Intake And Exhaust Valve Oil Seal

If following conditions are found, use pliers to pinch oil seal and remove it from valve, and replace it new one.

• Lip is damaged
• Spring out of place
• Reconditioning of surfaces for valve and valve seat is necessary
• Replacement of valve guide is necessary

1. Place cylinder head on ST1.
2. Press-fit oil seal to the specified dimension indicated in Fig 1 using ST2.
   CAUTION:

   • Apply engine oil to oil seal before press-fitting. 
   • When press-fitting oil seal, do not use hammer or strike in. 
   • Differentiate between intake valve oil seal and exhaust valve oil seal by noting their difference in color. 

   ST1 498267800 CYLINDER HEAD TABLE

   ST2 498857100 VALVE OIL SEAL GUIDE

   1. Color of rubber part: 
      1. Intake [Black] 
      2. Exhaust [Brown] 
   2. Color of spring part: 
      1. Intake [Silver] 
      2. Exhaust [Silver] 
   Fig 1: Press-Fitting Oil Seal To Specified Dimension

   Courtesy of SUBARU OF AMERICA, INC.