The Kubota Z421T machine engine horsepower found is 24 hp. PTO horsepower found is also 24 hp.
Engine HP24 hp
PTO HP24 hp
Power / weight27.6 hp per 1,000 lb
Kubota Z421T Horsepower Specs
Engine horsepower
24 hp
PTO horsepower
24 hp
Rated engine RPM
3,000 rpm
Engine torque
54.2 lb-ft (74 Nm)
Engine cylinders
2 cylinders
Engine model
D1105
Operating weight
870 lb (395 kg)
Power-to-weight
27.6 hp per 1,000 lb
Horsepower class
mid-power mower / garden tractor
Horsepower Benchmarks
Engine horsepower benchmark
This model
24 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
870 lb
Average
1,200 lb
Low
500 lb
High
2,600 lb
Power-to-weight benchmark
This model
27.6 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 Z421T Horsepower FAQ
Engine horsepower
The Kubota Z421T machine engine horsepower found is 24 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota Z421T is 24 hp. Confirm this against the operator manual because PTO output is often lower than engine horsepower.
Horsepower class
The Kubota Z421T 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 Z421T is 3,000 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota Z421T is 54.2 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 Z421T include D1105 and 2 cylinders.
Operating weight
The operating weight found for the Kubota Z421T is 870 lb (395 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 Z421T is 27.6 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
When comparing the Kubota Z421T, use 24 hp as the headline engine figure and double-check the PTO rating before sizing 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.
