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)

Or, hide this message: temporarily or permanently

Ignition Timing






The IGNITION TIMING can be varied from 10 degrees (10 degrees BTDC) to O degrees by pressing any of the number keys, 4 through 7. Engine rpm, SPOUT degree, IAC valve opening, and IDLE SW are displayed. When this test is completed, press CANCEL to return to the ACTIVE COMMAND MODES menu (Screen Display J).