(1) Fuel pump
Fuel pump is located in the fuel tank with a mesh filter on pump inlet. The rotor is
driven by motor whose power is supplied by relay. A pressure relief valve is installed on
pump, which cut off fuel supply and suction to avoid motor overheat when pipe pressure is
above 7 bar. Pump operates under fuel temperature is within -30℃～+70℃ and normal
flow rate is 90L/Hr under 12 voltage.
ECU control pump through relay as followings:
－When ignition key is turned on for 2 seconds, engine off, pump start to operate;
－When engine is operatingand vehicle is running , pump operates continuously;
－When engine speed is lower than a specified value (about 50rpm), pump stops
operating.
(2) Fuel pressure regulatorFuel pressure regulator is inside the fuel tank, calibrated at
3.5bar fixed pressure.
(3) Fuel filter
Fuel filter is located outside of fuel tank. The fuel filter consists of housing and low
filter core of high filtering quality. Due to fuel injector is excessively sensitiveto foreign
materials in fuel feed circuit, fuel filter is a necessary part to engine’s normal operating.
Note：Arrowhead is marked on the housing of fuel filter, indicating the flowing direction
of gasoline. During installing, fuel filter is not allowed to install in a reverse direction.
Otherwise, the fuel filter must be replaced with a new one.
Replace fuel filter every 2000-3000km.
(4) Quick coupler
The fuel pump inlet and outlet is connected to fuel pipe
via a quick coupler, red quick coupler connects to outlet and
white quick coupler connects to inlet.
Removing quick coupler as shown in Fig 3.
* Hold the seat collar, push fuel pipe inward as arrow
Pressure regulator
1. fuel pipe 2. fuel return pipe 3.fuel tank 4.fuel filter 5.fuel pump 6.fuel injector 7.
Fig.2 Oil Supply Syste
Fig3 Quick Coupler Removing
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