chain alignment

[YFZer]

I throwed a chain off yesterday and I have noticed that my rear sprocket is not lined up with the front sprocket. The chain is not running straight. I have my chain adjusted right on both sides. I don't know if maybe the guy before me put the wrong bearings in or something. Does anyone know what it could be?

[YFZ450 11x]

It could be that your rear sprocket is mounted on the wrong side of the sprocket hub. If it were it would throw everything out of wack.

[YFZer]

Thanks Alot for the help, that is exactly what the guy had done before I got it, he had the sprocket bolted to the wrong side of the hub.