This Serviceman Handbook provides comprehensive information for the Kobelco SK450-VI, SK450Lc-VI, SK480-VI, and SK480Lc-VI Dynamic Acera series. These machines are engineered for robust performance and reliability in demanding operational environments. The series represents a commitment to advanced engineering, offering unique features designed to optimize productivity and efficiency across a wide range of applications. This manual serves as an essential resource for maintaining and repairing these Kobelco models. It covers critical areas including detailed maintenance procedures, lubrication specifications, filter element lists, and assembly guidelines with tightening torques. Furthermore, it provides information on special tools and equipment, diagnostic testing for engine, hydraulic, and travel performance, as well as electrical and hydraulic circuit diagrams. Technical specifications, dimensions, and noise level data are also included to ensure proper understanding and operation.