A mowing arrangement includes a main, mobile frame to which a base or first carrier part or frame is mounted for being pivoted vertically by a remotely operable hydraulic motor. Mounted to the base carrier frame is a second carrier part to which arms supporting opposite side and front mowing units are attached. The front-mounted mowing unit is mounted to the second carrier part through the agency of a fourth carrier part, in the form of a parallelogram linkage that includes the support arm for the front-mounted mowing unit. The second carrier part is mounted for pivoting about a transverse, horizontal axis so that the cutting angles of each of the mowing heads can be remotely adjusted by pivoting the second carrier part. A third carrier part is fixed for movement with the second carrier part and supports a drive transmission having output shafts respectively coupled for supplying power to the three mowing heads.