1. The JOHN DEERE S660 COMBINE TM803919 is a reliable and efficient agricultural machine designed to streamline the harvesting process. This online PDF manual provides comprehensive instructions and guidance on operating and maintaining the combine, ensuring optimal performance and longevity. With its advanced features and user-friendly interface, the JOHN DEERE S660 COMBINE TM803919 is a valuable asset for farmers seeking to enhance their productivity and maximize their yields.