3 Steps to Properly Adjust Your Chainsaw Chain Tension

Loosen the bar nut and lift the bar tip slightly. Turn the tension screw until the chain touches the bottom of the bar rails but still pulls freely by hand. Tighten the bar nut and spin the chain by hand—it should move smoothly with no sag.

Test the tension by releasing the brake and tugging the chain. It should snap back against the bar without drooping. If it feels stiff, loosen the bar nut, back off the tensioner a quarter turn, and re-tighten.

Adjust the chain every time you refuel. This takes 30 seconds and prevents binding, sprocket wear, and dangerous derailment.