Impreza WRX STI F4-2.5L Turbo (2008)
4) Tighten the adjusting screw until it can no longer be tightened.
5) Loosen the adjusting screw, and remove the spring and sleeve.
6) Remove the two bolts securing valve assembly.
7) Carefully draw out the input shaft and remove the valve assembly.
8) Put a vinyl tape around the spline portion, and slide the dust cover to remove.
