MPT Model

Remove the transmission assembly from the vehicle. < Ref. to , REMOVAL . >
Remove rear vehicle speed sensor, and separate the transmission case and extension case. < Ref. to , REMOVAL . >
Set the range select lever to "P".
Straighten the staked portion, and remove the lock nut.

Fig 1: Removing Lock Nut - MPT Model
Courtesy of SUBARU OF AMERICA, INC.
Using the ST1 and ST2, extract the reduction driven gear.
ST1 499737000 PULLER

ST2 899524100 PULLER SET

Fig 2: Extracting Reduction Driven Gear Using Puller ST1-499737000 And Puller Set ST2-899524100
Courtesy of SUBARU OF AMERICA, INC.