1. The JOHN DEERE 640G-III and 648G-III, along with the TIMBERJACK 460D and 460DG, are powerful skidders designed for efficient timber harvesting. This online PDF manual, TM1086, provides comprehensive instructions and technical information to assist operators in maximizing the performance of these machines. With detailed diagrams, troubleshooting tips, and maintenance procedures, this manual is an invaluable resource for anyone working with these skidders. Whether you are a professional logger or a machine enthusiast, this online PDF manual will ensure smooth operations and optimal productivity.