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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Procedures

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.
- In case of insufficient cleaning, it is permissible to take longer than 2 minutes for cleaning.

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.