Daniel he's not referring to the chain failing (breaking). He means if the front of the cutter catches in something, the rear of the cuter could flip up and over (pivoting on the lift arms) and strike the operator.

I understand what he's saying, but I've never heard of it happening. I'm not familiar with using chain for a top link but I have seen chain used for the link from the top of the hitch back to the rear of the cutter. Same purpose. It would allow it to ride up without binding.

That's the real purpose of the floating hitch link. It allows the rear of the cutter to float free (move up and down) without binding up on your top link. I agree with the previous poster that you need to put a bolt and a sleeve (look for a Cat 1-2 sleeve in the hitch pin section) and otherwise it is hooked up right.

As stated above, set the cutter with the front about an inch lower than the rear and the tail wheel on the ground. All of that tilt is achieved through the top link.