This accessory is required when you use tow-behind attachments like the transport sulky or the utility trailer. It helps to stabilize and balance your tractor. Its fits onto the tractor’s tow hitch and allows towed implements to rotate side-to-side, but not up and down.
Because the tow hitches are differ in size between some of the tractor models, this coupler is available in two sizes: one for models 718 to 732, and another for models 749 and up.