I have the 46 FX on mine. My memory is a little sketchy, but I recall using some needle nose pliers to slip the fuel line on. After that, I left it there, because I also ran a third line to the fuel tank for fueling. I installed just enough line to be able to grab it and remove a Dubro fuel line plug for fueling. The third fueling line just dangle out the top behind the engine. A fuel dot, fastened to one of the cheeks, would probably be a neater more reliable method though. But that engine takes up a lot of space. There are fueler valves also, that connect in line with the fuel line (tank to carb).