The 7120 tractor represents robust engineering within the heavy agricultural machinery sector, building on the legacy of the 7100 series. Renowned for their advanced features and performance during their production era, these tractors were designed for demanding agricultural applications. This manual provides comprehensive coverage for owners and technicians seeking to maintain the reliability and operational efficiency of their 7120. This complete factory service repair manual offers extensive guidance for the 7120 tractor. It details routine maintenance, step-by-step repair procedures, and advanced troubleshooting for all major systems, including the engine, lubrication, cooling, fuel, drivetrain, brakes, steering, suspension, body, intake, exhaust, and hydraulic systems. With numbered instructions, detailed substeps, illustrations, and diagrams, this manual serves as an indispensable resource for performing diagnostics, repairs, and rebuilds, enabling users to maintain their equipment effectively and potentially reduce labor costs.