Fuel Injector: Replacement

ST 18683AA000 INJECTOR SEAL INSTALLER 

Courtesy of SUBARU OF AMERICA, INC.

1. Using a pair of nippers, cut off the injector seal by pinching it.
   CAUTION: Be careful not to damage the fuel injector.

   Courtesy of SUBARU OF AMERICA, INC.

2. Remove the O-ring and backup ring from the fuel injector.

   Courtesy of SUBARU OF AMERICA, INC.

3. Attach the seal guide A to the fuel injector.
   NOTE: Two types of seal guides are provided. So, do not mix up the type to be used.

   Courtesy of SUBARU OF AMERICA, INC.

4. Set the injector seal to the injector seal installer.

   Courtesy of SUBARU OF AMERICA, INC.

5. Push in the injector seal installer slowly in the direction of the arrow, and attach the injector seal to the fuel injector.
   CAUTION:

   • Insert it so that the injector seal is installed straight.
   • Be careful that the injector seal does not go beyond the fuel injector groove.

   Courtesy of SUBARU OF AMERICA, INC.

6. While rotating the injector seal adjuster to left and right by 90 degrees for each side, slowly insert it all the way.
   NOTE:

   • Apply a thin coat of gasoline to the injector seal and injector seal adjuster.
   • With the injector seal adjuster fully inserted, rotate it to left and right approx. ten times by 90 degrees for each side to normalize the injector seal.

   Courtesy of SUBARU OF AMERICA, INC.

7. Attach the seal guide B to the fuel injector.
   NOTE: Two types of seal guides are provided. So, do not mix up the type to be used.

   Courtesy of SUBARU OF AMERICA, INC.

8. Set the injector seal to the injector seal installer.

   Courtesy of SUBARU OF AMERICA, INC.

9. Push in the injector seal installer slowly in the direction of the arrow, and attach the injector seal to the fuel injector.
   CAUTION:

   • Insert it so that the injector seal is installed straight.
   • Be careful that the injector seal does not go beyond the fuel injector groove.

   Courtesy of SUBARU OF AMERICA, INC.

10. While rotating the injector seal adjuster to left and right by 90 degrees for each side, slowly insert it all the way.
    NOTE:

    • Apply a thin coat of gasoline to the injector seal and injector seal adjuster.
    • With the injector seal adjuster fully inserted, rotate it to left and right approx. ten times by 90 degrees for each side to normalize the injector seal.

    Courtesy of SUBARU OF AMERICA, INC.

11. Attach two backup rings and O-ring to the fuel injector.
    NOTE: Use new backup rings and O-ring.

    Courtesy of SUBARU OF AMERICA, INC.