I recently purchased a non running 7600. After correcting the issues I was able to get it running and serviced the engine and hydraulic system but I noticed the 3 point hitch isn't lifting and the pto isn't working. The dual power is functioning and the remote valve seems to be working as well. The pto lever seems to move pretty loosely but does click into both the on and off position. I can turn the pto with the tractor not running although it was tight at first. The tractor set up for close to 4 years before I purchased it and the hydraulic oil had a milky color to it when I changed it, although I believe it could have been condensation in the housing.