Impreza WRX Wagon F4-2.0L DOHC Turbo (2002)
4. Tighten bolt (A) and install it to the cylinder head.
5. Tighten bolt (B) and insert the valve lifter.
6. Insert tweezers into the notch of the valve lifter, and take the shim out.
NOTE: By using a magnet (A), the shim (B) can be taken out without dropping it.
3. Measure the thickness of shim with a micrometer.
Selection formula