Some time ago I replaced the float inside the fuel level sender. I didn’t drain the fuel, just took out the whole assembly and temporarily closed off the tank with plastic. It is a lousy job working in the boot through a small hatch and over a pool of petrol but it can be done. Make sure you do this outside or in a very well ventilated space. Be very careful not to stress the other hoses there eg the one going to the top of the tank for venting air to while filling. I had a fuel leak there while filling up and it took removing the rear axle to get that sorted.
Reply To: Draining Old Fuel from TankJohan Vlagsma2016-05-19T14:41:13-06:00