2001 Mercury Mariner 50-60HP Factory Service Manual, Page 158Get this manual

2001 Mercury Mariner 50-60HP Factory Service Manual, Page 158

FUEL PUMP
Fuel Pump Operation
1The fuel pump is diaphragm pump which is mechanically driven off of the rocker arm2The black mounting block (insulator) helps prevent vapor lock3If the engine runs out of fuel, or has restriction preventing adequate fuel flow, the pump will make "clicking" noise
WARNING

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