2015 Nissan Versa Owner's Manual - Page 321

SPARK PLUGS 1. Visually inspect the belt for signs of unusual wear, cuts, or fraying. If the belt is in poor condition, have it replaced or adjusted by a NISSAN dealer. 2. Have the belt checked regularly for condition. WARNING Be sure the engine and ignition switch are off and that the parking brake is engaged securely. CAUTION Be sure to use the correct socket to remove the spark plugs. An incorrect socket can damage the spark plugs. SDI1895 REPLACING SPARK PLUGS Platinum-tipped spark plugs A It is not necessary to replace platinum-tipped ᭺ 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 platinum-tipped spark plugs by cleaning or regapping. ● Always replace spark plugs with recommended or equivalent ones. 8-16 Maintenance and do-it-yourself