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

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Spark Plug: Testing and Inspection

SPARK PLUGS INSPECTION

1. Clean spark plugs.
Using a spark plug cleaner or wire brush, clean the spark plug.

2. Visually inspect spark plugs.
Check the spark plug for electrode wear, threads damage and insulator damage.
If abnormal, replace the plugs.

Recommended spark plugs:
ND: K16R-U
NGK: BKR5EYA

3. Adjust electrode gap.
Carefully bend the outer electrode to obtain the correct electrode gap.

Correct electrode gap: 0.8 mm (0.031 in.)