I dont believe there is a drain plug in the tank. I use a small electric fuel pump I run off a separate battery. NAPA, cheap. Tip the quad to the left a bit, stick the hose down in the tank and the other end in a waste container and flip the switch. I've never tried to disconnect the fuel line at the injector and pump it out that way but I would think that could be done easy enough. :smilietwocents: