I was short in my pocket again so I bought a two teeth extra sprocket for my 75o paso from wemoto uk problem is I get the wheel out and the sprocket is or seems to be connected to the hub wich slots into the main hub of the wheel making it turn! wemoto told me its seized on and should remove but the new one is just a sprocket? there are just nuts on the inside so if the original came off the what secures the new one? hope someone can understand this out there Im at a loss not for the first time either!.....desmodave

did you look at the exploded views in the parts manual ?