NECESSARY INFORMATION FOREWORD NECESSARY INFORMATION 0. When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following items. MACHINE SERIAL NO. PLATE AND POSITION 0. On the center right of the front frame. ENGINE SERIAL NO. PLATE AND POSITION 0. This name plate is affixed on the oil cooler at the side of engine cylinder block on the left side of machine. EPA: Environmental Protection Agency, U.S.A. 1-6