The baler has a main transmission arranged in a part located at a front of a pick -up baler frame, and a knotting mechanism including a driving line that is connected to a main transmission shaft. The mechanism has a knotting blower (160) for blowing air on the knotting mechanism, where the knotting blower is arranged on the frame. A driving shaft of the knotting blower is connected to a knotting driving shaft of the knotting mechanism.
