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, Intake/Exhaust





Use an internal micrometer to measure the diameter of the valve guide.

Valve stem play
Intake 0.03 to 0.057 mm (0.0012 to 0.0022 inch)
Exhaust 0.04 to 0.067 mm (0.0016 to 0.0026 inch)