....................and ordinary jubilee clips can crush small fuel hose out of shape causing leaks. If there are any of those type of clips the flexible hose should be renewed and proper fuel pipe hose clips used. They are thinner metal with a small bolt and nut, and don't have the worm drive. Oh, and while on the subject, much of the fuel hose on sale is not resistant to bioethanol, and will perish in a couple of years or even less. And I'm afraid I don't know how to be sure of getting long lasting petrol fuel hose...............I don't do petrol.