Fuel line with filter on from the tank goes to the elbow on the carb ( elbow nearest to the pump cover held with one screw ) the pipe from the other carb elbow ( elbow nearest to the metering cover held with four screws ) goes to the suction side of the fuel bulb ( shortest pipe on the primer ) the hose from the longest pipe on the primer goes back to the tank, just remember the bulb pulls fuel from the carb and pushes it back into the tank, not the other way round.
Husqvarna man, April 2010