this works on a brand new piece of equipment, this does not work very often on older equipment, especially when trying to remove older and more brittle fuel lines
I've found several fuel line kits online, but none of them will say what size the fuel line is... I'm thinking its 1/8".. but it seems like there are 2 different sizes. If you google fuel line kit for BR600 or whichever model you have, it should bring up something.