Kubota B21 Specs, Price, Weight, Attachments, Review [2024]

Are you looking to buy a Kubota B21? But you need to know more about Kubota B21 specs, Weight, Price, lifting capacity, oil capacity, and Review.

In this post, you can find out more. On the internet, it’s tough to find accurate and detailed information about Kubota B21 Specs, Weight, Price, and Reviews.

So, our team went to several Kubota showrooms, got all the information, and put it all together in an easy way to read and understand.

Let’s check it out…

Kubota B21 Specs, Price, Weight, Attachments, Review

Kubota B21 Specs, Price, Oil Capacity, Lifting Capacity, Weight, Attachments, Reviews

The Kubota B21 is a compact backhoe loader tractor. It is designed for various tasks, such as landscaping, mowing, and light-duty construction. Kubota B21 is a popular choice for homeowners and small businesses because of its versatility and durability.

Key features and benefits of the Kubota B21:

  • A Kubota diesel engine creates 21.4 PS (15.7 kW; 21.0 HP) at 2600 rpm.
  • Lightweight and maneuverable
  • Fuel-efficient
  • A variety of attachments are available
  • Hydrostatic power steering
  • Wet disc-type brakes
  • Four-post ROPS/FOPS
  • Live rear PTO, with 540 RPM

The Kubota B21 is an excellent choice for anyone who requires a versatile and durable compact tractor. It is perfect for various tasks, from lawn mowing to digging trenches.

Kubota B21 Price New

The approximate price of a new Kubota B21 is $25,000.

Kubota B21 Top Speed

The Kubota B21 has a top speed of 12.6 mph (20.3 km/h).

Kubota B21 Weight

The Kubota B21 weighs 1,810 kg (3,990 lbs).

Kubota B21 Horsepower

The Kubota B21 has a 21 HP gross horsepower engine.

Kubota B21 Oil Capacity

The Kubota B21 has an engine oil capacity of 3.0 liters (3.2 quarts).

Kubota B21 Lifting Capacity

The Kubota B21 has a lifting capacity of 460 kg (1,014 lbs) at 24 inches (610 mm) behind the lift points.

Kubota B21

Kubota B21 Specs


Engine model Kubota D1005
Displacement 1.0 L, 1,001 cm2, (61.1 cu·in)
Max. horsepower 21.4 PS (15.7 kW; 21.0 HP) at 2,600 rpm
Cooling system Liquid-cooled
Coolant capacity 3.4 L (3.6 US. qt, 3 Imp. qt.)
PTO shaft rotation Counterclockwise
Starting system Electric starting with 12V starter
 type 4-stroke, SOHC, three-cylinders
Starting support device Glow plug in combustion chamber
Fuel used Diesel fuel
Governor All speed mechanical governor
Bore and stroke 76.0 mm x 73.6 mm (3.0 in x 2.9 in)
Charging system Alternator 12V

General Specifications

Model Kubota B21
Production years 2001-2007
Tractor type Backhoe-loader tractor

Valve clearance

Exhaust valve clearance 0.145-0.185 mm (0.0057-0.0073 in)
Intake valve clearance 0.145-0.185 mm (0.0057-0.0073 in)

Dimensions and weight

Weight 1,810 kg (3,990 lbs)
Wheel base 1,530 mm (60.2 in)

Oil system

Lubrication system Forced lubrication by trochoid pump
Recommended oil SAE 10W-30, 10W-40
Oil pressure At idle speed: 49 MPa (0.5 kgf/cm2, 7 psi)
At rated speed: 196 to 441 MPa (2.0-4.5 kgf/cm2, 28 to 64 psi)
Oil pressure indicating Electrical type switch
Oil type CF or higher
Oil capacity 3.0 L (3.2 US. qt, 2.6 Imp. qt.)
Oil filter Full flow paper filter (Cartridge type)
Oil and oil filter change interval Every 200 hours

Fuel capacity

Fuel tank capacity 23.0 liters (6.1 US gal.; 5.1 Imp. gal)


 manufacturer or model
Gears Infinite (3-range) forward and reverse
Transmission oil capacity 27.6 L (7.3 US. gal, 6.1 Imp. gal.)
 type Hydrostatic
Speed Forward: 17.9 kmh (11.1 mph)
Reverse: 17.9 kmh (11.1 mph)

Fuel system

Fuel injection pump Bosch MD type mini fuel injection pump
Firing order 1-2-3
Injection nozzle Mini Nozzle (DNOPD)
Injection pressure 13.73 MPa (140 kgf/cm2, 1,991 psi)


Rear tires Industrial: 12.4-16
Front tires Industrial: 23×8.50-14

Chassis, steering and brakes

Chassis 4×4 MFWD 4WD
Brakes Wet disc type
Steering type Hydrostatic power
Final drive Mechanical rear

Three-Point Hitch

Control type Position control
Category I
Lift capacity (at 610 mm/ 24 in) 460 kg (1,014 lbs)

Electrical system

Charging system
Battery 12V
Ground Negative
Charging amps

PTO(Power take-off shaft)

Rear PTO speed 540 rpm
Rear PTO type Live

Hydraulik System

Hydraulic capacity 27.6 L (7.3 US. gal, 6.1 Imp. gal.)
Steering flow 1.3 gpm (4.9 lpm)
Hydraulic type Open center
Pump flow 7.1 gpm (26.9 lpm)
Total flow 8.4 gpm (31.8 lpm)

Kubota B21 Attachments

Kubota backhoe

2-Foot flat digging depth 2,320 mm (91.7 in)
Bucket force 1,410 kg (3,110 lbs)
Bucket width 400 mm (16 in)
Reach from pivot 3,080 mm (121.3 in)
Dipperstick force 792 kg (1,748 lbs)

Kubota loader

Height (to pin) 2,550 mm (88.8 in)
Rollback angle 40°
Lift to full height (at pin) 420 kg (926 lbs)
Bucket width 1,420 mm (56 in)
Dump angle 45°
Breakout force (lift) 700 kg (1543 lbs)
Raise time to height 3 s

Kubota B21 Problems

  • Engine overheating: This can be caused by several factors, such as a clogged radiator, a low coolant level or a faulty thermostat.
  • Transmission problems: These can include problems slipping gears, shifting gears, and grinding noises.
  • Electrical problems: These can include blown fuses, dead batteries, and faulty wiring.
  • Hydraulic problems: These can include leaks, slow or erratic operation, and overheating.
  • Fuel problems: These can include dirty fuel injectors, clogged fuel lines and faulty fuel pumps.

Kubota B21 Review 

The Kubota B21 has earned its popularity as a sought-after subcompact tractor, celebrated for its unwavering reliability, rugged durability, and impressive versatility. Whether it’s landscaping, light construction, or farming, this tractor proves to be an excellent choice for a wide array of tasks. For a full review, please check this YouTube video Here.

Final Words

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FAQs: Kubota B21

What kind of engine does the Kubota B21 have?

The Kubota B21 has a 3-cylinder, 1.0L diesel engine that produces 21 hp.

What kind of transmission does the Kubota B21 have?

The Kubota B21 has a hydrostatic transmission.

What is the Kubota B21’s PTO horsepower?

The Kubota B21’s PTO horsepower is 13.5.

What is the Kubota B21’s maximum lift capacity?

The Kubota B21’s maximum lift capacity is 1,350 lbs.

What kind of attachments are available for the Kubota B21?

A wide variety of attachments are available for the Kubota B21, including mowers, tillers, loaders, backhoes, and snow blowers.

What is the Kubota B21’s fuel tank capacity?

The Kubota B21’s fuel tank capacity is 23.0 liters (6.1 US gal.; 5.1 Imp. gal).

What is the Kubota B21’s wheelbase?

The Kubota B21’s wheelbase is 60.6 inches.

What is the Kubota B21’s ground clearance?

The Kubota B21’s ground clearance is 11.8 inches.

What are the dimensions of the Kubota B21?

The Kubota B21 is 108 inches long, 57 inches wide, and 79 inches tall.

What is the Kubota B21’s weight?

The Kubota B21 weighs 1,810 kg (3,990 lbs).

What is the approximate price of a new Kubota B21?

The approximate price of a new Kubota B21 is $25,000.

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