To adjust the tension of the saw chain (330i)

  1. Fold the knob out until it opens.
  2. Turn the knob counterclockwise to loosen the drive sprocket cover.
  3. Turn the chain tensioner wheel to adjust the tension on the saw chain. The saw chain must be tight against the guide bar.
    Note: Turn the wheel down (+) for more tension and up (-) for less tension.
  4. Make sure that you can pull the saw chain around freely by hand and that it does not hang from the guide bar.
  5. Turn the knob clockwise to tighten the bar knob.
  6. Fold down the knob to lock the tension.
Parent topic: To adjust the tension of the saw chain