Cylinder Head: Disassembly

Remove the chain cover securing bolt from the cylinder head LH.

Fig 1: Locating Chain Cover Securing Bolt From Cylinder Head LH
Courtesy of SUBARU OF AMERICA, INC.
Remove the stud bolts from the cylinder head.

Fig 2: Locating Stud Bolts From Cylinder Head
Courtesy of SUBARU OF AMERICA, INC.
Remove the valve collet, valve, valve spring retainer, valve spring and valve spring seat from the cylinder head RH.
WARNING: Metallic sodium is encapsulated in the exhaust valve. Metallic sodium is a strong alkaline material and thus prone to serious chemical reaction. When handling or disposing of the valve, be sure to confirm "DISPOSAL". Ref. to MECHANICAL (H4DOTC)>Cylinder Head>DISPOSAL .

CAUTION: During work, place a waste cloth, etc. to avoid scratching the mating surface of the cylinder head RH.
NOTE:
- Mark each part to prevent confusion.
- Keep all the removed parts in order for reinstalling in their original positions.
1. Compress the valve spring and remove the valve collet using ST.
  ST 0920287002000 REMOVER AND REPLACER
  
  Fig 3: Compressing Valve Spring
  Courtesy of SUBARU OF AMERICA, INC.
2. Remove valve, valve spring retainer, valve spring and valve spring seat.
Remove the valve collet, valve, valve spring retainer, valve spring and valve spring seat from the cylinder head LH.
Remove the valve oil seals from valve guides of cylinder head RH.
CAUTION:
- During work, place a waste cloth, etc. to avoid scratching the mating surface of the cylinder head RH.
- Use special care not to damage the cylinder head RH and guide during work.
NOTE: For removal of valve guide, refer to INSPECTION. Ref. to MECHANICAL (H4DOTC)>Cylinder Head>INSPECTION>VALVE & VALVE GUIDE .

Fig 4: Locating Valve Oil Seals From Valve Guides Of Cylinder Head RH
Courtesy of SUBARU OF AMERICA, INC.
For cylinder head LH, remove the valve oil seal in the same manner.