Quick answer:
The John Deere Z645 tractor has 27 hp engine horsepower and 27 hp PTO horsepower.
Engine horsepower27 hp
PTO horsepower27 hp
Drawbar horsepower22.5 hp
Rated RPM3,600 rpm
Torque91 lb-ft
John Deere Z645 Horsepower Details
| Engine horsepower | 27 hp |
|---|---|
| PTO horsepower | 27 hp |
| Drawbar horsepower | 22.5 hp |
| Rated engine RPM | 3,600 rpm |
| Engine torque | 91 lb-ft |
Horsepower Comparison Chart
Engine horsepower comparison
PTO horsepower comparison
Drawbar horsepower comparison
John Deere Z645 Extra Horsepower Notes
| Horsepower note | The John Deere Z645 has almost no visible gap between the listed engine horsepower and PTO horsepower ratings. |
|---|---|
| PTO note | With 27 hp at the PTO, the John Deere Z645 is best matched to finish mowing, light-duty rotary cutting, light tilling and small utility PTO jobs; heavy hay tools, large augers and high-load PTO equipment are not the natural match for this power class. |
| Drawbar note | For plows, ground tools and pull-type loads, the John Deere Z645’s 22.5 hp drawbar horsepower says more than engine horsepower alone. |
| Engine note | Engine details for the John Deere Z645 come together as rated at 3,600 rpm. |
| Torque / RPM note | The John Deere Z645 combines 91 lb-ft of torque with a 3,600 rpm rated engine speed, which fits a higher-revving compact or utility engine setup. |
Official information note
Mistakes do happen. Horsepower, PTO horsepower, drawbar horsepower, weight and engine specs can change by year, market, engine option, cab, transmission and test standard. Please check the operator manual and official deere.com website for official information.







