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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Head Bolt

HEAD BOLT

Measuring point 73.0 mm (2.87 in.)
Standard outside diameter 10.85 to 11.0 mm (0.427 to 0.433 in.)
Minimum outside diameter 10.7 mm (0.421 in.)

- If any cylinder head bolt is broken or deformed, replace it.