Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Valve, Intake/Exhaust

Valve System
Face Angle 45±
Seat Angle 45±
Minimum Margin 0.635 mm (0.025 inch)
Seat Runout Maximum 0.050 mm (0.002 inch)
Seat Width-Intake 1.53 - 2.03 mm (0.060 - 0.080 inch)
Seat Width-Exhaust 2.29 - 2.79 mm (0.090 - 0.110 inch)
Stem Height-All 49.15 - 50.17 mm (1.935 - 1.975 inch)
Stem Clearance-All 0.038 - 0.089 mm (0.0015 - 0.0032 inch)