This Service Repair Manual provides comprehensive information for the Komatsu WA450-6 and WA480-6 wheel loaders, part of the Dash 6 generation. These robust machines are engineered for demanding operational environments, offering reliability and performance. The WA450-6 models are identified by serial numbers A44001 and up, while the WA480-6 models begin with serial number A38001 and up. These wheel loaders are designed for heavy-duty material handling tasks, embodying Komatsu's commitment to quality construction and operational efficiency. This manual is an essential resource for maintaining and repairing your Komatsu wheel loader. It covers a wide range of topics, including general information, structure, function, maintenance standards, testing, adjusting, troubleshooting, and detailed disassembly and assembly procedures. With step-by-step operations and actual photo illustrations, schemes, and diagrams, this guide empowers owners and technicians to perform maintenance and repairs effectively, enabling self-service and cost savings.