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)

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Ignition Timing

Ignition Timing
Basic ignition timing is within the standard value.
Standard value 5 degrees BTDC ± 3 degrees
Actual ignition timing is at the standard value.
Standard value approximately 10 degrees BTDC

NOTE: Ignition timing fluctuates about ± 7 degrees, even under normal operating condition.

NOTE: It is automatically further advanced by about 5 degrees from 10 degrees Before Top Dead Center at higher altitudes.

NOTE: Wait till approximately 1 minute passes after the engine started, and check the ignition timing when the engine stabilized.