The filter from the dealer is a little over 20 bills and that would be the best way to go. Pop the cap off the gas outlet, undo the top and botton 12mm I believe nuts and your good to go. Just have a towel or rag stuffed under what you are undoing, there will be a little bit of fuel but nothing major. Before you break the top nut though, draw a line w/a marker so you know when to stop tightening, there is a fuel hole that needs to line up. Piece of cake, good luck!!!