Ken he's got a X300 lawn tractor. Not the older prior to 1992 300 series tractor which is shown in your link. He would need a sleeve hitch to use that boxscrape. :thThumbsU
The X300 is not rated for ground engaging equipment. The closest you can get is a plug aerator. If you did try to pull a box scraper you would need some serious rear wieght or you will loose traction quickly due to the turf tires and light duty transmission. I wouldn't recommand this because you'll be seriously over working the K46.
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