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)

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Timing Components: Service Precautions

VALVE PISTON CONTACT
- Use care when turning crankshaft or camshaft while toothed timing belt is loose or disconnected.
- Piston valve contact is possible and may cause internal engine damage.
- After installing new lifter(s) or cylinder head the engine MUST NOT be started for approx. 30 minutes.
- Hydraulic build up in the lifters MUST subside, otherwise the valves will strike the pistons.