Subaru 2004 Forester Owner's Manual page 395

Maintenance and service
5. Align the claws of the metal support with the
grooves in the rubber and slide the blade rubber as-
sembly into the metal support until it locks.
11-52
HSB061BA
1) Stopper
Be sure to position the claws at the end of the metal
support between the stoppers on the rubber as shown.
If the rubber is not retained properly, the wiper blade
may scratch the windshield.
6. Install the wiper blade assembly to the wiper arm.
Make sure that it locks in place.
7. Lower the wiper arm.
1
HSB062BB