Suzuki GA413 Service Manual page 398

: Fuel flow
1. Fuel pump 6. Relief valve
2. Fuel suction filter 7. 2-way check valve
3. Fuel filter 8. Fuel cut valve
4. Fuel level gauge 9. Fuel pump ass'y
5. Tank pressure
control valve
1. Vacuum relief valve (if equipped)
2. Gasket
FUEL PUMP ASSEMBLY (WITH FUEL FIL-
TER, LEVEL GAUGE, FUEL CUT VALVE AND
TANK PRESSURE CONTROL VALVE)
Fuel pump assembly consists of fuel pump, fuel filter, fuel sender
(level) gauge (sensor), fuel cut valve and tank pressure control
valve.
Fuel Pump
When power is supplied to fuel pump, motor in pump assembly ro-
tates impeller.
This causes a pressure difference to occur between both sides of
impeller as there are many grooves around it. Then fuel is drawn
through inlet port, and with its pressure increased it is discharged
through outlet port.
Fuel Cut Valve
Fuel cut valve consists of float and spring. It allows only fuel vapor
to flow into canister and prevents fuel from flowing into canister.
Tank pressure control valve (relief valve and 2-way check
valve)
Tank pressure control valve maintains inner pressure of fuel tank
constant to prevent fuel from blowing out and fuel tank from being
deformed. Relief valve is provided to prevent discharged pressure
in fuel tank from rising excessively and 2-way check valve is pro-
vided to maintain pressure in fuel tank at a constant level so that
fuel will not blow out or tank will not be deformed.
FUEL FILLER CAP
A ratchet tightening device on threaded fuel filler cap reduces the
chances of incorrect installation, which would prevent sealing fuel
vapors.
After gasket on fuel filler cap and filler neck flange contact, ratchet
produces a loud clicking noise, indicating the seal has been set.
This cap has a vacuum relief valve inside (if equipped).
Vacuum relief valve opens to relieve vacuum created in fuel tank.
ENGINE FUEL 6C-3