기능

• Usage: (1) Rotate the adjustment screws to adjust the appropriate gap size.　② Insert the spark plug wire into the rear of the body.　③ Place the clamp somewhere on the engine as shown in the figure to get the ground.　④ Start the engine and check the spark.
• The spark test can be performed at the end of the plug line.
• Check the ignition spark without unplugging the spark plug.