This recall is limited to a small production run of 16 series tractors, and it is a simple enough thing. The cast iron rockshaft arms that rotate to lift or lower the three-point have tapered holes to accept tapered pins. My understanding is that the taper in the cast iron parts is not exactly matched to the taper of the pin. A batch were machined wrong. Honestly, I doubt it would ever create a problem. But Mitsubishi found the problem and wants it to be fixed so that years from now there are not failures of that part. I was impressed that they would do this. We have not seen even one problem manifest itself from this mis-match, but all the same it should be corrected.
The dealer should do the work. It is easy enough, but if you are a little careless you can do it wrong and have to tear the entire rockshaft assembly off to fix it. And the linkage needs to be adjusted precisely when done.