Subaru LEGACY 2004 Service Manual page 629

Front Door
EXTERIOR BODY PANELS
2) Loosen the screws (A), and tap the striker (B)
using plastic hammer to adjust the gap between
rear end surface of front door panel and front end
surface of rear door.
CAUTION:
Do not use an impact wrench. Welding area on
the striker nut plate is easily broken.
(A)
(B)
EB-00017
EB-19