Chain saw runs when I pump the ball then dies?

Primer bulbs pull fuel from the carb into the bulb and then back into the tank, the short pipe on the bulb is the suction side, so this is from the carb, the longer pipe on the bulb is the pressure side, so this should push fuel from the bulb back into the tank, as you push the bulb in you should see the fuel going back into the tank, as you let go the bulb you should see fuel coming from the carb into the bulb, if not you have somthing connected wrong

Husqvarna man
March 2010