Abstract: Haymaking machine for windrowing forage comprising a frame carrying several rotors connected to carrier arms which are articulated to the frame and which can be moved from a work position into a transport position. Said carrier arms are made as two telescopic parts of which the second carries the corresponding rotor and can slide with respect to the first part to vary the position of the corresponding rotor. The first telescopic part of at least one carrier arm comprises an additional guide section making it possible to increase the distance over which the second part with the corresponding rotor can move.