Impreza WRX Wagon F4-2.0L DOHC Turbo (2002)
Stop light switch clearance: A 0.3 mm (0.012 inches)
3) If it is not in specified value, adjust it by adjusting the position of stop light switch.
CAUTION: Be careful not to rotate the stop light switch.
ADJUSTMENT
Loosen the lock nut, and adjust the stop light switch position until the clearance between threaded end of the stop light switch and the stopper becomes
0.3 mm (0.012 inches). Then, tighten the lock nut.