mcculloch 3516 carb. lines?

The fuel line from the fuel tank, the one with the fuel filter on the end runs to the carb elbow, nearest the the pump cover that is held with one screw, the other pipe from the carb, nearest to the metering cover held with four screws goes to the suction side of the bulb, the pressure side of the bulb has the pipe that goes back to the tank, just remember that the bulb pulls fuel from the carb and pushes it back into the fuel tank, not the other way round,if you get the the wrong way round it will flood the carb and will not start.

Husqvarna man
April 2010