How do you replace the belt to a Bolens Walk behind edger Model 25B-521765?

To replace the belt on a Bolens Walk Behind Edger Model 25B-521765, first, ensure the engine is off and disconnect the spark plug for safety. Remove the side cover to access the belt, then detach the old belt from the pulleys by loosening any tensioners or fasteners. Install the new belt by looping it around the pulleys, ensuring it is properly aligned, and reassemble the side cover before reconnecting the spark plug. Finally, test the edger to ensure the new belt is functioning correctly.