Impreza WRX STI F4-2.5L DOHC Turbo (2007)
2) Fully depress the clutch pedal.
3) Adjust the clutch pedal plate and clutch switch so that the gap between them is 3 - 3.5 mm (0. 12 - 0.14 inch).
4) Tighten the lock nut.
Tightening torque: 8 Nm (0.8 kgf-m, 5.9 ft. lbs.)