The Kubota Z121S machine PTO horsepower found is 21.5 hp.
PTO HP21.5 hp
Kubota Z121S Horsepower Specs
PTO horsepower
21.5 hp
Rated engine RPM
3,600 rpm
Engine torque
48.5 lb-ft (66 Nm)
Engine displacement
45.6 cu in (0.75 L)
Operating weight
749 lb (340 kg)
Horsepower Benchmarks
PTO horsepower benchmark
This model
21.5 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
Benchmarks are general reference ranges for lawn and garden tractors and mowers.
Kubota Z121S Horsepower FAQ
PTO horsepower
The PTO horsepower found for the Kubota Z121S is 21.5 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Rated engine RPM
The rated engine speed found for the Kubota Z121S is 3,600 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota Z121S is 48.5 lb-ft (66 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 Z121S include 45.6 cu in (0.75 L) displacement.
Operating weight
The operating weight found for the Kubota Z121S is 749 lb (340 kg). Weight matters because the same horsepower feels different in a light mower than in a heavy tractor.
Horsepower planning note
For the Kubota Z121S, horsepower can vary by configuration, so confirm the exact plate/manual data before buying 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.
