Quick answer:
The Kubota KL40Z tractor engine horsepower found is 39 hp. PTO horsepower found is also 40 hp.
Engine HP39 hp
PTO HP40 hp
Power / weight9.7 hp per 1,000 lb
Kubota KL40Z Horsepower Specs
| Engine horsepower | 39 hp |
|---|---|
| PTO horsepower | 40 hp |
| Rated engine RPM | 2,600 rpm |
| Engine displacement | 134.3 cu in (2.2 L) |
| Engine | 2.2L |
| Operating weight | 4,001 lb (1,815 kg) |
| Power-to-weight | 9.7 hp per 1,000 lb |
| Horsepower class | mid-size compact tractor horsepower |
Horsepower Benchmarks
Engine horsepower benchmark
PTO horsepower benchmark
Operating weight benchmark
Power-to-weight benchmark
Benchmarks are general reference ranges for compact tractors.
Kubota KL40Z Horsepower FAQ
| Engine horsepower | The Kubota KL40Z tractor engine horsepower found is 39 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO. |
|---|---|
| PTO horsepower | The PTO horsepower found for the Kubota KL40Z is 40 hp. Confirm this against the operator manual because PTO output is often lower than engine horsepower. |
| Horsepower class | The Kubota KL40Z is listed as mid-size compact tractor horsepower based on the engine horsepower found. |
| Rated engine RPM | The rated engine speed found for the Kubota KL40Z is 2,600 rpm. This is the engine speed used for the listed power rating. |
| Engine specs found | Engine specs found for the Kubota KL40Z include 2.2L and 134.3 cu in (2.2 L) displacement. |
| Operating weight | The operating weight found for the Kubota KL40Z is 4,001 lb (1,815 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 KL40Z is 9.7 hp per 1,000 lb based on the engine horsepower and operating weight found. |
| Horsepower planning note | For the Kubota KL40Z, engine horsepower and PTO horsepower are both listed as 39 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.

