This manual pertains to the 6640, a utility tractor designed for a range of agricultural and property maintenance tasks. Tractors are known for their robust engineering and reliability, offering practical solutions for owners who require dependable performance. The 6640 model exemplifies this commitment, providing a solid foundation for various operational needs, from fieldwork to property management. This comprehensive parts catalog is presented in English and formatted as a PDF, ensuring broad accessibility and ease of use across multiple devices. It covers all essential tractor systems, including the engine, transmission, hydraulics, chassis, electrical components, and operator station, with detailed exploded views and part numbers. The manual is an indispensable resource for do-it-yourself mechanics, tractor owners, and restoration enthusiasts, facilitating accurate part identification, efficient repairs, and complete rebuilds. Its detailed illustrations and clear part references support maintenance, refurbishment, and troubleshooting efforts, empowering users to maintain their 6640 effectively.