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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Ignition Timing: Testing and Inspection

Checking Ignition Timing Control

Requirements:
Ignition timing adjusted to specifications.

1. Centrifugal control (vacuum hose detached).

Ignition timing should be 3 to 5° before TDC at idle speed (900 ± 50 rpm).

At 6000 rpm ignition timing must not exceed 25° before TDC.

2. Vacuum control (vacuum hose connected).

At an engine speed of 4000 rpm ignition timing should be between 28 and 32° before TDC.