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(1) Fuel pump Fuel pump is located in the fuel tank with a mesh filter on pump inlet. The rotor is 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 (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 System Fig3 Quick Coupler Removing
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