HP requirement for Bush Hog X2512R?

[Chaostamer]

I have a new NH T4.75 and looking at a Bush Hog X2512R for a mower (12'). I cannot find specs on minimum tractor HP for this unit. Anyone have that information?

 

[Roadworthy]

Rule of thumb is five horsepower per foot of mower diameter. If what you're mowing isn't too dense and you go slow you can get by with a little less.