2009 Nissan Xterra Owner's Manual - Page 268

DRIVE BELT SPARK PLUGS WARNING Be sure the ignition key is in the OFF or LOCK position before servicing drive belt. The engine could rotate unexpectedly. 1. Visually inspect the belt for signs of unusual wear, cuts, fraying or looseness. If the belt is in poor condition or is loose, have it replaced or adjusted by a NISSAN dealer. 2. Have the belt checked regularly for condition and tension in accordance with the maintenance schedule found in the "NISSAN Service and Maintenance Guide". WDI0639 SDI1895 1. 2. 3. 4. 5. 6. Power steering fluid pump Automatic belt tensioner Cooling fan Air conditioner compressor Crankshaft pulley Generator REPLACING SPARK PLUGS Iridium-tipped spark plugs It is not necessary to replace iridium-tipped A spark plugs as frequently as conventional type spark plugs because they last much longer. Follow the maintenance log shown in the "NISSAN Service and Maintenance Guide". Do not service iridium-tipped spark plugs by cleaning or regapping. ● Always replace spark plugs with recommended or equivalent ones. 8-16 Maintenance and do-it-yourself