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

Free Length (Intake and Exhaust 41.8 mm (1.65 in.)
Squareness
Standard 2.0 mm (0.080 in. max.)
Service Limit 2.5 mm (0.100 in. max.)
Force/Tension at 26.25 mm (0.984)
Standard 724-788 N (163-177 lbs.)
Service Limit 688 N (155 lbs. min.)
Force/Tension at 35.25 mm (1.388)
Standard 293-329 N (66-74 lbs.)
Service Limit 278 N (63 lbs. min.)