Originally Posted by duibhceK

nothing comes out of the tank without the fuel pump running. there will be a little bit of fuel coming out of the tube, but nothing major.
Emptying the tank before doing it only serves to make it lighter. A full tank of fuel is pretty hard to handle especially while you need to wiggle all the plugs and hoses off. I've never bothered to do it though. But I also avoid filling up the tank before having to remove it.