1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 139Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 139

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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