Subaru IMPREZA 2002 Owner's Manual page 373

Maintenance and service
1) Metal support
3. Grasp the locked end of the blade rubber as-
sembly and pull it firmly until the stoppers on the
rubber are free of the metal support.
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HS0191
1) Metal spines
4. 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 rub-
ber.
HS0192