Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 122Get this manual

Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 122

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Theory of Operation The fuel pump is crankcase-pressure-operated, diaphragm-type pumpCrankcase pulsating pressure is transferred by way of passage (hole) from the crankcase to the fuel pumpWhen the pi