I'd get a T (some hardware store NPT pipe nipples (probably 1/8 NPT) and a T would would work fine & black fittings are slightly cheaper than galvanized fittings) & T it into the neoprene fuel line between pump and the carb and get 6ft of 5/16" neoprene fuel line & run it to a big jug & idle it & it'll be empty in minutes. EDIT oops! just hit me that the gas must be bad so you would not want to be introducing it into the carb!