2011 Subaru Tribeca Owner's Manual - Page 346

Maintenance and service 11-15 6. To install the air cleaner case cover, insert the three projections on the air cleaner case cover into the slits on the air cleaner case. 7. Install in the reverse order of removal. Spark plugs It may be difficult to replace the spark plugs. It is recommended that you have the spark plugs replaced by your SUBARU dealer. The spark plugs should be replaced according to the maintenance schedule in the "Warranty and Maintenance Booklet". Drive belts The alternator, power steering pump, and air conditioner compressor depend on drive belts. Satisfactory performance requires that belt tension be correct. It is unnecessary to check belt tension 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 a belt is loose, cracked, or worn, contact your SUBARU dealer. & Recommended spark plugs SILFR6C11 (NGK)