draw pin

I've been running my Kioti CK3510 for a few years with a land pride brush hog attachment. Suddenly, this summer, I have destroyed three of the lower 3-point draw pins. The cause is the same each time. The 7/8" nut vibrates off during mowing and with it goes the large 7/8" flat washer and...

While I'm not a total novice, I'm no tractor expert at all. My 33 HP TYM HST has held up well over the years, and I have no trouble swapping my brush hog, box blade, or rake on and off my 3 pt hitch. I bought a tiller (Shibaura RS 3147, also sold as Yanmar) for a song and a dance. I've...