Subaru Impreza Manuals 2014 Impreza Owner's Manual | Page 403

11-14 Maintenance and service/Spark plugs Spark plugs Drive belts It may be difficult to replace the spark plugs. It is recommended that you have the spark plugs replaced by your SUBARU dealer. It is unnecessary to check the deflection of the drive belt periodically because your engine is equipped with an automatic belt tension adjuster. However, replacement of the belt should be done according to the maintenance schedule in the “Warranty and Maintenance Booklet”. Consult your SUBARU dealer for replacement. If the drive belt is loose, cracked or worn, contact your SUBARU dealer. The spark plugs should be replaced according to the maintenance schedule in the “Warranty and Maintenance Booklet”. CAUTION 7. To install the air cleaner case (rear), insert the three projections on the air cleaner case (rear) into the slits on the air cleaner case (front). 8. Install in the reverse order of removal. Make sure the cables are replaced in the correct order. & Recommended spark plugs For the recommended spark plugs, refer to “Electrical system” F12-7.