The Kubota Z231KH machine engine horsepower found is 21 hp. PTO horsepower found is also 21 hp.
Engine HP21 hp
PTO HP21 hp
Power / weight28 hp per 1,000 lb
Kubota Z231KH Horsepower Specs
Engine horsepower
21 hp
PTO horsepower
21 hp
Rated engine RPM
3,600 rpm
Engine displacement
45.6 cu in (0.75 L)
Engine cylinders
2 cylinders
Operating weight
749 lb (340 kg)
Power-to-weight
28 hp per 1,000 lb
Horsepower class
mid-power mower / garden tractor
Horsepower Benchmarks
Engine horsepower benchmark
This model
21 hp
Average
23 hp
Low
12 hp
High
40 hp
PTO horsepower benchmark
This model
21 hp
Average
18 hp
Low
8 hp
High
35 hp
Operating weight benchmark
This model
749 lb
Average
1,200 lb
Low
500 lb
High
2,600 lb
Power-to-weight benchmark
This model
28 hp/1k lb
Average
20 hp/1k lb
Low
12 hp/1k lb
High
35 hp/1k lb
Benchmarks are general reference ranges for lawn and garden tractors and mowers.
Kubota Z231KH Horsepower FAQ
Engine horsepower
The Kubota Z231KH machine engine horsepower found is 21 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota Z231KH is 21 hp. Confirm this against the operator manual because PTO output is often lower than engine horsepower.
Horsepower class
The Kubota Z231KH is listed as mid-power mower / garden tractor based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota Z231KH is 3,600 rpm. This is the engine speed used for the listed power rating.
Engine specs found
Engine specs found for the Kubota Z231KH include 45.6 cu in (0.75 L) displacement and 2 cylinders.
Operating weight
The operating weight found for the Kubota Z231KH is 749 lb (340 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 Z231KH is 28 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
For the Kubota Z231KH, engine horsepower and PTO horsepower are both listed as 21 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.
