hey man just take that black nut off of your crank and leave the aluminum spacer thats on the engine. then you put the flywheel on WITHOUT the collet k you done need that collet the hole in the flywheel is just the right size to go over the crank then you put your pilot nut on sound good? I just took mine apart and that how she goes honest man its a great whywheel and helps with the revs alot.