You should be able to replace the line in the gas tank but you must use Tygon otherwise it will just rot and fall apart within a few months. Usually there is a connector on the outside of the tank that unscrews and the hose inside is attached to that. Not sure on that snowmobile though. Either way Tygon and then the weighted fuel filter on the end of it towards the back of the tank at it's lowest point to pick up all the fuel it can.