Fitment: For 450E, 500E, 550E, 575E engines; compatible with 08P502, 093J02, 09P602 and 09P702 engine models. OE replacement for 591139, 590588, 593961. Smooth Manual Ignition: This recoil pull starter delivers consistent tension and rapid retraction for easy engine starts. It provides reliable ignition with fewer pulls, making it suitable for outdoor power equipment that requires quick readiness. Reinforced Internal Spring: Built with a torque recoil spring and an impactresistant casing. This manual engine start assembly withstands repeated use and harsh working environments, maintaining tension without slack or failure over time. Ergonomic Grip Handle: Contoured pull handle for comfortable hand control. Antislip design offers a solid grip—even with gloves—reducing fatigue during frequent starts. Use scenarios: worn or failing pull starters on outdoor equipment that use 450E575E engines, such as lawn mowers, tillers, and leaf blowers, to restore fast, reliable starts. Maintain fleet readiness at job sites or rental yards by serving as a dependable spare for equipment that requires quick starts, minimizing downtime on tools like small generators and other compatible units. Use in harsh environments or cold conditions where consistent tension and reliable ignition are critical, ensuring dependable performance for frequent start cycles.