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

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Spark Plug Cleaning

SPARK PLUG CLEANING

NOTE: Using a sand blast type plug cleaner, is recommended for the spark plug cleaning.

[When a sand blast type plug cleaner is used]
Cleaning must be carried out within 20 seconds to protect the electrode.

[When special tool MB992273 is used]

1. Sufficiently apply the brake cleaner to the plug end.

NOTE: Repeatedly applying the brake cleaner is acceptable during the cleaning.







2. Using special tool MB992273, intensively clean the electrode for 1 to 2 minutes.

NOTE: Even if using strong force, the electrode is not damaged.

3. After the cleaning, sufficiently remove and then dry both of the carbon and the brake cleaner on the plug, using a waste cloth or air blowing.