Thanks. in". Ironically, the manual warns of some tractors with a PTO brake, but no warning of hydraulic driven PTOs. . i.e. "if the genny was mounted on a slab, I might be complaining of a broken PTO shaft, gearbox, or worse."
One other thing about this genny is that it is billed as being voltage regulated, that voltage stays constant regardless of load on the device. On startup, there is no load, so does that mean the field is on full and as a result much more magnetic load to overcome which contibuted to the crushing force applied to the trailer?