2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 50Get this manual
TECHNICAL FEATURES FUEL SUPPLY SYSTEM The fuel supply system is composed of the fuel tank, sub fuel tank, fuel hoses, fuel vapor return hose, throttle body, and injectorWhile riding in bumpy conditions, the fuel supply from the fuel tank may be unstable because of changes in the vehicle attitudeTo stabilize the supply of fuel, this system is equipped with sub fuel tank between the fuel tank and tbrcttie bodyThe fuel pump and pressure regulator are located inside the sub fuel tank
The fuel hose has quick connector at the sub fuel tank jointBefore disconnecting tile quick connector, always relieve the
fuel pressure (page 6-32)
FuEL TANK
SUB FUELTANKFUEL PUMP
- PRESSURE REGULATOR
THROTTLE BODY
OPERATION