An old timer showed me a trick that might help you, may want to wear some safety glasses or just be careful not to get anything into your eyes. spray some carb cleaner into the over flow tubes on both bowels using the straw for a good 5 seconds,then fill the bowels with gas through the over flows until full. Pump the pedal a few times to see if any thing is squirting. If not dump some gas down the carb have someone bump the key to fire it up, soon as it fires bump the throttle to bring the rpms up and use a towel to choke the carb. It should suck fuel right through the jets.
