Introduction
Field Boss 31 Compact Utility Tractor
The Field Boss 31 is a compact utility tractor produced between 1986 and 1988. Manufactured by Iseki and distributed under the White brand, this machine was designed to provide a versatile power solution for agricultural tasks and property maintenance.
Engine Specifications
The tractor is powered by a 1.5-liter, 3-cylinder Isuzu liquid-cooled diesel engine. It generates 30 horsepower (22.4 kW) at a rated speed of 2600 RPM. The engine features a 21.4:1 compression ratio and a bore/stroke of 3.39 by 3.39 inches.
Transmission and Drive
The drivetrain consists of a triple-sync, partially synchronized transmission offering 12 forward and 4 reverse gears. It was available in both two-wheel drive and four-wheel drive configurations. Steering is manual for 2WD models, while 4WD versions benefit from power steering for improved maneuverability.
Hydraulics and PTO
The hydraulic system utilizes an open-center design with a total flow capacity of 7.7 gpm (29.1 lpm) and a system pressure of 2135 psi (147.2 bar). The tractor features an independent rear PTO (540 RPM) and a live front PTO (2600 RPM) to support a variety of implements.
Dimensions and Weight
The tractor is built on a 65-inch wheelbase with an overall length of 116 inches. The shipping weight is 2215 lbs for the 2WD model and 2414 lbs for the 4WD version. It is equipped with mechanical wet disc brakes and a two-post ROPS structure as standard.
Conclusion
The Field Boss 31 is a functional utility tractor suited for small-scale farming and landscaping operations. Its combination of a synchronized gear system, hydraulic capacity, and compact dimensions makes it a practical choice for tasks requiring a balance of power and agility.
Production Information of White, Field Boss 31
- Original price was $9,000 in 1988
- Compact Utility tractor
| Distributor | White |
|---|---|
| Manufacturer | Iseki |
Dimension and Tires Information of White, Field Boss 31
| 2WD Front tread | 37.8 to 41.7 inches [96 to 105 cm] |
|---|---|
| Wheelbase | 65 inches [165 cm] |
| 2WD Shipping weight | 2215 lbs [1004 kg] |
| Height (exhaust) | 80 inches [203 cm] |
| Length | 116 inches [294 cm] |
| 4WD Front tread | 41.3 inches [104 cm] |
| 4WD Shipping weight | 2414 lbs [1094 kg] |
| Width | 52 inches [132 cm] |
| Rear tread | 40.2 to 52.8 inches [102 to 134 cm] |
| 2WD Standard tires (ag) | Front: 5.00-15. Rear: 11.2-24 |
|---|---|
| Lawn/turf rear | 355x800-20 |
| 4WD Lawn/turf front | 212x800-15 |
| 4WD Standard tires (ag) | Front: 7.00-16. Rear: 11.2-24 |
| 2WD Lawn/turf front | 24x8.50-12 |
Engine Specifications of White, Field Boss 31
- Isuzu
- Liquid-cooled inline
- Diesel
- 3-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 91.4 ci [1.5 L] |
| Compression | 21.4:1 |
| Bore/Stroke | 3.39x3.39 inches [86 x 86 mm] |
| Idle RPM | 850-2860 |
| Rated RPM | 2600 |
| Power | 30 hp [22.4 kW] |
Transmission Information of White, Field Boss 31
Transmission variants 1
- Three synchronized gears in four ranges.
| Transmission | Triple-sync |
|---|---|
| Type | Partially synchronized |
| Gears | 12 forward and 4 reverse |
Mechanical Specs of White, Field Boss 31
- Two- or four-wheel drive
- Two-post ROPS. Optional canopy and radio.
- Mechanical wet discs brakes
| 2WD Steering | Manual |
|---|---|
| 4WD Steering | Power |
Power Information of White, Field Boss 31
| Rear PTO | Independent |
|---|---|
| Front PTO Type | 2600 |
| Rear PTO Type | 540 (1.375) |
| Front PTO | Live |
Hydraulics Specifications of White, Field Boss 31
| Type | Open center |
|---|---|
| Pressure | 2135 psi [147.2 bar] |
| Total flow | 7.7 gpm [29.1 lpm] |
Three-Point Hitch of White, Field Boss 31
| Rear Type | I |
|---|
Electrical System of White, Field Boss 31
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 35 |
Where it sits
With 30 HP, the White Field Boss 31 sits between Field Boss 21 (21 HP) and Field Boss 37 (37 HP) in White's range. Its power puts it in the 22th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the White Field Boss 31 have?
The White Field Boss 31 delivers 30 HP.
What years was the White Field Boss 31 produced?
The White Field Boss 31 was produced in 1986-1988.
What engine does the White Field Boss 31 have?
The White Field Boss 31 is powered by a Diesel, 3-cylinder engine.
What transmission does the White Field Boss 31 use?
The White Field Boss 31 uses a Triple-sync transmission.
How much does the White Field Boss 31 weigh?
The White Field Boss 31 weighs 2215 lbs [1004 kg].
Is the White Field Boss 31 4WD?
The White Field Boss 31 is available in 2WD/4WD.