The fuel hose in the tank with the filter on the end goes to the carb elbow nearest to the pump cover ( cover held with on screw ) the other elbow on the carb goes to the suction side of the primer bulb, the pressure side of the primer takes fuel back to the tank. Just remeber the primer pulls fuel from the carb, and returns it back to the tank, not the other way round
Husqvarna man
June 2010