Kubota L4150

Last Updated: July 2024

Overview

The Kubota L4150 is a compact utility tractor that's part of the reputable L-series line. Produced by Kubota between 1984 and 1990, this tractor comes in both 2WD (L4150F) and 4WD (L4150DT) variants. It is powered by a robust 2.3 L, five-cylinder diesel engine that delivers 49.92 horsepower at 2600 rpm. This workhorse boasts a partially synchronized transmission with 8 forward and reverse gears, allowing for a variety of speeds and efficient field work. The tractor is also fitted with power steering and mechanical wet disc brakes enhancing operation and safety. It presents an open operator station with two-post ROPS, ensuring the operator's comfort and protection during tasks. The L4150 has a rear-positioned Category 1 hitch with a lift capacity of 3530 lbs, along with a rear live PTO featuring speeds of 540 and 750 rpm, making it a capable and versatile partner for a range of agricultural demands. Additional details from independent testing have been incorporated, including maximum torque, torque rise, hydraulic performance, and fuel efficiency metrics.

Key Specifications

Category: Utility

Power Output: 49.92

Transmission: Partially synchronized with dry plate clutch

Drive Type: 2WD or 4WD

Operating Weight: 3750 to 4080

Fuel Type: Diesel

Kubota L4150 vs. Similar Tractors

Power Output

Average

Greater than 49% of similar tractors.

Hitch Capacity

Average

Greater than 64% of similar tractors.

Operating Weight

Above Average

Greater than 86% of similar tractors.

Technical Specifications

Engine

Manufacturer: Kubota
Model: F2302
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Natural aspirated
Cylinders: 5
Displacement (ci): 142
Bore (in): 3.31
Stroke (in): 3.19
Rated RPM: 2600
Power Output (hp): 49.92

Transmission

Type: Partially synchronized with dry plate clutch
Forward Gears: 8
Reverse Gears: 8
Total Gears: -

Dimensions

Length (in): 129.1
Width (in): 67.7
Height (in): 61.8
Operating Weight (lb): 3750 to 4080

Power Take-Off (PTO)

PTO Type: Rear: Live
PTO Speed 1 (rpm): 540
PTO Speed 2 (rpm): 750
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD or 4x4 MFWD 4WD
Drive Type: 2WD or 4WD
Steering Type: Power
Coolant Capacity (qts): 8
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: 1990
Hitch Type: -
Hitch Category: Category 1
Hitch Position: Rear
Hitch Capacity (lb): 3530 lbs
Operator Station Type: Open operator station with two-post ROPS
Starter Type: Electric
Brake Type: Mechanical wet disc
Hydraulic System Type: Open Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: March 22, 1985

Maximum Power and Fuel Consumption

Maximum Power: 49.77 HP (37.10 kW) at 2600 rpm
Fuel Consumption at Maximum Power: 3.56 Gal/hr (13.48 l/h) with a fuel efficiency of 0.543 lb/hp.hr (0.330 kg/kW.h)

Drawbar Performance

Maximum Power at Rated Engine Speed: 41.78 HP (31.17 kW) with a drawbar pull of 2566 lbs (11.41 kN) and a speed of 6.58 mph (10.59 km/h)
Fuel Consumption at Rated Speed: 0.542 lb/hp.hr (0.329 kg/kW.h) with a fuel efficiency of 12.20 Hp.hr/gal (2.40 kW.h/l)

Torque and Engine Performance

Maximum Torque: 158 lb.-ft. (214 Nm) at 1600 rpm
Torque Rise: 20%

Hydraulic Performance

Maximum Force Exerted: 2992 lbs (13.31 kN) at hitch points
Pump Delivery Rate: 12.4 GPM (46.94 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 18.6 HP (13.9 kW) at delivery pressure of 2000 psi (138 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (540 rpm): 12.31 Hp.hr/gal (2.43 kW.h/l)
Fuel Consumption: 3.21 Gal/hr (12.14 l/h) at 2500 rpm

Nebraska Tractor Test Lab. (1985). Test 1556: Kubota L4150 FWD and 2WD Diesel 8-Speed. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1867