2002 Nissan Maxima Owner's Manual - Page 193

AIR CLEANER not only cleans the air, it stops flame if the engine backfires. If it is not there, and the engine backfires, you could be burned. Do not drive with the air cleaner removed and be careful when working on the engine with the air cleaner removed. ¼ Never pour fuel into the throttle body or attempt to start the engine with the air cleaner removed. Doing so could result in serious injury. SDI0145 SDI0963 REPLACING SPARK PLUGS Platinum-tipped spark plugs It is not necessary to replace the platinumtipped spark plugs as frequently as the conventional type spark plugs since they will last much longer. Follow the maintenance schedule but, do not reuse them by cleaning or regapping. If replacement is required, see your NISSAN dealer for servicing. Always replace with recommended platinum-tipped spark plugs. The filter element should not be cleaned and reused. Replace it according to the maintenance intervals. See the separate Service and Maintenance Guide. When replacing the filter, wipe the inside of the air cleaner housing and the cover with a damp cloth. WARNING ¼ Operating the engine with the air cleaner removed can cause you or others to be burned. The air cleaner 8-18 Maintenance and do-it-yourself