CADplans
Elite Member
CADplans I found the weight specs:
JD370: 904 lbs
JD390: 1093 lbs
That's interesting because that was not something I had even considered being a problem for the 4 series tractors.
I use the 1,100 pound flail behind a ~8,000 pound tractor (it weighs about 10,000 with the loader,,)

The IH 584 really knows the flail mower is behind it,, the tractor is REAL easy to steer with the flail lifted,,
Power-wise, the 584 has plenty of PTO horsepower for normal mowing,, a half ton on the three point hitch arms is a LOT,,,
you are talking about pulling a flail with a tractor half the weight of the one I use,,
that is why I voiced the concern about tractor size,,