How to Use a Thread Chaser
The raised metal lines that run around the circumference of objects like screws or bolts are called "threads." The whole point of threads is to either guide a cap securely onto a bolt, guide a screw securely into an anchor or some other similar task. If the threads get dirty, that's where a thread chaser comes in. Thread chasers clean these threads, allowing you to use them as intended once again. Does this Spark an idea?
Instructions
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Pick a thread chaser that matches the size of the threads you're trying to clean. You can purchase individual thread chasers with certain thread sizes (for example, 14 millimeters or 18 millimeters), or you can purchase a kit with a wide variety of chasers. If the spark plug hole you're trying to clean has 14-millimeter threads, for example, you know you need a chaser that also has 14-millimeter threads.
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Screw your thread chaser into the object you're trying to clean. For example, if you're trying to clean the threads on the inside of a spark plug hole, screw the end of your thread chaser into the spark plug hole. With the chaser inserted into the spark plug hole, turn the chaser clockwise to insert it farther into the hole. As it is turning, the chaser cleans the threads.
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Remove your thread chaser from the object you're trying to clean by using your hand to turn it in a counterclockwise direction until the two objects separate from one another. The threads are now cleaned, and you can continue to use your tool (be it a spark plug hole or something else) again for its normal intended purpose.
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