Even a seasoned A.S.E. mechanic may have never touched a small engine, mini bike, gokart or anything the like, I reached into my 30s as a very experienced mechanic before I learned small engines at all, maybe not laziness but instead being uninformed. And when mentioning a gokart on Google 9/10 times it leads back to this forum, so apparently folks ARE Google searching, not to mention this site is primarily pre-teens, teens and dads fixing up toys, hobyists, not pros for the majority. Simple solution, if you can't keep from making people feel bad about asking a question you feel to be petty, read another thread, or don't comment derogatory and degrading things, most of us frown on that type of behavior here.
---------- Post added at 01:25 PM ---------- Previous post was at 01:19 PM ----------
You are correct, that bushing would make it too far out from the engine to work without coming apart, it almost looks like the axle was flipped at some point and maybe the axle sprocket should be on the right instead, or the jackshaft may be backward and needs to be in front of the engine.
Does that jackshaft have sprockets on both ends or just one?