Spark Plug: Description and Operation

Spark Plug View:

PURPOSE
The spark plug provides a path for the high voltage of the secondary circuit to flow to ground.

CONSTRUCTION
The spark plugs consist of an insulated center electrode and triangular ground electrode. The ground electrode consists of three strips that meet above the center electrode in the shape of an inverted tripod. The tripod type electrode provides a large conductive area which maintains a constant air gap and a uniform flame front during the spark plug's service life.

NOTE: This type of spark plug requires no adjustment.