I don’t know what to say other than if that is your Bush Hog you posted a picture of in post#46 then your blades are attached to a part called a stump jumper, by the same pins the gentleman torched off in the video.Did you bother to watch the vid YOU posted? It clearly shows that the blades are NOT attached to the stump jumper.
Also, MY Woods cutters do not have the blades attached with threaded pins/nuts like he torched off in the vid, either.
SR
The stump jumper, and pins are clearly visible in the photo you posted.
My lawn mower blades are not attached to a stump jumper, neither is. Anyone else’s.