Welcome to the forums. You might be on the right track. Try tapping on the starter with a hammer, while pushing the start button and see if it starts. It sounds like your starter is bad. You can buy rebuild kits and replace the brushes.
Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
Last edited by Helmut; 08-01-2010 at 11:14 AM.