If your mowing blade has struck an object and damaged the blade adapter, it's time for a replacement. MTD Parts has blade adapters for all its Walk Behind Lawn Mowers and Riding Lawn Mowers. Use our Part Finder to locate the proper blade adapter.
![Blade Adapter w/ Pulley - 3.8" x 25 mm Inside Dia.](https://www.mtdparts.com/dw/image/v2/BCSH_PRD/on/demandware.static/-/Sites-mtd-master-catalog/default/dw18f424cd/products/987-02221.jpg?sw=258&sh=258&sm=fit "Blade Adapter w/ Pulley - 3.8" x 25 mm Inside Dia.")