Dennis, You can get both owners and shop manuals from the Floyd County  Museum @641-228-1099. Also if you give them the serial number they have build sheets for your tractor. Getting these will make your project a lot easier. To engage the pto you push the lever back until it snaps in and forward to disengage it, likely the lever is rusted to the brake cross shaft. A lot of times the seals on the rock shaft leak and run down the brake housings and make it look like the brake seals are leaking.  
  How do you post your pictures? I am not very computer savvy.  Thanks, Chuck