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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Valve Spring

Compression Pressure (N [lbs..] @ Spec. Length) 800.6 N (180 Lbs.)
Valve open to maximum lift 29.5 mm (1.16 In.) 288.1 N (65 Lbs.)
Valve closed 40.1 mm (1.58 In.)
Free Length (Approximate) 46.7 mm (1.84 In.)
Installed Spring Height 44.17-41.98 mm (1.736-1.650 In.)
Service Limit 10% Force Loss @ Specified Height