The International Harvester (IH) 684 Tractor represents a robust and reliable utility tractor from the late 20th century, likely produced in the 1970s and early 1980s. Building on the esteemed legacy of International Harvester, known for its durable agricultural and industrial machinery, the 684 is a testament to quality engineering. This model, often built in the UK for global markets and later integrated into the Case IH product lines, is designed for a variety of agricultural tasks. Its inherent reliability and strong build quality make it a valuable asset for owners and operators. This comprehensive manual set provides an exhaustive resource for the maintenance, operation, and repair of the IH International Case 684 Tractor. It includes a Dealer Service Workshop Manual, an Aftermarket Shop Manual, and a Factory Owner's/Operator's Instruction Manual, all in English. The manuals cover critical systems such as the engine, fuel, cooling, electrical, hydraulic, transmission, brakes, and PTO, detailing procedures for maintenance, servicing, repair, troubleshooting, and component overhaul. This collection is an indispensable tool for DIY restorers, tractor mechanics, and owners aiming to preserve the longevity and performance of their 684 Tractor.