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

Component Tests and General Diagnostics

1. Ensure no continuity between vacuum switch terminal 1 and 2 with vacuum of 6.30 to 7.08 inches Hg applied.
2. Ensure continuity between terminals with no vacuum applied.
3. If results are not as indicated, replace switch.