Just picked up this old Cenex tractor yesterday. Runs pretty good and even has the original seat without any cracks. Needs a little TLC but looks like it will clean up really nice. The hydro is surprisingly stout. The biggest issue is the frame is cracking in front of the front axle and needs to be reinforced. I don't know if it's a common issue but I think the stress of steering with a loose center pivot greatly contributed to the cracking.
It is model 130-760-095 and I am having a hard time finding a manual or parts list. I think I read that the -095 stands for Cenex. I haven't checked the engine serial for a model year yet but I'd guess late 70s - early 80s. It's pretty neat for a low end MTD model and should make a nice mower for the summer.