DOP42-008MTD MTD Ignition Key No. 725-0201. This "Indak" igniton key fits over 90% of the ignition switches used on Outdoor Power Equipment. Replaces John Deere part # M40718, MTD part # 725-0201, Murray part # 20729, Scag part # 4817-02 and Sears part # 365410.