You'll need a 17mm socket and a breaker bar. Remove the air cleaner box and you can access the belt tensioner easier. Turn the 17mm bolt ( sits around the 8 o'clock position) counter clock wise and remove the old belt. If you don't have a diagram,draw one before you replace the belt !! If you don't have a breaker bar a short pipe on a socket wrench will do.It will take a little coaxing but you'll do fine. Make sure the belt is on all the pulleys and you're done !!