1975 Johnson 4HP 4R75, 4W75 Outboards Service Repair Manual P/N JM-7503, Page 16Get this manual

1975 Johnson 4HP 4R75, 4W75 Outboards Service Repair Manual P/N JM-7503, Page 16

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DESCRIPTION FUEL FLOW The fuel system consists of fuel tank, fuel pump, and carburetorThe fuel tank is non-pressurized, suction operatedA diaphragm-displacement type fuel pump on the motor draws fuel