July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

LH Side

Remove the battery.
Remove the spark plug cords by pulling the boot. (Do not pull the cord itself.)

Fig 1: Removing Spark Plug Cords By Pulling Boot
Courtesy of SUBARU OF AMERICA, INC.
Remove the spark plug with a spark plug socket.

Fig 2: Removing Spark Plug With Spark Plug Socket
Courtesy of SUBARU OF AMERICA, INC.