eMagTech Recoil Starter Kit Replace OEM 17722035430 17721535430 Compatible with Echo CS-3600 CS-3700 CS-3800 CS-3900 CS-4200 CS-440

["- Compatibility: Compatible with Echo CS-3600 CS-3700 CS-3800 CS-3900 CS-4200 CS-440 for smooth and reliable pull starting on mid size saws.","- Direct Replacement: Replace OEM 17722035430 and 17721535430 for a precise fit and function that matches factory mounting and cover profile.","- Maintenance Benefit: Restore performance by replacing a slipping rope or broken spring to keep yard work storm cleanup pruning and firewood tasks on schedule.","- Easy Installation: Remove the old cover align this unit and tighten screws using basic tools for quick turnaround at home or on job sites.","- Important Note: Please confirm the above compatible models match your needs before purchase."]