A sharp chain produces larger wood chips.
A dull chain produces smaller wood chips or saw dust.
Sharpening your chainsaw chain requires technique and practice.
The chain might be too dull or unevenly sharped. Make sure to sharpen the chain evenly on both sides, use the appropriate angle, and use the right filing equipment for each chain type/model.
Learn all about it in the link below or click on the step-by-step guide to get written and video instructions on:
How to sharpen a chainsaw chain
Written and video instructions