. FOREWORD NECESSARY INFORMATION NECESSARY INFORMATION When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following items. PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE On the center right of the front frame. The design of the nameplate differs according to the territory. 1 - 6 ENGINE SERIAL NO. PLAT This name plate is affixed on the oil cooler at the side of engine c ylinder bloc k on the left side EPA: Environmental Protection A gency, U.S.A.