Adjust the length of the door opener arm

  1. Detach the door opener arm from the door opener arm bracket.
    Note: Do not discard the washer that is between the door opener arm and arm bracket.
  2. Rotate the end of the door opener arm to adjust its length. Align the hole at the end of the door opener arm about ½ diameter off from the hole in the door opener arm bracket.
    Note: Make sure that the door opener arm touches the door frame.
  3. Reinstall the end of the door opener arm to the arm bracket.
    Note: Install the washer between the door opener arm and the arm bracket.