2003 Subaru Legacy Owner's Manual - Page 391

Maintenance and service B Replacing the air cleaner element Replace the air cleaner element according to the maintenance schedule in the "Warranty and Maintenance Booklet". Under extremely dusty conditions, replace it more frequently. It is recommended that you always use genuine SUBARU parts. n 2.5 liter models HBB063BB HBB064BB 1. Remove the bolt securing the rear air cleaner element case. 2. Unsnap the three clamps holding the rear air cleaner element case. 3. Separate the rear air cleaner element case from the front air cleaner element case and remove the air cleaner element. 4. Clean the inside of the front and rear air cleaner element cases with a damp cloth and install a new air cleaner element. 5. Insert the four projections on the rear air cleaner element case into the slits on the front air cleaner element case and snap the three clamps on the rear air cleaner element case and then tighten the bolt. 11 - CONTINUED - 11-19