Toro Groundsmaster® 5900 (31598)

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Groundsmaster® 5900 (31598)



The Groundsmaster® 5900 is loaded with productivity-boosting advantages like the Cummins® turbo-charged, 99 hp (73.8 kW), diesel engine (biodiesel-ready, up to B20), SmartCool™ System with auto-reversing cooling fan, onboard InfoCenter™ diagnostics, and much more.

  • Full 16 ft (4.9 m) Cutting Width
  • Cummins® Turbo-charged 99 hp (73.8 kw) Diesel Engine
  • InfoCenter™ Onboard Diagnostics
  • Biodiesel: Biodiesel ready up to B-20.
  • SmartCool™ System With Auto-Reversing Cooling Fan: Variable speed, temperature actuated reversing fan. Blows chaff off intake screen to help reduce overheating. Big time saver which reduces that amount of times an operator has to stop and exit the unit to clean the back hood.
  • Operator Comfort: The operator area of the Groundsmaster® 5900 was designed to make work more comfortable with amenities like a large operator platform, multi-size beverage holder, 12-volt power jack on control arm, personal storage box, storage slots for radio and phone, deluxe seat, portable radio holder, tilt steering, and air ride seat. Operators will also be pleased with the additional storage area behind the seat that's large enough for a water cooler, trash bucket, and other items.
  • Traction: The full-time, 4-wheel drive puts power where it's needed. The cutting decks automatically take weight off the cutting units for more flotation, and put it on the traction wheels when climbing hills. Individual wheel brakes and 4WD flow divider can be used to provide additional traction assistance.
  • InfoCenter™: With the all-new InfoCenter™, you get helpful maintenance reminders and instant notification of potential problems. It's like having a mechanic on board.
  • Cummins® 99 hp (74 kW) Engine: Get more productivity with a surprising mix of fuel flexibility, efficiency, low emissions and unstoppable power. The gutsy Cummins QSB3.3 inline 4-cylinder engine puts out 99 hp (74 kW) and 306 lb-ft (415 Nm) of torque to cut the thickest, wettest grass you can find. All while exceeding EPA Tier 3 and EU emissions standards for non-road diesel engines.
  • Maneuverability: Mow closely around trees and other obstacles with zero trim. You can also turn 180° and leave no uncut grass.
  • Trimming: To mow between objects or along narrower areas, operators may raise either left or right wing decks (142" (3.6 m) width of cut) as well as both decks (92" (2.3 m) width of cut). The cutting units can be set from 1-6" (2.5-15.2 cm) to handle a wide variety of conditions.
  • Mowing Capacity: The 5900/5910 Series is all about covering maximum ground. With the cutting decks down, you get a full 16' (4.9 m) cut capable of mowing more the 100 acres (40.5 hectares) per day.
  • Wing Decks: Bi-directional Impact Absorption System: If the operator misjudges distance, the unique, bi-directional impact absorption system helps prevent damage and costly repairs. A massive spring-loaded shock cushions the decks away from the object.
  • Atomic® Mulching Blades: Atomic® mulching blades feature an aggressive "tooth" design that shreds grass and leaves into small particles. The teeth curl upward behind the blade to suspend clippings in the chamber so they are cut and re-cut until they virtually disappear.
  • GM Sunshade: Stay cool and productive when mowing with a GM Sunshade
  • Leaf Mulching Kit: Mounts to the deck to pulverize fallen leaves into fine mulch.



Engine Manufacturer
Horse Power
99 hp (73.8 kW)
Engine Type
QSB3.3 Turbo-charged diesel


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