Kubota
Kubota B5100
The Kubota B5100 is a sub-compact utility tractor produced from 1978 to 1984 by Kubota in Japan. It features a 12 hp liquid-cooled 2-cylinder diesel engine, a 6-speed unsynchronized transmission, and is available in both 2WD and 4WD variants. The tractor offers mechanical rear differential lock, manual steering, mechanical wet disc brakes, and an open operator station with an optional two-post fixed ROPS. It has a rear Type I hitch with a 300 lbs lift capacity and PTO options including rear transmission-driven 540/1000 and front 3000 RPM PTO. The B5100 is designed for versatility in small-scale farming and landscaping tasks.
Power12 hp
Founded1978 - 1984
ModelB5100
Technical Specifications
Detailed specifications and technical data for Kubota B5100
Power
| Engine power | 12 hp (8.9 kW) |
|---|---|
| PTO (claimed) | 10 hp (7.5 kW) |
Tires
| Ag rear | 7.00-16 |
|---|---|
| Ag front | 4.00-9 (2WD), 4.50-10 (4WD) |
| Lawn/turf rear | 27x8.50-15 |
| Lawn/turf front | 18x6.50-8 |
Engine
| Type | diesel |
|---|---|
| Model | Kubota Z500-1A |
| Power | 12 hp (8.9 kW) |
| Cooling | liquid-cooled |
| Cylinders | 2-cylinder |
| Fuel tank | 2.1 gal (7.9 L) |
| Rated RPM | 3000 |
| Bore/Stroke | 2.625x2.75 inches (67 x 70 mm) |
| Pre-heating | glow plugs |
| Displacement | 31 ci (0.5 L) |
| Starter power | 1.1 hp (0.8 kW) |
| Starter volts | 12 |
| Coolant capacity | 3.2 qts (3.0 L) |
| Engine oil capacity | 2.4 qts (2.3 L) |
| Oil change interval | 75 h |
Dimensions
| Width | 36.25 inches (92 cm) |
|---|---|
| Length | 71.6 inches (181 cm) |
| Wheelbase | 46.5 inches (118 cm) |
| 2WD Weight | 805 lbs (365 kg) |
| 4WD Weight | 893 lbs (405 kg) |
| Rear tread | 25/29 inches (63/73 cm) |
| 2WD Front tread | 26 inches (66 cm) |
| 4WD Front tread | 26.4 inches (67 cm) |
| Height (steering wheel) | 44.1 inches (112 cm) |
| 2WD Clearance (rear axle) | 10.25 inches (26 cm) |
| 4WD Clearance (front axle) | 8.625 inches (21 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery AH | 35 |
| Battery volts | 12 |
Hydraulics
| Type | open center |
|---|---|
| Pump flow | 3.17 gpm (12.0 lpm) |
Mechanical
| Drive | Two- or four-wheel drive |
|---|---|
| Brakes | Mechanical wet disc brakes |
| Steering | Manual |
| Operator station | Open operator station. Two-post fixed ROPS available. |
| Differential lock | mechanical rear |
Production
| Type | Sub-Compact Utility tractor |
|---|---|
| Built in | Japan |
| Variants | B5100DT 4WD, B5100E 2WD |
| Manufacturer | Kubota |
| Years produced | 1978 - 1984 |
Transmission
| Type | unsynchronized gear |
|---|---|
| Gears | 6 forward and 2 reverse |
| Clutch | dry disc |
| Description | Three gears, plus reverse, in two ranges. |
| Oil capacity | 9.0 qts (8.5 L) |
Tractor hitch
| Rear Type | I |
|---|---|
| Rear lift capacity | 300 lbs (136 kg) |
Power Take-off (PTO)
| Rear PTO | transmission |
|---|---|
| Rear PTO Type | 540/1000 |
| Front PTO Type | 3000 |