I had an engine failure in a J160 in about 1994. The studs holding one of the cylinders onto the crankcase clean pulled out of the crankcase. Luckily for me, like the two young men in the video, I had a happy outcome. It would be interesting to know if the studs pulled out of the crankcase like they did for me.
Needless to say you would have to drug me to get me into one now.