2 models from which to choose - 18-hp or 20-hp IS™ Independent Suspension with adjustable coil springs for a smooth, fast ride ; Dual commercial hydro pumps and wheel motors ; Rugged front 360° casters with roller-bearings for long life ; Twin-lever controls for smooth, fast maneuvering ; 0-7 mph forward infinite speed ; 44" and 50" mowers with full rear rollers ; 6.5-gallon fuel tank for long running time ; Fuel gauge is easily visible during filling and operation ; 7-position mower height-of-cut adjustment with transport lock ; Commercial quality electric PTO clutch ; Comfortable seat with armrests adjusts to fit operator ; Large 20-inch drive tires provide a smooth ride and protect turf, 4-bolt commercial style rims.