Saw Chain Troubleshooting
17. Drive link tang turned up. Cause: Worn drive sprocket.
Symptoms: Drive link tangs hit the bottom. Remedy: Replace drive sprocket. Sharpen drive link tangs as shown in the illustration below, if possible. If not, replace the saw chain. 18. Sides worn round or thin at bottoms. Cause: Guide bar rails have spread, or one rail has worn low, allowing saw chain to lean over. Symptoms: Saw chain cuts crookedly. Accelerated guide bar rail and saw chain wear. Remedy: Have guide bar rails serviced by a dealer, otherwise replace guide bar. Replace saw chain if wear is extensive or if problem persists. NOTE: Also check bottoms of tie-straps and tops of guide bar rails for damage.
Sharpening Drive Link Tangs
Pointed drive link tangs help remove chips and debris from your guide bar groove. Sharpen damaged tangs back to their original shape with a round file.
Safety & Maintenance Manual
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