Think its stolen? Is it a unike nr for each engine? Thought the only unike ID was on the frame, so it doesnt make sense.. Maby to fool a buyer?
Im trying to find out who was the second-last owner, hes the one that made the mix, but its not easy. Last owner dont have the papers with his name anymore.
Back to bike;
There is a shoulder on the inside of the sprocket.
The 6 mm spacer fits inside oilseal when centered. It was stuck in a groove, off-center, wearing on the clamp holding the oilseal in place, and making the sprocket come out too much.
Maby its that spacer following the sprocket that I miss. There is ca 3 mm from there the teeth starts to the sprocket, and between the teeth and the threads there is a gap/groove. Now the nut go in past the treads, just spinning in that groove.. So I guess something is missing..
But It might be an 89 3aj.. I can try that.