difficult if you don`t have a ramp,but follow the two pipes up to the top of the tank with your left hand,o/s front corner,you will feel the two connections onto the tank unit,flow and return,it is the red connection you want to get off which I think is the one nearest the o/s,press the two lugs in and the pipe should pull off(they can be tight)if you get it off you can attach a length of 5/16 rubber hose to the pipe and syphon off the contaminated fuel,as a previous post has said you may get away with it if you can get plenty of neat diesel into the tank,good luck
cdc, November 2011