RH Side

Disconnect the ground cable from battery.

Fig 1: Disconnecting Ground Cable From Battery
Courtesy of SUBARU OF AMERICA, INC.
Remove the air cleaner case. < Ref. to REMOVAL , Air Cleaner Case >
Disconnect the connector from ignition coil.
Remove the ignition coil.

Fig 2: Locating Ignition Coil Bolts (RH Side)
Courtesy of SUBARU OF AMERICA, INC.
Remove the spark plug with a spark plug socket.