Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 104Get this manual
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FUEL FUEL PUMP
Step ProcedurePart name FUEL PUMP DISASSEMBLY Screw Fuel pump cover Diaphragm Fuel pump body ass'y Pin Plunger Plunger spring Diaphragm spring Diaphragm Fuel pump body Nut FUEL PU