1999 Subaru Impreza Owner's Manual - Page 275

Maintenance and service 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 air cleaner element cases and remove the air cleaner element. 4. Clean the inside of the air cleaner element case 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. Spark plugs J Replacing the spark plugs D When disconnecting the spark plug cables, always grasp the spark plug cap, not the cables. D Make sure the cables are replaced in the correct order. CAUTION HBA004BA Replace the spark plugs according to the maintenance schedule in the warranty and maintenance booklet. - CONTINUED - 10-19