RH 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.
Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Repair Contents. >
Remove the air cleaner case. < Ref. to REMOVAL , Air Cleaner Case. >
Remove the engine harness stay (A).
Disconnect the connector (B) from ignition coil.
Remove the ignition coil.
NOTE: Turn the #5 ignition coil to remove it.

Fig 2: Identifying Engine Harness Stay And Ignition Coil Connector With Bolts
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 And Spark Plug Socket
Courtesy of SUBARU OF AMERICA, INC.