2008 Nissan 350Z Owner's Manual - Page 253

AIR CLEANERS 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 not only cleans the air, it stops the 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. SDI2054 SDI2020 Iridium-tipped spark plugs It is not necessary to replace the iridium-tipped spark plugs as frequently as the conventional type spark plugs since they will last much longer. Follow the maintenance log shown in the "NISSAN Service and Maintenance Guide", but do not service iridium-tipped spark plugs by cleaning or regapping. Always replace spark plugs with recommended or equivalent ones. To remove the filter from the air cleaner, pull off 1 2 the retainers k and pull the unit upward k . The filter element should not be cleaned and reused. Replace it according to the maintenance log shown in the "NISSAN Service and Maintenance Guide". When replacing the filter, wipe 8-18 Maintenance and do-it-yourself