Using Windshield Glass Knife

Disconnect the ground cable from the battery.
Remove the passenger side front pillar trim, and disconnect the wiper deicer connector. (Model with wiper deicer)
Remove the cowl panel.
Ref. to REMOVAL , Cowl Panel.
Remove the molding.
Tape the body side of the circumference of windshield glass for protection.
Apply sufficient amount of soapy water to the adhesive part.
Insert the windshield glass knife into the adhesive.
While holding the knife edge and windshield glass edge at a right angle, move the windshield glass knife in parallel to the windshield glass edge along the surface and edge of windshield glass to cut the adhesive part.
NOTE:
- Do not twist the windshield glass knife.
- Cutting of adhesive part shall be started with wider gap between windshield glass and body.
  
  Fig 1: Cutting Adhesive From Windshield Glass And Body
  Courtesy of SUBARU OF AMERICA, INC.
- The locating pins are bonded to the corners of glass. Use piano wire to disconnect the pins.
  
  Fig 2: Identifying Body Panel And Windshield Glass
  Courtesy of SUBARU OF AMERICA, INC.