Kubota KL31Z
The Kubota KL31Z is a tractor produced by Kubota. It is equipped with a 111.4 ci 1.8 L engine. The listed engine power is Diesel (listed): 30.6 hp / 22.8 kW. Transmission: Dual Drive. Operating weight: 3626 lbs 1644 kg.
Engine Power
Diesel (listed): 30.6 hp / 22.8 kW
Fuel & Capacities
10.6 gal
40.1 L
Transmission
Dual Drive
Operating Weight
3626 lbs
1644 kg
Overview
 | 2013 - 2015
KL Kingwel Zero SeriesCompact Utility tractor
KL Kingwel Zero Series
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Kubota |
Compact Utility tractor | |
Variants | |
|---|---|
KL31Z | wheeled |
KL31Z-PC | half-track |
Kubota KL31Z Engine | |
|---|---|
Kubota 1.8L 3-cyl diesel | |
Fuel tank | 10.6 gal
40.1 L |
Engine details ...  | |
Kubota KL31Z Transmission | |
|---|---|
continuously-varaible transmission | |
Transmission details ...  |
Kubota KL31Z Power | |
|---|---|
Engine | 30.6 hp
22.8 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Mechanical wet disc brakes | |
Cab standard with air-conditioning. |
Tractor hitch | |
|---|---|
Rear Type | I |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 (1.375) |
Engine RPM | 541@2600 |
767@2600 | |
961@2600 | |
1288@2600 | |
-764@2600 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 71 inches
180 cm |
Weight | 3626 lbs
1644 kg |
Front tire | 8-16 |
Rear tire | 13.6-24 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 111.4 ci / 1.8 L Diesel
Manufacturer | Kubota D1803 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 111.4 ci
1.8 L |
Bore/Stroke | 3.4x4.0 inches
86 x 102 mm |
Power | 30.6 hp
22.8 kW |
Rated RPM | 2600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — Dual Drive
Transmission | Dual Drive |
Type | continuously-varaible transmission |
Gears | infinite forward and reverse (2-range) |
Clutch | dry disc |
Hydro-mechanical CVT. | |
 | |
Transmission — Dual Drive
Transmission | Dual Drive |
Type | continuously-varaible transmission |
Gears | infinite forward and reverse (3-range) |
Hydro-mechanical CVT. | |
 | |
Dimensions
Kubota KL31Z Tires | |
|---|---|
Standard tires (ag) | Front: 8-16. Rear: 13.6-24 |
Dimensions | |
|---|---|
Wheelbase | 71 inches
180 cm |
Length | 127.8 inches
324 cm |
Width | 60.6 inches
153 cm |
Height (cab) | 88 inches
223 cm |
Weight | 3626 lbs
1644 kg |
Ground clearance | 14.2 inches
36 cm |
Front tread | 44.5 inches
113 cm |
Rear tread | 47.4/48.6 inches
120/123 cm |
Photos
Kubota KL31Z tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Kubota KL31Z based on its 30.6 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 Kubota KL31Z.
Estimated Continuous Field Runtime: 6.7 hrs
Approximately 6.7 hours of continuous field operation at ~75% rated power on a full tank (10.6 gal / 40.1 L).
Estimated 75% Load Fuel Burn~1.6 gal/hr (6 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
Kubota KL31Z Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota KL31Z.
Converted Equivalents:
Horsepower (HP)30.6 hp
Kilowatts (kW)22.8 kW
Metric Horsepower (PS / CV)31 PS
Direct Competitor Comparison
Compare Kubota KL31Z against same-era industry alternatives in the same horsepower class.
Current Model
Kubota
Kubota KL31Z
Engine Power:Diesel (listed): 30.6 hp / 22.8 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 323
Engine Power:27.6
Production Years:1966 - 1975
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