Ford NAA, Ford 2810, Ford 3910-1, Ford 3910-2, Ford 4600SU, Massey 2660 HD, Massey 461, Grasshopper 725D, Grasshopper 900D
well not sure but not sure why i would want to go that high as PTO speed is just 1850. Is there a particular reason why you ask? I basically ran the rpms around 1400 when i was trying to lift the front of the tractor last time. At idle it will not do it but anything above idle seems to work ok.
Yeah I have never operated a loader before and dumb enough didn't think about needing enough engine rpm to the move the pump fast enough to build hydraulic pressure. Anyway just a little over idle does fine and 1400 rpms and up kicks butt. I absolutely love this tractor. Its a amazing machine.