The Patented hydraulic reach mower device permits the outer arm to be lifted in order to overcome possible posts, trees, obstacles. With such a system it is not necessary to slow down the working speed or stop the machine in case of overcoming obstacles. When lifted the outer blade will automatically stop while the inner one will keep on working. The DX/SX version of this model is characterized by a structure with a central pin around which the entire mowing equipment rotates. This rotation permits movement in both right and left advance direction.