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 base timing on engines equipped with electronic ignition is preset when the engine is manufactured, no adjustment is possible. Timing advance and retard are accomplished through the Powertrain Control Module (PCM) with the Ignition Control System and Knock Sensor System.