2002 Oldsmobile Alero Owner's Manual - Page 258

To check or replace the engine air cleaner/filter, do the following: 1. Remove the screws that hold the cover on. 2. Lift off the cover. 3. Check or replace the engine air cleaner/filter. 4. Put the cover back on tightly. Refer to the Maintenance Schedule to determine when to replace the air filter. See "Scheduled Maintenance Services" in the Index. CAUTION: Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air, it stops flame if the engine backfires. If it isn't there, and the engine backfires, you could be burned. Don't drive with it off, and be careful working on the engine with the air cleaner/filter off. NOTICE: If the air cleaner/filter is off, a backfire can cause a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner/filter in place when you're driving. 6-21