. FOREWORD NECESSARY INFORMATION NECESSARY INFORMATION When requesting service or ordering replacement parts, please inform your Komatsu distributor following items. ENGINE SERIAL NO. PLATE This is at the top at the rear of the engine on the right side of the machine. 1 - 8 of the PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLA On the center right of the front frame. rding to the territory. The design of the nameplate differs acco EPA: Environmental Protection Agency, U.S.A.