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
- visually inspecting the threads, insulator, and electrode for wear and/or damage
- testing the spark plug for operation.

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?

Teacher Resources:

- What is the difference between a resistor and non-resistor spark plugs [sic]?, Sparesbox