1. The John Deere 639, 649, 659 Hay and Forage Windrow Pickups All Inclusive TM408319 online PDF manual is a comprehensive guide designed to assist users in operating and maintaining their equipment effectively. This manual covers all aspects of the hay and forage windrow pickups, providing detailed instructions, diagrams, and troubleshooting tips to ensure optimal performance and longevity of the machinery. With this manual, users can easily access valuable information to enhance productivity and minimize downtime.