A haymaking machine provided with a supporting wheel set (4) and a pair of crop processing members (7, 8) disposed on either side of a drawbar (1). The orientation of the wheel set (4) relative to the drawbar (1) is adjustable by means of a steering device. The haymaking machine is adjustable into three operative positions. One is with the drawbar straight behind and having one swath between the members (7, 8), a second is with the drawbar (1) at a first angle and having one, reduced swath, and a third with the drawbar (1) at a second, opposite angle and having two swaths.
