ok as this has never been covered as far as i know here is 2 simple ways of removing all of the fuel from an F or TF
you could try to do through the fuel filler but with the spring loaded cap and then the bends in the metal pipe etc it will prove hard to get to the bottom of the tank so here are 2 alternatives
1st use the fuel pump to empty the fuel tank
if you disconnect the outlet of the fuel filter and connect a hose to it and then the other end of the pipe into the fuel container
this is the fuel filter
once you have made sure that the pipe is secured go to the ignition switch and switch on the ignition the pump will start pumping the petrol out , sometimes the system will cut the pump if the pressure is insufficient so you will need to disconnect the puel pump supply cables and connect direct to the battery (follow the photos later for a better idea) this will get the pump to run all the time. To stop pumping switch off the ignition or disconnect the battery
alternative by using pipe and sucking the fuel out
remove the parcel shelf carpet and you will see the engine inspection hatch and also a round metal disc that covers the fuel tank connections
remove the cover and you will see this
now you see the clapsing ring has been removed, now disconnect all pipes then lift the sender and fuel pump up
insert the syphoning pipe and drain fuel into a suitable fuel container
once done refit all the pipes ensuring that there is no fuel leaks
Note - some times the seal ring is worn so best to get a new one if the car is to be used again
as the fuel tank is of an odd shape make sure you get to the deepest part to remove all the fuel
please note this is a guide and i take no responsability if any problems or damage occurs
regards mark