Oil Charge Pipe: Removal

Remove the air intake boot assembly. (non-turbo model) < Refer to REMOVAL , Air Intake Boot. >
Remove the intercooler. (turbo model) < Refer to REMOVAL , Intercooler. >
Remove the starter.
Remove the oil charge pipe, and then remove the O-ring from the flange side.

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