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

SPRING TENSION
Valve Closed 271-307 N @ 41.656 mm (61-69 lbs. @ 1.64 inch)
Valve Open 818.5-871.9 N @ 30.89 mm (184-196 lbs. @ 1.216 inch)

Free Length (Approximately) 47.65 mm (1.876 inch)

Inside Diameter 21.0-21.51 mm (0.827-0.847 inch)