i took a look at the microfiche. airbox, fuel tank, oil tank and oil pump breakdowns. appears as though the oil lines do tee into the fuel line prior to the fuel pump. why there are 2 oil lines into the fuel i dont know.
oil should flow from the tank to the oil pump and the oil pump to the fuel. if your pump is working and the system is bled of air, premix the fuel in the tank until your sure the system is working.