Mercury Optimax 75, 90, 115, DFI starting year 2004 service manual., Page 161Get this manual

Mercury Optimax 75, 90, 115, DFI starting year 2004 service manual., Page 161

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PULSE CRANKCASE DRIVEN FUEL PUMP
The fuel pump is crankcase-pressure-operated, diaphragm type pumpCrankcase pulsating pressure (created by the up and down movement of piston) is transferred to f