Something is wrong, i need help!

[reptikes]

My wheel is loose where my finger is pointing. I don't know for sure but i think thats called my Hub. If so what do i need to do to fix it? Or do i need another one?
Thanks,
Mike

[MAD450r]

take the wheel off then pull the cotter pin out of the crown nut on the axle. The you can tighten it some, if it goes too far onto the axle to really put the cotter pin back in place where it will hold the nut then you'll have to buy a washer to take up the space.

[jshtex]

The first thing is to try to tighten the nut on the other end of the hub. The nut holds the hub on the axle.