John Deere traces its history to 1837, when blacksmith John Deere built a self-scouring steel plow at Grand Detour, Illinois, that solved a problem common to Midwest farmers. The company soon relocated to Moline, Illinois, where it remains headquartered today.

Deere entered the tractor business by acquiring Waterloo Boy in 1918 and went on to build classic lines including the lettered A, B and G tractors, the New Generation series introduced in 1960, and today's 8R tractors. The company also produces combines and Gator utility vehicles, powered by its PowerTech diesel engine families built in Waterloo, ranging from 4.5L and 6.8L displacements up to larger sizes, alongside smaller engines for compact and lawn equipment.

The manuals available here are component technical manuals covering engine overhaul and service procedures, transmission and drivetrain work, electrical systems and wiring diagrams, torque specifications, diagnostics and scheduled maintenance for John Deere equipment.

These manuals serve DIY farm equipment owners, independent repair shops and restorers who need accurate factory procedures for rebuilding or maintaining John Deere engines and machines, from vintage lettered tractors to modern equipment. Because John Deere equipment spans decades of design changes, the component technical manuals also cover hydraulic systems, cooling system service and fuel system diagnostics, giving technicians a complete picture of how each system works together across older and newer machines.