I agree that the boost pumps are only there for initial starting, once running the engines are quite capable of drawing fuel from the tank.
But.... Have you ever lost prime in a 76? What a pain in the backside when you lose prime on the engines.
And John is correct, there is no Xfeed in the 169, so if OEI that 200 liters is not available to you. 200 liters on the good side when OEI is 35 minutes flying at max power.