Oil Charge Pipe: Removal

Disconnect the ground cable from battery.
Lift up the vehicle.
Remove the under cover. Refer to REMOVAL .
Remove the front exhaust pipe. Refer to REMOVAL .
Disconnect the connector from turbine speed sensor 1.
Remove the oil charge pipe, and then remove the O-ring from flange side.

Fig 1: Identifying ATF Level Gauge And Oil Charge Pipe
Courtesy of SUBARU OF AMERICA, INC.