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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Block Distortion








1. Use the Straight Edge and the Feeler Gauge to inspect the head gasket surface for flatness. If the cylinder block is distorted, resurface the cylinder block within specification.
- The head gasket surface is measured in six straight line directions for flatness.