This manual provides essential information for the operation and maintenance of the Komatsu D85EX-15 and D85PX-15 bulldozers. It includes detailed instructions on operating procedures, safety guidelines, and machine controls. The manual covers routine maintenance tasks such as fluid checks, filter replacements, system inspections, and lubrication, along with recommended maintenance schedules to ensure optimal performance and longevity. It also provides troubleshooting tips, technical specifications, and instructions for proper handling and storage. This document is crucial for operators and maintenance personnel to maintain the efficiency, safety, and reliability of the Komatsu D85EX-15 and D85PX-15 bulldozers.