Abstract: An upper frame assembly for a skid steer loader machine includes a pair of spaced tower assemblies. Each of a pair of side members has a rear end portion connected to a respective tower assembly so that a front end portion of the side members extends longitudinally from the tower assemblies. A crossmember assembly extends between the pair of tower assemblies at a position between the front and rear end portions of the side members. The crossmember assembly and front end portions of the side members define an open access area. The crossmember assembly and rear end portions of the side members define an open service area. Both the open access area and open service area are unobstructed by structural elements of the upper frame assembly.