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
    ...

    Other materials:

    Replacing the rear brake pads
    NOTE: When replacing the brake pads, it is not necessary to disconnect the brake hose or disassemble the brake caliper. 1. Remove: Brake pads Brake pad spring NOTE: To remove the inner brake pad "1", push down on the brake caliper bracket so that there is space to remove the brake pa ...

    Checking and charging the battery
    WARNINGBatteries generate explosive hydrogen gas and contain electrolyte which is made of poisonous and highly caustic sulfuric acid. Therefore, always follow these preventive measures: Wear protective eye gear when handling or working near batteries. Charge batt ...

    Troubleshooting
    The ignition system fails to operate (no spark or intermittent spark). NOTE: Before troubleshooting, remove the following part(s): 1. Seats 2. Fuel tank 3. Right side cover 4. Left side panel 5. Left upper side cowling ...

    2022 Copyright www.yam-r125.net |