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.