lol, god I miss the days owners for these atv's thought the cam chain adjuster bolt was the one they got ahold of, and pulled the oil drain bolt out..rofl. first, you need to locate the CORRECT bolt to remove ?, then you need a small threaded tool, such as a motorcycle spoke ?, it has to thread into the very inside of the hole, you pull down on this, then tighten the outer lock nut if my memory is still good ?. honda did this on a lot of the early atcs back in the day. you should locate this in the service manual somewhere ?.