Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 640Get this manual
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1 Fuel inlet from primer bulb 2 Engine Pulse Fuel Pump 3 Fuel line to Water Separating Fuel Filter 2-8 psi (14-55 kPa) 4 Water Separating Fuel Filter in Vapor Separator Tank (VST) Assembly 5 Fuel outl