Kubota GB20 Specifications & Model Guide
Overview
| Item | Details |
|---|---|
| Model | Kubota GB20 |
| Series | GB Series |
| Production Years | 1997 – 2001 |
| Tractor Type | Sub-Compact Utility Tractor |
| Manufacturer | Kubota (Japan) |
| Engine Power | 19.7 hp (14.7 kW) |
| Drive System | 4WD |
| ROPS | Two-post ROPS |
| Variants | GB20F (Glideshift model) |
Model Description
The Kubota GB20 is the most powerful model in the GB Series from its generation.
Featuring a robust 1.1L 3-cylinder diesel engine and optional Glideshift transmission, the GB20 delivers strong performance for orchard work, vegetable fields, vineyards, landscaping, and general small-farm operations.
Its compact frame allows it to work efficiently in tight spaces while offering enough power for heavier rotary tillers and field attachments.
Engine
| Specification | Details |
|---|---|
| Engine Manufacturer | Kubota |
| Engine Type | 4-stroke, 3-cylinder diesel |
| Displacement | 1.1 L (approx. 1100 cc) |
| Power Output | 19.7 hp (14.7 kW) |
| Fuel Type | Diesel |
| Fuel Tank Capacity | 5.3 gal (20.1 L) |
| Cooling System | Liquid-cooled |
| Aspiration | Natural |
| Cylinders | 3 |
Engine Notes
The 1.1L Kubota diesel engine provides higher torque than other GB Series models, making the GB20 suitable for heavier soil conditions and deeper tillage.
Its reliable cooling and efficient combustion system allow long hours of continuous operation with low fuel consumption.
Transmission
| Specification | Details |
|---|---|
| Standard Transmission | 6-speed gear |
| Optional Transmission | 18-speed (multi-range) |
| Special Variant | GB20F Glideshift (clutchless shifting) |
| Drive | 4WD |
| Steering | Power steering |
| Brakes | Mechanical wet disc brakes |
Transmission Notes
The 6-speed gear transmission is simple and durable, while the Glideshift model allows smoother clutchless shifting—ideal for repetitive forward–reverse tasks such as loader work or maneuvering in orchards.
PTO & Hitch
| Specification | Details |
|---|---|
| Rear Hitch Type | Category 0 |
| Hitch Control | Position control |
| Rear PTO Speeds | 451 / 769 / 1207 rpm (1.375″ spline) |
PTO Notes
The wide PTO speed range allows compatibility with various compact implements including rotary tillers, mowers, sprayers, pumps, and other small tools widely used in commercial farming.
Dimensions & Tires
| Specification | Details |
|---|---|
| Wheelbase | 53.2 in (135 cm) |
| Weight | 1,543 – 1,587 lbs |
| Front Tire | 6.00-12 |
| Rear Tire | 8.3-22 |
Dimension Notes
With a slightly longer wheelbase and heavier weight than smaller GB models, the GB20 offers improved stability when using larger rear implements while still maintaining excellent maneuverability between narrow crop rows.
Serial Number Location
| Location | Description |
|---|---|
| Serial Tag | Located on the right side of the tractor frame, above the front axle |
Electrical
| Specification | Details |
|---|---|
| Ground | Negative |
| Battery Voltage | 12 V |
Photos
| Kubota GB20 | Description |
|---|---|
| Photo available | Sub-compact tractor used in orchards, vineyards, vegetable fields, and small farm operations |
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