How do you drain 306 fuel tank?

To drain a 306 fuel tank, first ensure the vehicle is turned off and parked in a well-ventilated area. Disconnect the fuel pump fuse or relay to prevent the engine from starting. Use a siphon pump or a fuel transfer pump to extract the fuel from the tank through the fuel line or access the tank directly by removing the fuel sender unit. Always follow safety precautions, including wearing gloves and goggles, and properly dispose of the drained fuel.