What direction does the fuel flow into a weed-eater primer bulb?

Answer 1

Well, I just figured out why my Toro Weedwacker wouldn't run, The fuel hoses were backward, My brother had it for a while then told me it stopped running. He apparently tried to FIX it but accidentally reversed the fuel lines so.
1. Fuel comes out of the tank and goes directly into the bottom of the Carb,
2. Fuel is pulled through the carb from the side tube on the carb into the priming bulb.
3. Once the priming bulb is full the fuel is then returned directly to the tank through a hose which protrudes into the tank about 2 ".
4. Ran fine after I got the hook up correct.