How do I use the Self-Clean cycle on the Kenmore 790 oven?

Use a 2-hour Self-Clean cycle for light soils, 3 hours for average soils, or 4 hours for heavy soils. To set it, ensure the clock shows the correct time, press the appropriate pad to flash the display, then hold and press the pad to scroll through start times, and press to initiate the cycle. Allow the oven to cool before cleaning and wear rubber gloves when manually cleaning exterior parts. (Page 2)