A plain mower includes a plurality of rotary cutters for cutting a crop and a swathing unit for forming the cut crop material into a swath. The swathing unit includes an auger that rotates about an axis to transport crop material axially through the swathing unit. The swathing unit can be configured in a first configuration in which the crop material is ejected axially from the auger, and can be reconfigured in a second configuration in which the crop material is ejected radially from the auger.