UtilityPerformance profile
Kubota B5100
The Kubota B5100 is a small utility tractor made from 1978 to 1984. It's a 2WD model with a compact size, measuring 71.6 inches long, 36.2 inches wide, and 44.1 inches tall. This tractor is very light, weighing only 805 pounds, making it easy to move around small farms or gardens. The B5100 has a Kubota Z500-A1 diesel engine with two cylinders. It's not very powerful, with just 12 horsepower, but it's enough for light tasks. The engine runs at a very high 3000 RPM and has a small displacement of 31 cubic inches. It has a 6-speed forward and 2-speed reverse transmission, which gives it good control at different speeds. The tractor has a three-point hitch at the back that can lift up to 310 pounds, which is below average for tractors. It also has a PTO (Power Take-Off) that can run at 540 or 1000 RPM, useful for powering attachments.
ManufacturerKubotaPower12 hpEngine2-cylTransUnsynchronized gear
Quick specs
- Category
- Utility
- Engine Power Output
- 12hp
- Operating Weight
- 805 lb
- Transmission
- Unsynchronized gear
At a glance
How the B5100 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
12 hp · 1st
This model
9
Median 55 hp
177
This modelUtility tractorsMediann = 5,383
The B5100 ranks at the 1st percentile for engine power among recorded utility tractors.
Overview
About the Kubota B5100
The Kubota B5100 is a small utility tractor made from 1978 to 1984. It's a 2WD model with a compact size, measuring 71.6 inches long, 36.2 inches wide, and 44.1 inches tall. This tractor is very light, weighing only 805 pounds, making it easy to move around small farms or gardens. The B5100 has a Kubota Z500-A1 diesel engine with two cylinders. It's not very powerful, with just 12 horsepower, but it's enough for light tasks. The engine runs at a very high 3000 RPM and has a small displacement of 31 cubic inches. It has a 6-speed forward and 2-speed reverse transmission, which gives it good control at different speeds. The tractor has a three-point hitch at the back that can lift up to 310 pounds, which is below average for tractors. It also has a PTO (Power Take-Off) that can run at 540 or 1000 RPM, useful for powering attachments.
Full specifications
Every recorded spec
General
| Manufacturer | Kubota |
|---|---|
| Model | B5100 |
| Category | Utility tractor |
| Type | 4x2 2WD |
| Years built | 1978–1984 |
| Operating weight | 805lb |
Engine
| Make | Kubota |
|---|---|
| Model | Z500-A1 |
| Power | 12hp |
| Cylinders | 2 |
| Displacement | 31ci |
| Bore | 2.68in |
| Stroke | 2.76in |
Transmission
| Type | Unsynchronized gear |
|---|---|
| Forward gears | 6 |
| Reverse gears | 2 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Manual, Ball screw type |
| Brakes | Internal-expanding type, right and left independent with interlock device |
| Cab | Open operator station with two-post ROPS |
Hydraulics
| Type | Open center |
|---|
Power take-off
| Rear PTO | Transmission |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 71.6in |
|---|---|
| Width | 36.2in |
| Height | 44.1in |
| Operating weight | 805lb |
Tires
| Front | 4.00-9 |
|---|---|
| Rear | 7.00-16 |
Capacities
| Cooling system | 0.8gal |
|---|
Head to head
B5100 vs. Utility median
How the Kubota B5100 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 12 hp | 55 hp | -78% | 1st |
| Engine Displacement | 31 ci | 183 ci | -83% | 1st |
| Cylinders | 2 | 4 | -50% | 3rd |
| Forward Gears | 6 | 12 | -50% | 11th |
| Operating Weight | 805 lb | 5,303 lb | -85% | 1st |
| Length | 71.6 in | 137 in | -48% | 1st |
| Width | 36.2 in | 66 in | -45% | 1st |
| Height | 44.1 in | 94.1 in | -53% | 1st |
| 3-Point Hitch Capacity | 310 lb | 3,197 lb | -90% | 1st |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 1,083–5,720 models).
Compare to tractors with similar specs
Commonly compared Kubota tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Kubota B1121 | 11.8 hp | 1,323 lb | 2018+ | Compare → |
| Kubota B1220 | 11.8 hp | 1,014 lb | — | Compare → |
| Kubota XB-1 | 11.8 hp | 1,080 lb | — | Compare → |
| Kubota B4200 | 12.5 hp | 970 lb | 1987–1996 | Compare → |
| Kubota GB13 | 12.9 hp | 1,157 lb | 1997–2001 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Bolens 3212G | 12 hp | 463 lb | 1987–1992 | Compare → |
| Bolens 3212H ST120 | 12 hp | 463 lb | 1988–1992 | Compare → |
| Cub Cadet 1200 | 12 hp | 648 lb | 1974–1980 | Compare → |
| Cub Cadet 1210 | 12 hp | 586 lb | 1985–1989 | Compare → |
| Cub Cadet 122 | 12 hp | 798 lb | 1965–1967 | Compare → |
Explore
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Gallery
Kubota B5100 photos
FAQ
Common questions
When was the Kubota B5100 in production?
Kubota B5100 production started in 1978 and ended in 1984.
What type of hydraulic system does the Kubota B5100 use?
Hydraulics on the Kubota B5100 are Open center.
What size tires does the Kubota B5100 use?
Factory rubber for the Kubota B5100 is 4.00-9 front tires and 7.00-16 rear tires.
What hitch category is the Kubota B5100?
The Kubota B5100 uses a Category I hitch with a lift capacity of 310 lb.
How much horsepower does the Kubota B5100 have?
The Kubota B5100 produces 12 hp from its 2-cylinder engine. Engine displacement is 31 ci.
How much does the Kubota B5100 weigh?
The Kubota B5100 weighs about 805 lb in operating condition.
What transmission is in the Kubota B5100?
Transmission on the Kubota B5100 is Unsynchronized gear, with 6 forward speeds.
What maintenance does the Kubota B5100 require?
Like any tractor, the Kubota B5100 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.