What is the PTO horsepower difference between the John Deere 9R 390 and 8R 410 Tractor?
The John Deere 9R 390 has a PTO horsepower of 335 hp and the John Deere 8R 410 Tractor has a PTO horsepower of 310 hp, a difference of 25 hp. The John Deere 9R 390 has the higher PTO horsepower.