Honda BF75 BF100 Outboards Service Manual, Page 95Get this manual
HONDA BF75BF100
3FUEL SYSTEM
Foel Tank The foel tank assembly consists of the fuel tank (1), filler cap 121fuel connectors 13), fuel pipe 141 and primer bulb 15iSqueezing the bulb creates vacuum to prime the carburetorThe filler cap incorporates fuel gauge and breather valve to prevent leakage during transportThe fuel pipe may be disconnected at the fuel tank for easy handling
bFuel Pump
The fuel pump (6) delivers fuel from the fuel tank to the carburetor (7)The pump is diaphragm type driven by the rocker arllL The rocker arm pushes the diaphragm up and spring pressure forces it down, pumping fuel into the carburetor