The Kubota ZD28 machine engine horsepower found is 28 hp. PTO horsepower found is 24 hp.
Engine HP28 hp
PTO HP24 hp
Power / weight18.9 hp per 1,000 lb
Kubota ZD28 Horsepower Specs
Engine horsepower
28 hp
PTO horsepower
24 hp
Rated engine RPM
3,000 rpm
Engine torque
54.5 lb-ft (74 Nm)
Engine displacement
67.1 cu in (1.1 L)
Engine cylinders
3 cylinders
Engine
Kubota 1122cc
Operating weight
1,481 lb (672 kg)
PTO-to-engine ratio
85.7% of engine horsepower
Power-to-weight
18.9 hp per 1,000 lb
Horsepower class
mid-power mower / garden tractor
Horsepower Benchmarks
Engine horsepower benchmark
This model
28 hp
Average
23 hp
Low
12 hp
High
40 hp
PTO horsepower benchmark
This model
24 hp
Average
18 hp
Low
8 hp
High
35 hp
Operating weight benchmark
This model
1,481 lb
Average
1,200 lb
Low
500 lb
High
2,600 lb
Power-to-weight benchmark
This model
18.9 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 ZD28 Horsepower FAQ
Engine horsepower
The Kubota ZD28 machine engine horsepower found is 28 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota ZD28 is 24 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota ZD28 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 ZD28 is 3,000 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota ZD28 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 ZD28 include Kubota 1122cc, 67.1 cu in (1.1 L) displacement, and 3 cylinders.
Operating weight
The operating weight found for the Kubota ZD28 is 1,481 lb (672 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 ZD28 is 85.7% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota ZD28 is 18.9 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
The practical split on the Kubota ZD28 is engine power at 28 hp and PTO power at 24 hp.
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.
