Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 104Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 104

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Fuel Pump Operation 1 The fuel pump is diaphragm pump which is mechanically driven off of the rocker arm2 The black mounling block (insulator) helps prevent vapor lock3 If the engine runs out of fuelo