You don't really need to cut off the fuel unless you're changing the fuel pump, etc. If you're replacing the fuel pump all you need to do is take off the negative battery cable & disconnect the fuel shut-off relay located in the fuse box which is on the right side of the motor looking at the steering wheel from the the front. After you remove the fuel relay start the motor & wait for it to turn off. This will take the pressure out of the lines. Then to remove the lines push in on none end at a time & pull out vat the same time to disconnect the line.