White Field Boss 31

The White Field Boss 31 is a tractor produced by White. It is equipped with a 91.4 ci 1.5 L engine. The listed engine power is Diesel (listed): 30 hp / 22.4 kW. Transmission: Triple-sync. Drive type: 4x2 2WD. Operating weight: 2215 to 2414 pounds.

Engine Power

Diesel (listed): 30 hp / 22.4 kW

Drive & Traction

4x2 2WD

Fuel & Capacities

7.4 gal 28.0 L

Transmission

Triple-sync

Operating Weight

2215 to 2414 pounds

Overview

	1986 - 1988 Compact Utility tractorIseki built Compact Utility tractor Iseki built

Production
Distributor	White
Manufacturer	Iseki
Compact Utility tractor
Original price was $9,000 in 1988

White Field Boss 31 Engine
Isuzu 1.5L 3-cyl diesel
Fuel tank	7.4 gal 28.0 L
Engine details ...

White Field Boss 31 Transmission
12-speed partially synchronized
Transmission details ...

White Field Boss 31 Power
Engine	30 hp 22.4 kW
PTO (claimed)	25 hp 18.6 kW

Mechanical
Drive	4x2 2WD
	4x4 MFWD 4WD optional
Steering	manual (2WD)
	power (4WD)
Mechanical wet discs brakes
Two-post ROPS. Optional canopy and radio.

Hydraulics
Type	open center
Pressure	2135 psi 147.2 bar
Total flow	7.7 gpm 29.1 lpm

Tractor hitch
Rear Type	I

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540
Front PTO	live
Front PTO Type	2600

Dimensions & Tires
Wheelbase	65 inches 165 cm
Weight	2215 to 2414 pounds
Front tire	5.00-15
Rear tire	11.2-24 (2WD)
Full dimensions and tires ...

Electrical
Charging system	alternator
Charging amps	35
Battery volts	12

References

1100 Series Front End Loaders published in 1987, by White
Field Boss 31 published in 1986, by White

Engine

Engine Detail — 91.4 ci / 1.5 L Diesel

Manufacturer	Isuzu
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled
Displacement	91.4 ci 1.5 L
Bore/Stroke	3.39x3.39 inches 86 x 86 mm
Power	30 hp 22.4 kW
Compression	21.4:1
Rated RPM	2600
Idle RPM	850-2860
Starter volts	12

Transmission

Transmission — Triple-sync

Transmission	Triple-sync
Type	partially synchronized
Gears	12 forward and 4 reverse
Three synchronized gears in four ranges.

Dimensions

White Field Boss 31 Tires
Standard tires (ag)	Front: 5.00-15. Rear: 11.2-24 (2WD)
	Front: 7.00-16. Rear: 11.2-24 (4WD)
Lawn/turf front	24x8.50-12 (2WD)
	212x800-15 (4WD)
Lawn/turf rear	355x800-20

Dimensions
Wheelbase	65 inches 165 cm
Length	116 inches 294 cm
Width	52 inches 132 cm
Height (exhaust)	80 inches 203 cm
2WD Shipping weight	2215 lbs 1004 kg
4WD Shipping weight	2414 lbs 1094 kg
Front tread	37.8 to 41.7 inches 96 to 105 cm (2WD)
Front tread	41.3 inches 104 cm (4WD)
Rear tread	40.2 to 52.8 inches 102 to 134 cm

Attachments

Attachment overview
White 1045QA loader
White 1155 QA loader
Rear mowers for the Field Boss 31 included finishing (48, 60, or 72 inch), flail (50 or 60 inch), and rotary cutters (48 or 60 inch). Rear blades in 5 or 6 foot widths, plus a 4.5 foot box scraper could be fitted. PTO-drive tillers were available in 40, 52, or 60 inch widths.

Photos

White Field Boss 31 tractor. Marketing photo.

Recommended Implements & Sizing Guide

Engineering recommendations for White Field Boss 31 based on its 30 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	5 ft (60 in)1.5 m	Medium Duty	Pasture maintenance and weeds up to 1.5" diameter.
Rotary TillerSeedbed Prep	54 to 60 in135 - 150 cm	Medium Duty	Thorough seedbed preparation in orchards and vegetable plots.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

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 White Field Boss 31.

Estimated Continuous Field Runtime: 4.7 hrs

Approximately 4.7 hours of continuous field operation at ~75% rated power on a full tank (7.4 gal / 28 L).

Estimated 75% Load Fuel Burn~1.6 gal/hr (5.9 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