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Spark Plug Components
- Electrode :
The tip that comes right off the base.
- Ground Strap :
The black curved tip of the plug. You need to make sure that the distance between the ground strap and the electrode is what the manufacturer is recommending. For this particular model, the gap needs to be 1/35,000th, and this can be checked by using a feeler gauge or gapper. Simply slide the ground strap along the gauge or gapper until you come to the proper setting. The feeler gauge or gapper actually opens the ground strap up as it slides along.
Note :
If the ground strap opening is either too large or too small, it can result in a problem called "pre-ignition" where the spark plug will wear out too quickly.
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