How do you change air cleaner filter on craftsman lawn mower Tecumseh engine model 143016702?

To change the air cleaner filter on a Craftsman lawn mower with a Tecumseh engine model 143016702, first turn off the engine and disconnect the spark plug for safety. Remove the air cleaner cover by unscrewing the screws or clips, then take out the old filter. Replace it with a new filter, ensuring it fits snugly, and reattach the air cleaner cover securely. Finally, reconnect the spark plug before starting the mower.