Is there a drain on the carburator float bowl? Some have one. If so you
*might* be able to drain the gas tank completely using that drain. If not perhaps you can just remove the float bowl and let the gas run out of it.Personally I've usually found it easiest to remove the fuel line just past the fuel shut-off valve which makes it easy to empty the gas tank into a gas can but in my case I've always been able to access that particular part of the fuel line.