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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Full Throttle Enrichment Switch, Checking



Checking Full Throttle Switch

Work sequence






- "Zero" ohmmeter and connect to contacts on switch
with throttle valve closed, ohmmeter must read infinite ohms

- Open throttle valve slowly
just before reaching stop, ohmmeter must read 0 ohms

If NO, switch must be adjusted or replaced