Most carbs have an angled tube sticking into the air stream above the choke plate. That's the float bowl vent. Squirt 2-3 ounces of gas into that tube and it will put enough fuel into the float chamber for the accelerator pump and all the jets to get liquid gasoline. A good-working fuel pump will fill even a bone dry carburetor in a matter of a few seconds of cranking.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!