Valve Clearance

Engine temperature must be less than 100°F (38°C). Remove cylinder head cover. Align No. 1 mark on camshaft sprocket with mark on cam holder. See Fig 1.
Loosen adjustment screw lock nut. Adjust valves on cylinder No. 1. Tighten lock nut. Recheck clearance. Repeat procedure if clearance changes.

Rotate crankshaft 144 degrees. Align No. 2 mark on camshaft sprocket with mark on cam holder. Repeat adjustment procedure on cylinder No. 2. Tighten lock nut. Recheck clearance. Repeat procedure on cylinders No. 4, 5 and 3 in this order.

VALVE CLEARANCE ADJUSTMENT

Application ⁽¹⁾

In. (mm)

Intake

.009-.011 (.24-.28)

Exhaust

.011-.013 (.28-.32)

⁽¹⁾	Adjust valves when engine is cold.

Fig 1: No. "1" Mark On Camshaft Sprocket ID (No. "2" Through "5" Marks Are Similar)

Courtesy of AMERICAN HONDA MOTOR CO., INC.