Cylinder Head: Disassembly

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Remove the valve lifter.
Compress the valve spring and remove the valve spring retainer key. Remove each valve and valve spring.

ST1 498267600 CYLINDER HEAD TABLE

ST2 499718000 VALVE SPRING REMOVER

NOTE: Keep all the removed parts in order for re-installing in their original positions.

CAUTION:

Mark each valve to prevent confusion.
Use extreme care not to damage the lips of the intake valve oil seals and exhaust valve oil seals.

Fig 1: Removing Each Valve And Valve Spring Using Special Tools

Courtesy of SUBARU OF AMERICA, INC.