HiKOKI 6684681 Starter Pulley Ass'Y for a wide range of compatible HiKOKI and Hitachi petrol-powered garden and engine tools. This replacement pulley assembly forms part of the recoil starting mechanism and is suitable for replacing a worn, damaged or faulty original component. Manufactured to the correct specifications for precise fit and reliable engine starting. Part 6684681 replaces the previous part number 798-0651H-90.