Be careful pumping gas. The vapors are heavier than air and very flammable.
I have two pumps for cleaning tanks. One is a 117volt AC current for diesel fuel only. For gas, I use a 12 volt DC Stewart Warner pump made for gas. I do not do this work anymore due to health problems, but will loan you my pump, barrels, hose and filters, if you promise to return them soon and replace them if you break them.
I recently helped a friend pump about 50 gallons out of his fixed tank using the 12 volt pump outside the boat with a long hose and pumping into a clean plastic barrel. We could not access the gauge sender or fill, so pumped from the regular connection to the motor. We removed the check valve, first. Pumped all of the gas we could get out, then added StarBrite's fuel tank cleaner and about a gallon of fuel, let it set overnight, then cycled it out of the motor pick up back into the fill for a half hour or so.
Then we pumped this into a container for proper disposal, hooked up the pump to suction through two heavy duty Fram water seperator/filters and back into the tank. At $3 a gallon, yes!
He carries spare filters, but has not had to use them yet, even after a fast trip down to Applachacola in the rotton WX last week.
Call me if you want to use my pumps, barrels, and filters.
Tom 572-1225