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

INSPECT SPARK PLUG

a. Clean the spark plugs.
If the electrode has the traces of wet carbon, clean the electrode with a spark plug cleaner then dry it.

Air pressure: Below 588 kPa (6kg/sq.cm, 85 psi)
Duration: 20 seconds or less

Recommended Spark Plug:

b. Check the spark plug for any damage on its thread and insulator.
If there is damage, replace the spark plug.

c. Adjust the electrode gap.

Electrode gap: 0.7 to 0.8 mm (0.028 to 0.031 in.)