Operation CHARM: Car repair manuals for everyone.
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 Seat

VALVE SEAT
Angle 45 - 45 1/2°
Runout (Max) 0.051 mm (0.002 inch)

VALVE SEAT WIDTH
Intake 0.75 - 1.25 mm (0.0295 - 0.0492 inch)
Exhaust 1.25- 1.75.mm (0.0492 - 0.0689 inch)