I cut a piece of the fuel line about 3/16 and pull it over the lines from the tank, then I slip the fuel line onto the brass tube then slip/slide the small piece of line along the main line until it too is over the tube. Shazam, it's tight and will stay on, easier then using nylon zip ties. If you want a photo I can take a few for you. Being a YS guy I like to make sure my lines are on tight and aren't going to blow off. Most YS people use this little trick.