One other thing, if your determined to replace the fuel accumulator change the fuel pump check valve too while your down there getting sprayede with gas. Make sure you replace all the copper crush valves too. If your fuel hoses are original I suspect they are very hard and may be difficult to compress to pinch off the flow of fuel form the tank as you disconnect the hoses. If thats the case, I wouldnt mess with pinching those hoses for fear of cracking them, that a whole other can of worms. instead wait until your tank is almost empty, syphon off what ever is left and have a container underneath to catch all the excess that will pour out once you start disconnecting hoses.
if you can pinch your hoses, (I used a couple of C-claps) make sure you release the pressure on the tank by opening the fuel cap first)
Oh, yea one other thing, leave the smokes in the house.