Nice Rig./w3tcompact/icons/wink.gif An overrunning coupler a ratchet mechinisn that attaches to the PTO shaft that keeps the spining Hog from pushing the tractor. It can be pretty uncomfortable to have the tractor keep moving when you want to stop. Agri Supply (1-800-345-0169) sells them for $33.49. Agri Supply sends out a nice mini catalog if you ask them. A slip clutch replaces the shear bolt and protects the tractor from sudden implement stops like when you hit a stump.
Chris