Here's what I've noodled out in the wonderful world of quick-hitches:
* AFAIK, the lower links on the HF quick-hitch is actually the correct width, or at least closer to it than some implements. According to the diagram on that LSU AgCenter page (linked on another QH thread), the MAXIMUM spacing of the implement's lower link pins, INCLUDING the "bushing" on the outboard side of each lift arm on the implement, is 26.9". The HF QH is about 26.75" out of the box. This was just about right for our KK carry-all, but the pins on the 5' rotary cutter (er, kutter) are well over 27.5", if you include the bushings. From what I've been able to determine, this accounts for why the QH commonly has to be re-spaced with a bottle jack.
* The big hangup with the top link is, at least in the case of rotary cutters, actually an issue with the implement, not the hitch.
Here's a photo illustrating the problem with my KK brush hog. The "big hook" on the QH bangs into the spacer betwen the implement's lift arms, which sits directly below the top link pin, making it impossible for the hook to position itself directly below the pin. Well, I bought the cutter used, and this is how it was configure. But guess what -- a part is missing from the hitch on the implement side. Check out
this illustration from the manual, particularly item 16, and the "inset". That squared-U-shaped bracket, with its own spacer and through-bolt, is the "swivel kit". It's supposed to hang
forward of the implement's hitch structure (the diagram shows it pointing upward, but it's gonna fall forward), and the actual hitch pin goes through the forward holes. This is actually what's needed to create the "give" in attachment necessary for traversing uneven ground, esp. valleys. But it also puts the hitch pin far enough away from the static spacer that the top hook on the QH should slither right in under it. If your cutter or other implement has this swivel, it should make the adapter (mentioned by ikymojoe above) unnecessary, as it takes its place. You can order the swivel kit from KK, but it's almost $40!!
* You
can order the HF quick-hitch adapter via their web site. From their home page, follow the "Order from Printed Catalog" link. A separate window should pop up (you may have to enable pop-ups). In the Item Number box, type "29309-0VGA", and select "Add". Then you can add it to anything else you might wish to order from the main site. I'm gonna try a little trick with it. Rather than attach it to the 3PH top link directly via a pin, I'm gonna put it on the implement, put another pin through the forward end, and put the "big hook" on the QH, and see if the the big hook will engage the pin. This will approximate the swivel kit that the cutter should have had in the first place, and the hitch will work as a true "quick" hitch.
MacLawn said:
a computer forum I am a member on uses the acronym STF...
I've seen STFU, for Shut .... Up, but not just STF. Hmm, puzzle, puzzle....