This manual covers the Zetor 8011, 8045, 12011, and 12045 tractor models, representing a range of robust and reliable agricultural machinery from the Zetor brand, originating from the Czech Republic. These utility tractors, likely produced in the late 20th century, are known for their durability and operational simplicity. They are designed for demanding agricultural tasks, offering dependable performance through their diesel engines, manual transmissions, and integrated hydraulic systems. The engineering quality of Zetor tractors ensures they are a valuable asset for farm operations. The Zetor 8011, 8045, 12011, 12045 Tractor Service Repair Workshop Manual provides comprehensive information for owners, independent repair shops, and mechanics. This manual details scheduled maintenance, lubrication, fluid changes, and offers step-by-step diagnostic procedures for troubleshooting common and complex issues. It includes detailed instructions for component repair, overhaul, and disassembly/assembly of all major systems, including the engine, transmission, drivetrain, hydraulics, electrical, braking, steering, cooling, and fuel systems. With factory-level accuracy and clear, concise text, this manual is designed for ease of use by individuals with basic mechanical knowledge up to professional technicians, aiming to save significant costs on repairs and maintenance.