Yamaha YZF-R125 Service Manual: Checking the fuel pressure

Yamaha YZF-R125 Service Manual / Fuel system / Fuel tank / Checking the fuel pressure

1. Check:

  • Pressure regulator operation

a. Remove the fuel hose connector cover "1" and disconnect the fuel hose "2" from the fuel pump.

CAUTION:

Although the fuel has been removed from the fuel tank, be careful when removing the fuel hose, since there may be fuel remaining in it.

NOTE:

Before removing the hose, place a few rags in the area under where it will be removed.

Checking the fuel pressure


b. Connect the pressure gauge "3" and fuel pressure adapter "4".


Checking the fuel pressure


c. Start the engine.

d. Measure the fuel pressure.


Faulty Replace the fuel tank (with fuel pump).

e. Connect the fuel hose and install the fuel hose connector cover.

Refer to "INSTALLING THE FUEL HOSE" on page 7-2.

    Installing the fuel hose
    1. Install: Fuel hose Fuel hose connector cover CAUTION:When installing the fuel hose, make sure that it is securely connected, and that the fuel hose connector cover is in t ...

    Throttle body
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