2004 Ford F350 Owner Guide 3rd Printing - Page 267

Maintenance and Specifications AIR FILTER MAINTENANCE Refer to the scheduled maintenance guide for the appropriate intervals for changing the air filter element. When changing the air filter element, use only the Motorcraft air filter element listed. Refer to Motorcraft part numbers in this chapter. Note: Do not start your engine with the air cleaner removed and do not remove it while the engine is running. Changing the air filter element 1. Loosen the clamp that secures the air filter element in place. 2. Carefully separate the two halves of the air filter housing. 3. Remove the air filter element from the open end of the air filter housing. 4. Install a new air filter element, ensuring the arrow on the top half of the air filter housing lines up with the notch on the bottom half of air filter housing. Be careful not to crimp the filter element edges between the air filter housing. This could cause filter damage and allow unmetered air to enter the engine if not properly seated. 5. Replace the two halves of the air filter housing and secure the clamp. 267 2004 F250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA English (fus)