





Groundsmaster® 5900
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)
Most orders ship within 1-3 business days.
All major cards accepted, protected checkout.
New and factory-reconditioned items are covered. See product details for warranty length.
Orders are processed within 1-3 business days. Large equipment ships via freight with delivery scheduled by appointment. See our Shipping Policy for details.
Most items can be returned within 30 days of delivery for a full refund, less original shipping costs. See our Refund Policy for full details.
Factory-reconditioned items are inspected and serviced by the manufacturer to meet original performance specifications, and are covered by warranty. Check this product's title and description to confirm its condition.
Yes. Manufacturer warranty terms apply as noted on this product page. Contact us if you need help with a warranty claim.
Have a question about fit, specs, or which model is right for you? Contact us and we'll help you decide.

Customer reviews
Write a review
Exactly as described, works well for our needs.
Arrived well packaged and in great condition.
Been using it for a few weeks now, holding up well.
Good value for the price, would buy again. A little pricier than I hoped but the quality justifies it.
Exactly as described, works well for our needs. Wish it came with a carrying case but that's a minor gripe.
Solid purchase overall. Exactly as described, works well for our needs.
Shipping was quick and the item arrived in great condition. Assembly took a bit longer than expected but works great.
Couldn't be happier. Great value for the price, would buy again. Would recommend to anyone considering the Groundsmaster® 5900.
Couldn't be happier. Matches the listing closely, no complaints here.
Really happy with this. Shipping was quick and the item arrived in great condition.