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

Camshaft, Engine

Valve Timing Intake Open 9 Degrees Before Top Dead Center (deg BTDC)
Close 45 Degrees After Bottom Dead Center (deg ABDC)
Exhaust Open 49 Degrees Before Bottom Dead Center (deg BBDC)
Close 15 Degrees After Top Dead Center (deg ATDC)
Valve Clearance-Hot Engine Hydraulic Lash Adjuster