The Groundsmaster® 5900-D rotary mower offers an impressive 16′ (4.88 meter) cutting width for making quick work of even the largest jobs. Equipped with a 72 hp (53.7 kW) diesel engine, the 5900-D is powerful and efficient. The onboard InfoCenter™ provides diagnostics to identify potential maintenance issues. These features, along with the SmartCool™ system with an auto-reversing cooling fan, ensure a long, productive life.

Armrests: Standard

Battery: 12V

Blade Style/Type: Rotary

Blade Type (Description): 20″ (50.8 cm) heat-treated steel blades

Cab Unit: N/A

Controls: Control arm, right armrest, travels with seat and suspension. Deck lift/lower, electrohydraulic switches. Throttle; electronic, variable. Traction pedal, electronic. Park brakes: double-motion switch. Steering; hydrostatic load sensing.

Cooling System Description: 24V dual electric fan banks for separate engine radiator and hydraulic oil cooling; fan banks are variable speed and have auto-reverse, radiator is cross flow, 3 rows, 9 FPI. Hydraulic oil cooler is crossflow, 6 FPI.

Cup Holder: Standard

Cutting Unit Accessories: Atomic™ Mulching Blades, Flat Blades

Cutting Unit Type/Configuration: Three rear discharge rotary decks. All three decks: 192″ (488 cm), One wing: 57″ (145 cm), center deck: 92″ (234 cm), center deck + one wing: 144″ (366 cm)

Deck Construction: 11-gauge high-strength steel. 7-gauge, reinforcements, bullnose bumpers.

Deck Wing Protection: 2-way shock absorption on wing decks

Drivetrain: Diesel

Electrical System: Main: 12 volt system; Alternator: 12V, 80 amp, supplied w/ engine Battery: 1380 CCA (2x 690 CCA), Cooling Fans, Engine/Hydraulic cooling: 24 volt system; Alternator: 24V, 105 amp w/ remote sense; Battery: 350 CCA; Disconnect ON/OFF switch for 12 & 24 volt service safety.

Engine Cooling: Liquid Cooled

Fuel / Power Source: Diesel / Biodiesel

Fuel Capacity: 35 U.S. gal. (132.5 L)

Gauges/Instrumentation: InfoCenter™: Shows gauges, service reminders, advisories/faults and troubleshooting assistance. Shows fuel level, coolant temp, hydraulic oil temp, engine glow plug, low oil pressure, air cleaner restriction, 12V & 24V alternator output, engine hours, rpm and DPF regeneration.

Ground Clearance: 10.3″ (26.1 cm)

Ground Speed – Forward: 0 – 20 mph (0 – 32.2 km/h)

Ground Speed – Reverse: 0 – 10.5 mph (0 – 16.9 km/h)

Height: 85″ (216 cm)

Height of Cut Range: 1″ – 6“ (2.5 cm – 15 cm) in 0.5″ (1.3 cm) increments

Hydraulic Fluid Capacity: 19 U.S. gal. (71.9 L)

Hydraulic Fluid Type: Toro PX™ Extended Life Hydraulic Fluid

Implement Drive: HybridDrive™ – Hydraulic motor to spindle, remaining spindle(s), driven by “B” section v-belts with automatic, spring loaded idlers

IntelliDash™ Capable: No

Lighting: Standard

Main Frame/Chassis: All welded formed-steel frame with integral tie-down anchors

Max Slope Angle: Refer to operator’s manual

Mowing Rate (Productivity): Up to 20.9 acres/hr (8.5 hectacres/hr)

Mowing Speed: 0 – 10.8 mph (0 – 17.4 km/h)

Number of Blades: 11

Oil Capacity: 11 U.S. qt. (10.4 L)

Oil Cooler Description: Crossflow, hydraulic oil cooler @ 6 FPI.

Operator Area: Storage box, cup holder, 12-volt power outlet, double USB port

Optional Accessories: Two-post ROPS Extension System, Red Sunshade, White Sunshade, Rotating Beacon Kit, Work Light Kit, Additional Turn Signals, Horn, Backup Alarm, Auxiliary Braking System

Overall Width: 199″ (505 cm)

Parking/Service Brakes: Parking: Electrohydraulic controlled via double-motion rocker switch. Service: Dynamic, hydrostatic 4WD in low range. Front wheel drive braking in high range.

Power Steering: Yes

Power Train (Engine Description): 3.3 L Yanmar® EPA Tier 4 Final and EU Stage IV

emissions compliant turbo-diesel engine. 72 HP (53.7 kW) @ 2500 rpm, Torque: 206 ft.-lbs. (279 Nm) @ 1625 rpm Displacement: 202 cu. in. (3.3 L).

Product Length: 174″ (442 cm)

Reel/Cylinder Drive: Hydraulic

Safety/Operator Safety: LED headlights, brake lights, tail lights, amber turn signals and flashers

Seat: 4 -way adjustable seat with vinyl cushions. Air ride suspension with 3″ (7.6 cm) of adjustability.

Spindle Assembly: Shaft: 1.25″ (3.2 cm) hardened steel. Housing: 9” (22.9 cm) ductile iron. Bearings: Greaseable tapered roller.

Starting: Key Start

Steering System Description: Power steering with dedicated power source. Steering wheel tilts to desired operator position.

Tires – Front: 29″ x 12″ – 15″, 6-ply

Tires – Rear: 23″ x 10.5″ – 12″, 6-ply

Tool Box: Standard

Traction Drive: 4WD

Traction Drive (System): Full time automatic forward and reverse 4WD in low (mow) range. Front drive: 2-speed, fixed displacement high torque, low speed radial piston motors. Rear drive: single speed, fixed displacement, high torque, low speed radial piston motors.

Transport Width: 99″ (251 cm)

Turning Circle (Diameter): Uncut circle – 0″ diameter. Turning radius – 86″ (218 cm)

Weight: 6,710 lbs. (3043 kg) with full fluids

Wheelbase: 77″ (196 cm)

Width of Cut: 192″ (488 cm)