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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Spark Plug: Testing and Inspection

Check the plug gap and replace if the limit is exceeded.

Standard Value: 1.0 - 1.1 mm (0.39 - 0.43 in.)

Limit : 1.3 mm (0.051 in.)

CAUTION:
1. Do not attempt to adjust the gap of the platinum plug.
2. Cleaning of the platinum plug may result in damage to the platinum tips. Therefore, if carbon deposits must be removed, use a plug cleaner and complete cleaning within 20 seconds to protect the electrode. Do not use a wire brush.