Scooterotica

I cant seem to find the right way of putting the ignition cam on the crankshaft, the key way is offset to either the right side (turn the can around ) or the left side ?????? i didnt realise this and it has to be right of course because once the ive put the cam on the crank it wont come off very easily ......Please help

Lato esterno = the outside.
Why they line up the E with the corner of the woodruff slot is a mystery. Prime spot for a crack.