Title: Evaluate the spark plug.
Course: Small Engine Repair (20110-18) > Section: Servicing Spark Plugs

Evaluation should include removing the spark plug from the engine and visually inspecting the threads, insulator, and electrode for wear and/or damage.

Process/Skill Questions:

- What tool is used to remove a spark plug?
- What should one look for during a visual inspection of a spark plug?
- How can one determine whether a spark plug should be replaced?