This tension spring, also known as a coil spring or extension spring, is an authentic manufacturer replacement part used in a variety of outdoor power equipment. It is a cylindrical, steel spring with one hook/ring on each end, which is used to hook on to the equipment parts. The spring is responsible for providing tension or resistance to various parts for controlled movement and added stability. It is typically located in areas such as throttle controls, idler pulleys, and belts. The tension spring can rust or break over time, leading to loose components, equipment instability, and potentially causing damage. To remove and replace the tension spring, use needle nose pliers or a spring hook tool to grab the hooks and gently pry them off. Hook the new spring on the attachment points and ensure that it can maintain the required tension.