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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Valve Spring

Valve springs

External diameter: 0.15 mm
Internal diameter: 26.20 mm

Length (mm) at Load (N)
L: 42.00 mm - No Load
L1: 34.00 mm - 270 ± 20 N
L2: 24.50 mm - 640 ± 40 N

Measure spring load using tester tool No. 999 9802, or equivalent