Groundsmaster® 5900

Sale price$450.00 Regular price$900.00
Save $450.00
4.7

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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)

Fast, tracked shipping

Most orders ship within 1-3 business days.

Secure checkout

All major cards accepted, protected checkout.

Warranty on every purchase

New and factory-reconditioned items are covered. See product details for warranty length.

Customer reviews

4.7 (10 reviews)
Write a review

Exactly as described, works well for our needs.

Diego F.· July 26, 2026 Verified purchase

Arrived well packaged and in great condition.

Amara J.· August 8, 2026 Verified purchase

Been using it for a few weeks now, holding up well.

Jessica Q.· June 28, 2026 Verified purchase

Good value for the price, would buy again. A little pricier than I hoped but the quality justifies it.

Michael X.· June 22, 2026 Verified purchase

Exactly as described, works well for our needs. Wish it came with a carrying case but that's a minor gripe.

Tom P.· June 16, 2026 Verified purchase

Solid purchase overall. Exactly as described, works well for our needs.

Paula L.· May 19, 2026 Verified purchase

Shipping was quick and the item arrived in great condition. Assembly took a bit longer than expected but works great.

Amara Y.· August 11, 2026 Verified purchase

Couldn't be happier. Great value for the price, would buy again. Would recommend to anyone considering the Groundsmaster® 5900.

Chen T.· January 26, 2026 Verified purchase

Couldn't be happier. Matches the listing closely, no complaints here.

Michael K.· June 15, 2026 Verified purchase

Really happy with this. Shipping was quick and the item arrived in great condition.

Denise R.· August 25, 2026 Verified purchase

Fast, tracked shipping

Most orders ship within 1-3 business days.

Expert support

Questions about parts, fit, or warranty? We're here to help.

Warranty included

New and reconditioned items are covered by manufacturer warranty.

Secure checkout

All major cards and secure payment methods accepted.