Your Yamaha Fuel Pump is a vital little tool in ensuring that the engine gets the gas it needs. Let's take this one from the top. Your carb is mounted directly on the air intake. It uses this massive amount of flow to create a venturi effect that helps draw the fuel from the tank. In fact, at full speed, the carb can draw the gas all the way from the tank without the support of any other parts. That is how strong the suction is that the carb creates.

YAMAHA G16 GAS 1996 2002
YAMAHA G20 GAS 2000 2002
YAMAHA G21 GAS 2001 2004
YAMAHA G22 GAS 2003 2007

FUEL PUMP- G16-22.