LH Side

Remove the collector cover.
1. Carefully pull up the rear of collector cover at two positions (A).
2. Carefully pull up the front of collector cover at two positions (B) while moving it forward.
  
  Fig 1: Removing Collector Cover
  Courtesy of SUBARU OF AMERICA, INC.
Remove the battery. <Ref. to REMOVAL , Battery.>
Remove the engine harness stay (A).
Disconnect the connector (B) from ignition coil.
Remove the ignition coil.
NOTE: Turn the #6 ignition coil to remove it.

Fig 2: Identifying Engine Harness Stay
Courtesy of SUBARU OF AMERICA, INC.
Remove the spark plug with a spark plug socket.

Fig 3: Removing Spark Plug With Spark Plug Socket
Courtesy of SUBARU OF AMERICA, INC.

Fig 4: Identifying Ratchet Handle, Extension Bar, Universal Joint, Spark Plug Socket
Courtesy of SUBARU OF AMERICA, INC.