2015 TORO GROUNDSMASTER 4000-D WIDE AREA BATWING RIDE SIT ON …The Toro 4000-D 4WD is a heavy-duty, professional-grade ride-on mower from the Groundsmaster series, featuring a 55 hp Yanmar turbo-charged diesel engine and a wide, 132-inch (335 cm) cutting width. It is built for challenging conditions, with full-time 4-wheel drive and Smart Power technology to maintain consistent blade speed. The mower is known for its precise and agile maneuverability, including the ability to mow a “zero uncut circle,” and has an InfoCenter™ display for monitoring machine health.