Subaru Legacy Manuals 2019 Legacy Owner's Manual | Page 444

11-36 Maintenance and service/Replacement of wiper blades 2. Pull the blade rubber assembly out of the plastic support. 1) Metal spines 3. If the new blade rubber is not provided with two metal spines, remove the metal spines from the old blade rubber and install them in the new blade rubber. 4. Align the claws of the plastic support with the grooves in the blade rubber assembly, then slide the blade rubber assembly into place.