Brake Pedal: Inspection

Move the pad - brake pedal in a horizontal direction with a force of approx. 10 N (1 kgf, 2 lbf), and check that the pedal deflection is in the range of specifications.
CAUTION: If excessive deflection is noted, replace with a new bushing.

Deflection of brake pedal:

Wear limit: 5.0 mm (0.197 in) or less

Fig 1: Checking Pedal Deflection
Courtesy of SUBARU OF AMERICA, INC.
Check the position of the pedal pad.
Pedal height L:

140 - 150 mm (5.51 - 5.91 in)

Brake pedal free play A:

0.5 - 2.7 mm (0.020 - 0.11 in) [When pulling the brake pedal upward with a force of less than 10 N (1 kgf, 2 lbf).]

Fig 2: Checking Pedal Height
Courtesy of SUBARU OF AMERICA, INC.
If it is not within the specification, loosen the lock nuts of vacuum booster operating rod, and rotate the rod to adjust the pedal height L within the specification.
Tighten the lock nut.
Tightening torque:

Operating lock nut: 22 N.m (2.2 kgf-m, 16.2 ft-lb)

NOTE: Check the brake pedal height. When adjusting, also adjust the stop light switch.