You're looking at an ignition advance mechanism whose locating pin is bent. I read about this for years on forums before I ever saw one. Why anyone would continue to try to rotate a crankshaft whose pistons are rusted to the cylinders is a mystery. But there it is. There really is no such thing as common sense.

Another issue in the same area of the bike. The "not" symbol is my addition. This is comical. If I didn't know that people actually do this, I would consider it a gag. Unfortunately, it is real enough. And how many of these hexes I have seen all chewed up! No conscientous person would ever use an adjustable wrench on such a vulnerable part.