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Kubota M4050

The Kubota M4050 is a tractor produced by Kubota. It is equipped with a 158.64 ci 2.6 L engine. The listed engine power is Diesel (gross): 48 hp / 35.8 kW. Transmission: 8 forward and 2 reverse. Operating weight: 4080 to 4600 pounds.

Engine Power
Diesel (gross): 48 hp / 35.8 kW
Fuel & Capacities
14.3 gal 54.1 L
Transmission
8 forward and 2 reverse
Operating Weight
4080 to 4600 pounds

Overview

Kubota M4050 tractor photo
1982 - 1985 Utility tractor
Production
Manufacturer
Kubota
Utility tractor
Built in Japan
Variants
M4050DT
4WD
Kubota M4050 Engine
Kubota 2.6L 6-cyl diesel
Fuel tank
14.3 gal 54.1 L
Engine details ...
Kubota M4050 Transmission
8-speed constant mesh
Transmission details ...
Kubota M4050 Power
Engine (gross)
48 hp 35.8 kW
PTO (claimed)
42 hp 31.3 kW
Drawbar (tested)
36.20 hp 27.0 kW
PTO (tested)
45.74 hp 34.1 kW
Performance test details ...
Mechanical
Two- or four-wheel drive
Steering
manual
power assist *Standard with four-wheel drive, optional with two-wheel drive
Differential mechanical wet disc brakes
two-post ROPS.
Hydraulics
Type
open center
Valves
1
Total flow
9.25 gpm 35.0 lpm
Tractor hitch
Rear Type
II/I
Rear lift (at ends)
3,740 lbs 1696 kg
Power Take-off (PTO)
Rear PTO
independent
Rear PTO Type
540
Engine RPM
540@2193
Dimensions & Tires
2WD Wheelbase
78.1 inches 198 cm
4WD Wheelbase
80 inches 203 cm
Weight
4080 to 4600 pounds
Front tire
6.00-16
2WD Rear tire
13.6-28
Full dimensions and tires ...
References
M4050 references literature
Tractors and Excavators published in 1982, by Kubota
M-Series published in 1985, by Kubota

Engine

Engine Detail — 158.64 ci / 2.6 L Diesel

Manufacturer
Kubota S2600-AL
Fuel Type
Diesel
Configuration
6-cylinder, liquid-cooled
Displacement
158.64 ci 2.6 L
Bore/Stroke
3.23x3.23 inches 82 x 82 mm
Power (gross)
48 hp 35.8 kW
Compression
21:1
Rated RPM
2600
Starter volts
12

Transmission

Transmission — 8 forward and 2 reverse constant mesh

Type
constant mesh
Gears
8 forward and 2 reverse
M4050 constant mesh speeds

Dimensions

Kubota M4050 Tires
2WD Standard tires (ag)
Front: 6.00-16. Rear: 13.6-28
4WD Standard tires (ag)
Front: 8.3-20. Rear: 13.6-28
Dimensions
2WD Wheelbase
78.1 inches 198 cm
4WD Wheelbase
80 inches 203 cm
2WD Length
132.5 inches 336 cm
4WD Length
135.6 inches 344 cm
Width
72.6 inches 184 cm
2WD Height (exhaust)
89.6 inches 227 cm
4WD Height (exhaust)
88.2 inches 224 cm
2WD Shipping weight
4,080 lbs 1850 kg
4WD Shipping weight
4,600 lbs 2086 kg
2WD Clearance (front axle)
19 inches 48 cm
4WD Clearance (front axle)
11.4 inches 28 cm
2WD Front tread
56 to 80 inches 142 to 203 cm
4WD Front tread
58 inches 147 cm
Rear tread
51 to 75 inches 129 to 190 cm
Rear tread
59 to 75 inches 149 to 190 cm *With step
Rear tread
51 to 80 inches 129 to 203 cm OptOptional

Tests

Nebraska Tractor Test 1495
Diesel 8-speed 4WD September 26 - October 7, 1983 Link: Nebraska Tractor Test 1495 file
PTO performance
Power at rated engine speed
45.74 hp 34.1 kW
Fuel use
3.2 gal/hour 12.1 l/hour
Power at rated PTO speed
42.10 hp 31.4 kW
Fuel use
2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power
36.20 hp 27.0 kW
Fuel use
3.0 gal/hour 11.4 l/hour
Max pull
6,070 lbs 2753 kg

Photos

Kubota M4050

Kubota M4050

Recommended Implements & Sizing Guide

Engineering recommendations for Kubota M4050 based on its 48 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)Medium DutyStandard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing
6 ft (72 in)1.8 mMedium DutyMedium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep
66 to 72 in165 - 180 cmMedium DutyStandard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage
7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙Medium DutyField leveling and clod breaking behind plows.
Hay BalerHay & Forage
Small Square Baler (14x18")小方捆打捆机 (36x46 cm)Medium DutyClassic 2-string baler for horse and small livestock hay.
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Kubota M4050.

Estimated Continuous Field Runtime: 5.7 hrs

Approximately 5.7 hours of continuous field operation at ~75% rated power on a full tank (14.3 gal / 54.1 L).

Estimated 75% Load Fuel Burn~2.5 gal/hr (9.4 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Kubota M4050 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota M4050.

Converted Equivalents:

Horsepower (HP)48 hp
Kilowatts (kW)35.8 kW
Metric Horsepower (PS / CV)48.7 PS

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