Kubota M4030
The Kubota M4030 is a tractor produced by Kubota. It is equipped with a 158.5 ci 2.6 L engine. The listed engine power is Diesel (listed): 48 hp / 35.8 kW. Transmission: 8 forward and 2 reverse. Operating weight: 4078 to 4806 pounds.
Engine Power
Diesel (listed): 48 hp / 35.8 kW
Fuel & Capacities
16.9 gal
64.0 L
Transmission
8 forward and 2 reverse
Operating Weight
4078 to 4806 pounds
Overview
 | 1986 - 1989
M30 SeriesUtility tractor
M30 Series
Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Kubota |
Utility tractor | |
Built in Japan | |
Variants | |
|---|---|
M4030DT | 4WD |
M4030F | standard |
M4030L | low profile |
M4030SU | special utility |
Kubota M4030 Engine | |
|---|---|
Kubota 2.6L 6-cyl diesel | |
Engine details ...  |
Kubota M4030 Transmission | |
|---|---|
8-speed | |
Transmission details ...  |
Kubota M4030 Power | |
|---|---|
Engine | 48 hp
35.8 kW |
PTO (claimed) | 43 hp
32.1 kW |
Drawbar (tested) | 36.53 hp
27.2 kW |
PTO (tested) | 44.05 hp
32.8 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Differential lock | standard |
Power steering | |
Differential mechanical wet disc brakes | |
Two-post ROPS. | |
Capacity | |
|---|---|
Fuel | 16.9 gal
64.0 L |
Hydraulic system | 12.7 gal (2WD)
48.1 L |
14.9 gal (4WD)
56.4 L | |
Hydraulics | |
|---|---|
Type | open center |
Capacity | 12.7 gal (2WD)
48.1 L |
14.9 gal (4WD)
56.4 L | |
Pressure | 2630 psi
181.3 bar |
Valves | 1 |
Total flow | 11 gpm
41.6 lpm |
Tractor hitch | |
|---|---|
Rear Type | II/I |
Rear lift (at ends) | 3,968 lbs
1799 kg |
Rear lift (at 24"/610mm) | 3,307 lbs
1500 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 |
Engine RPM | 540@2194 |
Dimensions & Tires | |
|---|---|
2WD Wheelbase | 78.7 inches
199 cm |
4WD Wheelbase | 79.1 inches
200 cm |
Weight | 4078 to 4806 pounds |
Front tire | 6.00-16 |
Rear tire | 13.6-28 (2WD) |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
Front Loaders published in 1988, by Kubota | |
Front Loaders B, L and M-Series published in 1994, by Kubota* | |
Product Catalog published in 1990, by Kubota | |
M30 Series - Utility/Agri/Low Profile published in 1986, by Kubota | |
M30 Series - Utility-Agri/Low Profile/Narrow/Mudder published in 1991, by Kubota | |
*Publication contains known errors. |
Engine
Engine Detail — 158.5 ci / 2.6 L Diesel
Manufacturer | Kubota S2602 |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 158.5 ci
2.6 L |
Bore/Stroke | 3.23x3.23 inches
82 x 82 mm |
Power | 48 hp
35.8 kW |
Air cleaner | dual dry element |
Compression | 19:1 |
Rated RPM | 2600 |
Starter volts | 12 |
Oil capacity | 15.6 qts
14.8 L |
Coolant capacity | 8.7 qts
8.2 L |
Transmission
Transmission — 8 forward and 2 reverse
Gears | 8 forward and 2 reverse |
Oil capacity | 50.7 qts (2WD)
48.0 L |
59.7 qts (4WD)
56.5 L | |
 | |
Dimensions
Kubota M4030 Tires | |
|---|---|
Standard tires (ag) | Front: 6.00-16. Rear: 13.6-28 (2WD) |
Front: 9.5-20. Rear: 13.6-28 (4WD) | |
Front: 6.50-16. Rear: 14.9-24 (2WD Low Profile) | |
Front: 9.5-16. Rear: 13.6-24 (4WD Low Profile) | |
Optional tires (ag) | Front: 6.00-16. Rear: 14.9-28 (2WD) |
Front: 9.5-22. Rear: 14.9-28 (4WD) | |
Front: 9.00-10. Rear: 18.4-16 (2WD Low Profile) | |
Dimensions | |
|---|---|
2WD Wheelbase | 78.7 inches
199 cm |
4WD Wheelbase | 79.1 inches
200 cm |
Length | 135 inches (2WD)
342 cm |
137 inches (4WD)
347 cm | |
Width | 72.8 inches
184 cm |
74.2 inches (2WD Low Profile)
188 cm | |
72.8 inches (4WD Low Profile)
184 cm | |
Ground clearance | 18.9 inches (2WD)
48 cm |
15.9 inches (4WD)
40 cm | |
15 inches (2WD Low Profile)
38 cm | |
14 inches (4WD Low Profile)
35 cm | |
Front tread | 55.1 to 78.7 inches
139 to 199 cm |
Rear tread | 59.3 to 74.8 inches
150 to 189 cm |
Kubota M4030 Weight | |
|---|---|
2WD | 4078 lbs
1849 kg |
4WD | 4806 lbs
2180 kg |
Ballasted | 7375 lbs
3345 kg |
Kubota M4030 Height | |
|---|---|
Hood | 55.1 inches
139 cm |
51.2 inches (2WD Low Profile)
130 cm | |
53.1 inches (4WD Low Profile)
134 cm | |
Exhaust | 88.5 inches
224 cm |
Tests
Nebraska Tractor Test 1594 | |
|---|---|
Diesel 8-speed 4WD
May 12 - 22, 1986
Link: Nebraska Tractor Test 1594 file | |
PTO performance | |
Power at rated engine speed | 44.05 hp
32.8 kW |
Fuel use | 2.7 gal/hour
10.2 l/hour |
Power at rated PTO speed | 44.08 hp
32.9 kW |
Fuel use | 2.6 gal/hour
9.8 l/hour |
Drawbar performance | |
Max power | 36.53 hp
27.2 kW |
Fuel use | 2.6 gal/hour
9.8 l/hour |
Max pull | 5,673 lbs
2573 kg |
Attachments
Attachment overview | |
|---|---|
Kubota M1000 loader | |
Kubota M1870A loader |
Photos
Kubota M4030 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Kubota M4030 based on its 48 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard 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 Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 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 M4030.
Estimated Continuous Field Runtime: 6.8 hrs
Approximately 6.8 hours of continuous field operation at ~75% rated power on a full tank (16.9 gal / 64 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 M4030 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota M4030.
Converted Equivalents:
Horsepower (HP)48 hp
Kilowatts (kW)35.8 kW
Metric Horsepower (PS / CV)48.7 PS
Direct Competitor Comparison
Compare Kubota M4030 against same-era industry alternatives in the same horsepower class.
Current Model
Kubota
Kubota M4030
Engine Power:Diesel (listed): 48 hp / 35.8 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 500
Engine Power:43.5
Production Years:1965 - 1969
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