The General Electric WH12X10527 Washing Machine Timer controls the wash cycle by regulating the duration of each phase. It operates by advancing through preset intervals, activating different functions such as filling, agitating, rinsing, and spinning. As the timer progresses, it signals the washer’s components to start or stop accordingly, ensuring an efficient cleaning process. This timer enhances washing performance by maintaining proper sequence and timing. It also extends appliance longevity by preventing overuse of specific cycles, contributing to overall efficiency.