Top > Technical Information > Trouble Shooting > Breakage of the Center Electrode Tip

Spark plugs with fine electrodes made of iridium or platinum have "Do not adjust the spark gap" written on their packing boxes.		Photo 1: Center electrode tip breakage
1)	This is to prevent the general user adjusting the spark gap and breaking or removing part of the fine center electrode tip as the spacing tool makes contact with it. See Photo 1.
2)	When the tip of the center electrode is broken, a nick is sometimes left on the ground electrode too.