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Home >> Subaru >> 2020 >> Legacy Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Fuel Sub Level Sensor >> Installation
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Fuel Sub Level Sensor: Installation

  1. Install a new gasket to the fuel tank.
    G12391597Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel sub delivery tube to the fuel sub level sensor.
    G13198390Courtesy of SUBARU OF AMERICA, INC.
  3. Set the fuel sub level sensor to the position shown in the figure.
    CAUTION:
    • Be careful not to spill any fuel over the gasket. If any fuel is spilled onto the gasket, wipe it off completely. Otherwise the fuel sub level sensor may rotate together with the ring nut.
    • Set the fuel sub level sensor while paying attention to prevent its arm and float from contacting the fuel tank. If the arm of the fuel sub level sensor is bent, the fuel gauge may not read correctly.
    G13618591Courtesy of SUBARU OF AMERICA, INC.
  4. Set a new ring nut plate.
    G13618592Courtesy of SUBARU OF AMERICA, INC.
  5. Set a new ring nut, and align the fuel tank installation start position mark with the ring nut position mark.
    NOTE:
    • Make sure that the ring nut, ring nut plate and gasket are set as shown in the figure.
    • Set the ring nut by firmly pressing against the fuel tank.
    G13618593Courtesy of SUBARU OF AMERICA, INC.
  6. Using the ST, tighten the ring nut by one turn, and then tighten until the ring nut position mark is located within the installation end position range mark on the fuel tank.
    CAUTION:
    • Make sure that the ring nut position mark is located within the installation position end range mark on the fuel tank as shown in the figure.
    • Make sure that the position mark on the fuel sub level sensor is located within the installation position range mark on the fuel tank as shown in the figure.

    Preparation tool: 

    ST: ST FUEL PUMP (42099FL000)

    G13618594Courtesy of SUBARU OF AMERICA, INC.
  7. Using a caliper with depth gauge, measure the dimension (3 positions) of the ring nut and the top of fuel tank to check the tightening condition of the ring nut.
    CAUTION:
    • If the measured value exceeds the standard, retighten the ring nut to correct erroneous tightening of the ring nut.
    • If the ring nut and ring nut plate are deformed, cracked or damaged, replace them with new parts.

    Dimension of ring nut and top of fuel tank: 

    Standard 

    23.8±2.5 mm (0.937±0.098 in)

    G13618595Courtesy of SUBARU OF AMERICA, INC.
  8. Connect the quick connector to the fuel sub level sensor. Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Delivery and Evaporation Lines>INSTALLATION>QUICK CONNECTOR CONNECTION (TYPE F) .
    G13618586Courtesy of SUBARU OF AMERICA, INC.
  9. Connect the connector to the fuel sub level sensor.
    G13618539Courtesy of SUBARU OF AMERICA, INC.
  10. Install the service hole cover of fuel sub level sensor.
    G13618538Courtesy of SUBARU OF AMERICA, INC.
  11. Install the rear seat cushion. Refer to SEATS>Rear Seat>INSTALLATION .
  12. Connect the ground terminal to battery sensor. Refer to REPAIR CONTENTS>NOTE>BATTERY .
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