Pedal Free Play
Depress pedal a few times to eliminate vacuum. On 626 models, pedal free play should be .28-.35" (7-9 mm). On all other models, pedal free play should be .16-.28" (4-7 mm). Adjust play by loosening push-rod lock nut and turning push-rod until correct free play is obtained. Tighten push-rod lock nut.