Kubota JB13
The Kubota JB13 is a tractor produced by Kubota. It is equipped with a 43.9 ci 0.7 L engine. The listed engine power is Diesel (listed): 12.9 hp / 9.6 kW. Transmission: 6 forward and 2 reverse. Operating weight: 1213 lbs 550 kg.
Engine Power
Diesel (listed): 12.9 hp / 9.6 kW
Fuel & Capacities
3.7 gal
14.0 L
Transmission
6 forward and 2 reverse
Operating Weight
1213 lbs
550 kg
Overview
![]() | 2006 - 2008
JB Bullstar SeriesSub-Compact Utility tractor
JB Bullstar Series
Sub-Compact Utility tractor |
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Production | |
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Manufacturer | Kubota |
Sub-Compact Utility tractor | |
Variants | |
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JB13 | wheeled |
JB13-PC | half-track |
Kubota JB13 Engine | |
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Kubota 0.7L 3-cyl diesel | |
Fuel tank | 3.7 gal
14.0 L |
Engine details ... | |
Kubota JB13 Transmission | |
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6-speed | |
Transmission details ... |
Kubota JB13 Power | |
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Engine | 12.9 hp
9.6 kW |
Mechanical | |
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Four-wheel drive | |
Steering | manual |
Steering | power OptOptional |
Wet disc brakes | |
Two-post ROPS. | |
Tractor hitch | |
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Rear Type | 0 |
Power Take-off (PTO) | |
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Rear PTO | 540 (1.375) |
Rear PTO Type | 551:2600 |
967:2600 | |
Dimensions & Tires | |
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Wheelbase | 50 inches
127 cm |
Weight | 1213 lbs
550 kg |
Front tire | 4.00-12 |
Rear tire | 7-16 |
Full dimensions and tires ... | |
Electrical | |
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Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 43.9 ci / 0.7 L Diesel
Manufacturer | Kubota D722 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 43.9 ci
0.7 L |
Bore/Stroke | 2.64x2.68 inches
67 x 68 mm |
Power | 12.9 hp
9.6 kW |
Rated RPM | 2600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — 6 forward and 2 reverse
Gears | 6 forward and 2 reverse |
Clutch | dry disc |
Three gears, plus reverse, in two ranges. | |
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Dimensions
Kubota JB13 Tires | |
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Standard tires (ag) | Front: 4.00-12. Rear: 7-16 |
Dimensions | |
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Wheelbase | 50 inches
127 cm |
Length | 78.7 inches
199 cm |
Width | 37 inches
93 cm |
Height | 70.1 inches
178 cm |
Weight | 1213 lbs
550 kg |
Ground clearance | 9.8 inches
24 cm |
Front tread | 30.3 inches
76 cm |
Rear tread | 28.4/30.3 inches
72/76 cm |
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Kubota JB13.
Estimated Continuous Field Runtime: 5.5 hrs
Approximately 5.5 hours of continuous field operation at ~75% rated power on a full tank (3.7 gal / 14 L).
Estimated 75% Load Fuel Burn~0.7 gal/hr (2.5 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 JB13 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota JB13.
Converted Equivalents:
Horsepower (HP)12.9 hp
Kilowatts (kW)9.6 kW
Metric Horsepower (PS / CV)13.1 PS
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- 10.7
- Production years:
- 2018 - 2026
Kubota B6000
- Power:
- 10.9
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- 1973 - 1977
Kubota XB-1
- Power:
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Kubota B5100
- Power:
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- Production years:
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Kubota B4200
- Power:
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- Production years:
- 1987 - 1996

