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)

Or, hide this message: temporarily or permanently

Vacuum Switch

1. Disconnect vacuum control switch electrical connector.
2. Using ohmmeter, ensure there is no continuity between connector terminals at idle.
3. Disconnect and reconnect vacuum hose at vacuum control switch while ensuring momentary continuity between connector terminals.
4. Connect electrical connector.
5. If test results are unsatisfactory, replace vacuum control switch.