How do I set the timer? Use the “+” button to increase time displayed. Use the “-” button to decrease time displayed. Make sure that correct AM/PM is displayed. TIP: Holding “+” or “-” button down allows you to scroll or more quickly through your time selection. Related articles How do I program the timer to water automatically? How does the 180 degree pivoting hose connector work? Can I operate the timer manually? How much hose can SJ-SHSBB hold? Why should I use a Roof Rake?