2018 Kubota F3990 72 Rear

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F3990 72 Rear



Whatever your mowing application, there’s a Kubota F Series mower that can do the job with power, precision, and efficiency. All offer greater safety, easier maintenance and superior operator comfort, as well as a higher level of productivity and reliability – making them the right choice to meet all your mowing needs.

  • Electric Governor: Stable, consistent engine speeds for superior results. The F3990 diesel engine features an electronic governor that stabilizes the engine speed at 2,500 rpm with the PTO switched on for enhanced cutting and discharge performance, and increases engine speed to 2,700 rpm with the PTO switched off for faster traveling speed.
  • Diesel Engine=Clean Emissions: Powerful Kubota diesel engines mean faster, more efficient job performance. These F Series engines have power to spare; their high torque rise ensures faster, smoother recovery under sudden loading, letting you power through tall or wet grass without skipping a beat. They're also environmentally and economically friendly thanks to their compliance with the EPA's Tier 4 emissions regulations, enhanced combustion efficiency, low vibration and noise levels, and reduced fuel costs.
  • Operator Comfort: Deluxe high-back seat with four separate adjustments – weight control, lumbar support, back angle and arm rests – to provide every operator with a custom fit and optimum comfort, tool box conveniently located under the seat, the High/Low speed lever and deck-lifting lever are positioned beside the operator’s seat for easier operation and greater convenience, hydrostatic power steering, tilt steering wheel, optional all-season cab
  • Professional Mower Deck: The Pro-Commercial mower deck features- an inner baffle to prevent cut grass from discharging to the front, a larger discharge chute to improve discharge performance, less power is needed to run the mower, swivel anti-scalp wheels, 6.0” deep mower deck, fabricated steel deck for years of reliable cutting performance with minimal maintenance, optional mulching kit, optional rear discharge mower – 60" and 72" are available
  • Easy Maintenance: Downtime is unproductive time, so the F Series is designed for quick and simple maintenance, quick-release engine cover, 90 degree tilt mower deck, dual-element air cleaner, integrated radiator screen
  • High Lift Capacity: A high lifting capacity gives the F Series the versatility to handle an array of implements, including a grass catcher, snow blower, rotary sweeper, debris blower and the 100” flex mower.
  • PTO Shaft Drive: Shaft drive means no belts or pulleys – just smooth and direct power transfer from the engine to the deck and other PTO-driven attachments. Shaft drive also requires less maintenance and provides greater dependability.
  • Multi-V-Belt and Steel Pulleys: In addition to providing greater wear resistance, the heavy-duty cast-iron pulleys and a multi-V-belt drive system effectively distribute and reduce tension while transmitting power to the mower blades. The multi-V-belt won’t twist or slip, thus reducing the chance of damage to the mower. You get more performance and power – and fewer problems.
  • Large Capacity Fuel Tank: A large, 16.1 gallon fuel tank not only keeps you working longer between fuel stops, it also reduces the number of fueling stops needed to complete long jobs. That means more time working and less time fueling up.
  • Hydrostatic Transmission (HST): A single HST pedal lets you easily change the direction as well as control the speed (4WD: 12.5 mph max. forward speed, 6.8 mph in reverse), keeping your hands free for steering and implement control for increased productivity.
  • Model: Kubota V1505T-IDI+DPF
  • Type: Liquid-cooled diesel (4 cyl)
  • Engine gross horsepower HP: 39
  • Total displacement cu.in. (cm3): 91.4 (1,498)
  • Air cleaner Type: Dual element
  • Air restriction indicator: Standard
  • Alternator: 12 V, 60A
  • Fuel tank capacity U.S. gal. (L): 16.1 (61.0)
  • Type: HST (F2/R2)
  • Max. travel speed Forward / Reverse mph (km/h): 12.5 (20) /6.8 (11)
  • 4WD mode select: Auto-assist 4WD with dual acting overrunning clutch/locked 4WD
  • Differential lock: Standard
  • Cruise control: Optional
  • Front: 24x12-12
  • Rear: 18x9.5 - 8
  • Type: Wet discs
  • Type: Hydrostatic power
  • Tilt steering: Standard
  • Turn assist brake: Optional
  • Tread (F/R) in. (mm): 41.2 (1047) /39.3 (997)
  • Wheelbase in. (mm): 51.2 (1,300)
  • Overall length in. (mm): 98.9 (2,510)
  • Overall width in. (mm): 53.9 (1,370)
  • Overall height in. (mm): 78.1 (1,985)
  • Weight Ib. (kg): 1,716 (780)
  • Ground clearance in. (mm): 7.3 (185)
Mower Mounting
  • Type: Independent live, Shaft drive
  • PTO revolution: 2,580
  • Clutch: Wet multi discs, hydraulic
  • Lift system: Hydraulic 2-point hitch
  • Tilt angle Degrees: 90
  • Tilt assist: Standard
  • Weight transfer: Standard
  • ROPS: Standard (ISO21299 and OSHA)
  • Fuel gauge: LCD Display
  • Tachometer: LCD Display
  • Toolbox: Standard
  • Seat: Reclining suspension seat
  • Cup holder: Standard
Mower Specifications
  • Model: RCK72R-F36
  • Discharge: Rear discharge
  • Cutting width in. (mm): 72 (1,826)
  • Cutting height in. (mm): 1 (25) - 5 (127)
  • Cutting height adjustment in. (mm): Each 0.25 (6.4)
  • Depth in. (mm): 5.5 (140)
  • Deck pan: Welded
  • Thickness in. (mm): 0.108 (4.5)
  • Number of blades: 3
  • Mulch kit: Optional



Engine Manufacturer
Kubota V1505T-IDI+DPF
Horse Power
39 hp
Engine Type
Liquid-cooled diesel (4 cylinder)
91.4 cu.in. (1,498 cc)


HST (F2/R2)
Wheel Size
Front: 24x12-12; Rear: 18x9.5 - 8
Fuel Capacity
16.1 US gal. (61.0 L)


Deck Size
72 in. (1,826 mm)
Discharge Type
Rear; Optional: Mulch

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