(4) Install valve bridges (1 and 4) on bridge guides (5), making sure grooves in bridges fit over top of

(5) Push down on top of valve bridge (1 or 4) and turn adjusting screw (2) until it just touches valve

(6) Turn screw (2) an additional 1/4-turn and tighten nut (3) finger tight

(7) Remove valve bridge (1 or 4) and mount in vise with soft jaws.

(8) Hold screw (2) and tighten nut (3) to 20 to 25 lb-ft (27 to 34 Nm).