WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Using the ST A and ST B, press-fit the bushing.
STA 20099AE010 INSTALLER & REMOVER
STB 20099AE010 INSTALLER & REMOVER
Fig 1: Installing Bushing Using Installer & Remover