The fuel tank basically comes off without any tools once the seat is removed (which is a matter of 2 bolts). When draining old fuel from any motorcycle save yourself a whole bunch of time and do it right. Remove the tank and shake it upside down. Doing this takes less than 5 minutes and gets it over quickly. Draining it from the fuel petcock won't get all the fuel out and will have you on your knees smelling fuel for a half hour.
Don't lose any of the fuel tanks rubber grommets. They aren't so easy to make and will cost you $15-$30 and your time waiting for the new ones to come in the mail. It would be nice to have some new ones but I could re-use the old ones luckily.