The Kubota ZD25 machine engine horsepower found is 25 hp. PTO horsepower found is 20.9 hp.
Engine HP25 hp
PTO HP20.9 hp
Power / weight15.1 hp per 1,000 lb
Kubota ZD25 Horsepower Specs
Engine horsepower
25 hp
PTO horsepower
20.9 hp
Rated engine RPM
3,000 rpm
Engine torque
54.5 lb-ft (74 Nm)
Engine displacement
61 cu in (1 L)
Engine cylinders
3 cylinders
Operating weight
1,660 lb (753 kg)
PTO-to-engine ratio
83.6% of engine horsepower
Power-to-weight
15.1 hp per 1,000 lb
Horsepower class
mid-power mower / garden tractor
Horsepower Benchmarks
Engine horsepower benchmark
This model
25 hp
Average
23 hp
Low
12 hp
High
40 hp
PTO horsepower benchmark
This model
20.9 hp
Average
18 hp
Low
8 hp
High
35 hp
Operating weight benchmark
This model
1,660 lb
Average
1,200 lb
Low
500 lb
High
2,600 lb
Power-to-weight benchmark
This model
15.1 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 ZD25 Horsepower FAQ
Engine horsepower
The Kubota ZD25 machine engine horsepower found is 25 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota ZD25 is 20.9 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota ZD25 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 ZD25 is 3,000 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota ZD25 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 ZD25 include 61 cu in (1 L) displacement and 3 cylinders.
Operating weight
The operating weight found for the Kubota ZD25 is 1,660 lb (753 kg). Weight matters because the same horsepower feels different in a light mower than in a heavy tractor.
PTO-to-engine horsepower ratio
The PTO-to-engine horsepower ratio for the Kubota ZD25 is 83.6% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota ZD25 is 15.1 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
When comparing the Kubota ZD25, engine horsepower is the headline figure, while PTO horsepower is the better implement-sizing figure.
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.
