A mid-mounted mower disposed below the body of a tractor is suspended from the tractor body upwardly or downwardly movably by a pair of opposed flexible link assemblies each flexible about an axis extending longitudinally of the tractor body. During mowing the mower is movable up and down following rises and falls of the ground, while when running on a road or the like, the mower is lifted in a substantially horizontal position by a hydraulic cylinder connected between the pair of link assemblies, or by a hydraulic unit in a rear portion of the tractor body through wires.