Shcwinn hub

Can someone tell me what I would need to know to dismantle my hub and
what to look for as far as what may need replacing. It is cotter-less
and has snap rings. Outside of that I am not to sure on this, as I have
never tried this. Any advise would be helpful. Also is it just me or is
there a severe lack of unicycle riders in Central / Western

                                            Paul D. Spencer