What Is a Lawn Mower Spark Plug?
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. As the lawn mower engine is turned over, the ignition points send a charge to the lawn mower spark plug. The steel fixture of the spark plug forms the ground as it is threaded into the engine. With the lawn mower spark plug grounded, the points can send the electrical charge through the spark plug’s metal core and to the electrode situated at the end of the spark plug. As the spark jumps from the electrode to the electrode tan
