Honda Workshop Service and Repair Manuals

Valve Clearance: Specifications

Valve Clearance

NOTE: Valves should be adjusted only when the cylinder head temperature is less than 100° F (38° C).

Valve

Clearance (cold)

Intake

Standard or new ...........................................................................................................................................  0.15-0.19 mm (0.006-0.0007 in.)

Exhaust

Standard or new .............................................................................................................................................  0.26-0.30 mm (0.010-0.012 in.)

Stem O.D.

Intake

Standard or new .........................................................................................................................................  5.48-5.49 mm (0.2157-0.2161 in.)
Service limit .....................................................................................................................................................................  5.45 mm (0.215 in.)

Exhaust

Standard or new .........................................................................................................................................  5.45-5.46 mm (0.2146-0.2150 in.)
Service limit .....................................................................................................................................................................  5.42 mm (0.213 in.)

Stem-to-guide clearance

Intake

Standard or new .....................................................................................................................................  0.020-0.050 mm (0.0008-0.0020 in.)
Service limit .....................................................................................................................................................................  0.08 mm (0.003 in.)

Exhaust

Standard or new .....................................................................................................................................  0.050-0.080 mm (0.0020-0.0031 in.)
Service limit .....................................................................................................................................................................  0.11 mm (0.004 in.)