NECESSARY INFORMATION FOREWORD NECESSARY INFORMATION 1 When requesting service or ordering replacement parts, please inform your Komatsu distributor of the following items. PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE 1 This is at the front bottom right of the operator's seat. The design of the nameplate differs according to the territory. ENGINE SERIAL NO. PLATE 1 This is at the front top of the engine on the left side machine. 1-8