Heading out this weekend for an atv trip and need to get my sportsman up and running. Is a 1999 Polaris Sportsman 500. The battery has plenty of life and the starter kicks in trying to start. The atv doesn't turn over or even attempt to start, it just wines and then stops when I let my thumb of the starter. I feel like it is an issue with the spark plug but can't seem to locate one. I am use to Honda, which are very easy to work on. Any and all help would be appreciated.