The sexist definition in the dictionary describes a sexist as a person who shares sexist beliefs and participates in sexist behaviors. Sexist beliefs are beliefs that revolve around sexism. The word sexist can describe the nature of a comment or gesture, as well.
So how long do they typically last? Well, standard copper plugs are said to last anywhere from 10,000 to 20,000 miles (16,093 to 32,187 kilometers), while more expensive iridium or platinum spark plugs can last 60,000 miles (96,561 kilometers) or more [source: Spark plugs UK].
A lawn mower spark plug is used to ignite the air and fuel mixture in the same manner as the spark plugs in an automobile. Made of ceramic surrounding an iron core, a lawn mower spark plug is situated in a steel base. The spark gap in a lawn mower spark plug is set in the same manner as an automobile spark plug. After checking with the lawn mower's service manual, the spark gap can be set by grasping the electrode's tang with a set of pliers and pulling it open or pushing it closed until it meets the specified gap when a feeler gauge is inserted into the opening.