no fuel to carb Honda 4013 riding mower?

this unit has been sitting for a few years, trys to strat when gas poured into carb but seems like no fuel coming from tank\. \new fuel in the tank. I tried blowing compressed air down fuel line from the carb, pulled flex hose from carb attach. Would not blow thru , so plugge dor a one way valve in the line? Any thoughts\/