Patent ID: 7971415

Claim:
A grass mowing machine, comprising: a frame having an adjustable width toolbar including a center section and left and right outer sections telescoping into the center section; the adjustable width toolbar being adjustable between at least a first width and a second width; the first width accommodating a first pair of cutting units supported by a first pair of lift arms, each lift arm of the first pair of lift arms pivotably connected to an outboard end of one of the outer sections of the adjustable width toolbar; and a first hydraulic lift cylinder mounted between an inboard end of each first lift arm and the adjustable width toolbar at a first selected mounting point in the center section that is aligned with a mounting point in one of the outer sections to provide a specified toolbar width for the first pair of cutting units; the second width accommodating a second pair of cutting units wider than the first pair of cutting units supported by a second pair of lift arms, each lift arm of the second pair of lift arms being longer than the first pair of lift arms and pivotably connected to an outboard end of one of the outer sections of the adjustable width toolbar; and a second hydraulic lift cylinder mounted between an inboard end of each second lift arm and the adjustable width toolbar at a second selected mounting point in the center section that is aligned with a mounting point in one of the outer sections to provide a specified toolbar width for the second pair of cutting units.