Hey guys! I’m replacing my fuel shutoff on my 31 model a. Does the gas tank have to be empty to do so? I see it threads right off, maybe just sneak a bolt onto the gas tank to stop it from pouring out?
Yes drain it completely. Even then have a pan under it to catch the little bit remaining. You do not want gas on your floor mat. Do not screw a bolt into the drain hole. Wrong thread.
I drained mine by removing the fitting from the carb and extending it with a rubber hose to drain into a 5-gallon gas can. That will save you a lot of grief of you don't drain it. as stated by others, you will still get some when you actually take the valve off, so I guess I am just saying what everyone else has.
After you drain as much gas as you can get out of it, block up the RH side of the car about 4" so any remaining gas will shift away from the shutoff valve, before removing the valve.