pro- longed chain chatter Solution Replace sprocket. Adjust chain tension. Chain may be damaged beyond repair
Sides worn round at bottom
Excess wear on bottom of all chain parts
A
B
D
E
C
Cause Chain wobbled in bar groove. 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 Cause Uneven filing, worn bar rails cause chain to wobble
Solution File chain properly. Recondition bar rails or replace bar. Replace chain if necessary
Cutter and Tie Strap Wear
Excessive heel wear on cutters and tie straps
Light damage on cutting edges of top and/or side plates
Causes 1. Blunt top plate filing 2. Forcing dull chain to cut 3. Lack of lubrication 4. Low depth gauge settings 5. Forcing chain to cut frozen wood Solution File cutters properly. Don’t force dull chain to cut. Use oil freely
Cause Excessive pressure on dull or misfiled cutters. Common during winter Solution File chain correctly. Use oil freely
OREGON
OREGON
OREGON
OREGON
OREGON OR
OREGON
OREGON
OREGON OREGON
FOR 153
Saw Chain
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