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Kubota L3901 Tractor

The Kubota L3901 is a compact utility tractor from Standard L series. This model was manufactured between 2014 and 2021. The tractor was designed in 2 versions: L3901F (2-wheel drive) or L3901DT (4-wheel drive).

The Kubota L3901 powerline system components: a 111.4 cu.in (1.8L) Kubota D1803-CR-E4 3-cylinder direct injection liquid-cooled diesel engine with a rated power of 37.5 hp (28.1 kW), and synchronized shuttle transmission with 8 forward and 8 reverse gears. The maximum travel speed (forward/reverse): 13.2 mph (21.2 km/h) and 13.1 mph (21.1 km/h).

The open center hydraulic system includes a gear pump with a flow rate of 6.3 gal/min (23.9 l/min). The hydraulic pressure is 162 bar (2350 psi). The 2WD models are equipped with 5.00x15 front tires and 11.2x24 rear tires. The 7.2x16 or 27x8.50-15 front tires and 11.2x24 or 15x19.5 rear tires are used for 4WD tractors. The wheelbase is 63.3 inches (1610 mm). Compatible attachments for the tractor: a Kubota LA525 front-end loader with lift capacity to full height of 1131 lbs (513 kg), and Kubota BH77 backhoe with 2-ft flat digging depth of 89.8 inches (2280 mm).

Engine Model Kubota D1803-CR-E4
Engine Type 4-cycle vertical direct injection diesel
Number of Cylinders 3
Total Displacement, cu in (L) 111.4 (1.83)
Cylinder Bore, in (mm) 3.43 (87.0)
Piston Stroke, in (mm) 4.03 (102.4)
Aspiration Naturally aspirated
Rated Engine Power, hp (kW) 37.5 (28.1)
Rated Engine Speed, rpm 2700
Low Idle Speed, rpm 900
Maximum Torque, Nm (lb-ft) 115.8 (85.4)
Torque Speed, rpm 1500
Compression Ratio 23.8:1
Firing Order 1-2-3
Fuel System Common rail direct injection
Fuel System Control Electronic
Lubricating system Forced lubrication by pump
Cooling system Forced circulation with water pump
Emission Level Tier 4 Final
Fuel Tank Capacity, gal (L) 11.0 (42.0)
Oil Capacity, qts (L) 7.1 (6.7)
Coolant Capacity, qts (L) 6.3 (6.0)
Electrical System Rating, Volts 12
Charging System Alternator
Alternator Rating, Amps 40

Power Take-Off
PTO Operational Type Transmission
PTO Horsepower, hp (kW) 32.1 (23.9)
PTO Clutch Dry disc
PTO Speed, rpm 540
PTO / Engine Speed, rpm 540/2425

Transmission Type Synchro-Shuttle
Gearbox Type 8F/8R, gear shift
Number of Forward Gears 8
Number of Reverse Gears 8
Clutch Type Dry disc
Oil Capacity (2WD), qts (L) 29.7 (28.0)
Oil Capacity (4WD), qts (L) 30.2 (28.5)
Maximum Forward Speed, mph (kph) 13.2 (21.2)
Maximum Reverse Speed, mph (kph) 13.1 (21.1)

Wheels and Tires
Drive Wheels 2WD/4WD
Steering Configuration Front Steer
Steering System Integral power steering
Brake Type Wet disc
Front Tire Size (2WD) 5.00x15
Front Tire Size (4WD) 7.2x16
Rear Tire Size 11.2x24
Front Tire Size (Industrial) 27x8.50-15
Rear Tire Size (Industrial) 15x19.5
Front Tread (2WD), in (mm) 41.3 (1050)
Front Tread (4WD), in (mm) 43.1 (1095)
Rear Tread, in (mm) 43.8-50.8 (1115-1290)

Hydraulic System
Hydraulic System Type Open Center
Main Hydraulic Pump Type Gear
Implement Pump Flow, gpm (Lpm) 6.3 (23.9)
Steering Pump Flow, gpm (Lpm) 3.8 (14.5)
Hydraulic Pressure, Bar (psi) 162 (2350)
Number of Standard Remote Valves 1/3
3-Point Hitch Category Category 1
Draft Sensing or Lift Control Position Control
Rear Lift Capacity at 24" (0.6m) behind pin, lb (kg) 1435 (651)
Rear Lift Capacity at pin, lb (kg) 1998 (906)

Dimensions and Weight
Wheelbase, in (mm) 63.3 (1610)
Length (2WD), in (mm) 110.6 (2810)
Length (4WD), in (mm) 107.9 (2740)
Height (ROPS), in (mm) 91.7 (2330)
Height (Steering Wheel), in (mm) 58.1 (1475)
Overall Width, in (mm) 55.1 (1400)
Ground Clearance (2WD), in (mm) 13.6 (345)
Ground Clearance (4WD), in (mm) 13.4 (340)
Turning Radius (2WD), in (mm) 94.5 (2400)
Turning Radius (4WD), in (mm) 98.4 (2500)
Weight (2WD), lb (kg) 2590 (1175)
Weight (4WD), lb (kg) 2765 (1255)



Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294