The Kubota KL21 tractor engine horsepower found is 20.7 hp. PTO horsepower found is also 21 hp.
Engine HP20.7 hp
PTO HP21 hp
Power / weight7.2 hp per 1,000 lb
Kubota KL21 Horsepower Specs
Engine horsepower
20.7 hp
PTO horsepower
21 hp
Rated engine RPM
2,400 rpm
Engine torque
54.5 lb-ft (74 Nm)
Engine displacement
85.4 cu in (1.4 L)
Engine cylinders
3 cylinders
Engine
Kubota 1.4L
Operating weight
2,877 lb (1,305 kg)
Power-to-weight
7.2 hp per 1,000 lb
Horsepower class
subcompact / small compact tractor horsepower
Horsepower Benchmarks
Engine horsepower benchmark
This model
20.7 hp
Average
32 hp
Low
16 hp
High
60 hp
PTO horsepower benchmark
This model
21 hp
Average
25 hp
Low
12 hp
High
50 hp
Operating weight benchmark
This model
2,877 lb
Average
2,500 lb
Low
1,300 lb
High
4,500 lb
Power-to-weight benchmark
This model
7.2 hp/1k lb
Average
14 hp/1k lb
Low
8 hp/1k lb
High
25 hp/1k lb
Benchmarks are general reference ranges for compact tractors.
Kubota KL21 Horsepower FAQ
Engine horsepower
The Kubota KL21 tractor engine horsepower found is 20.7 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota KL21 is 21 hp. Confirm this against the operator manual because PTO output is often lower than engine horsepower.
Horsepower class
The Kubota KL21 is listed as subcompact / small compact tractor horsepower based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota KL21 is 2,400 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota KL21 is 54.5 lb-ft (74 Nm). Torque helps describe low-speed pulling feel, while horsepower describes power output over engine speed.
Engine specs found
Engine specs found for the Kubota KL21 include Kubota 1.4L, 85.4 cu in (1.4 L) displacement, and 3 cylinders.
Operating weight
The operating weight found for the Kubota KL21 is 2,877 lb (1,305 kg). Weight matters because the same horsepower feels different in a light mower than in a heavy tractor.
Power-to-weight
The calculated power-to-weight figure for the Kubota KL21 is 7.2 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
For the Kubota KL21, engine horsepower and PTO horsepower are both listed as 20.7 hp; confirm the PTO rating in the manual before buying PTO-driven implements.
Official information note
Mistakes do happen. Check the operator manual, service manual and official kubotausa.com website for official horsepower, PTO horsepower, engine RPM, torque and operating-weight specifications before buying implements or servicing the machine.
