To tighten 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. The saw chain is tightened correctly when you can turn is easily by hand but is tight against the guide bar.
  4. Turn the knob clockwise to tighten the bar knob.
  5. Fold down the knob to lock the tension.
  6. Do a check of the chain tension frequently, until the saw chain is run-in.
  7. Do a check of the chain tension regularly to keep good cutting performance and a long life.
Parent topic: To tighten the saw chain