Pull a Sunflower 20 foot soil finisher with the harrow on heavy ground. Have problems getting it to lift and fold. Have to restrict flow. The valve that switches from lift to fold clicks but does let flow thru.
Hook the harrow to our JD7800 planting tractor and it works just fine.
What's the difference between JD 7800 and CIH 7130 hydraulics?
We may have to put a manual lift-fold valve on it.