The David Brown 1494, 1594, and 1690 series tractors represent a lineage of robust agricultural machinery built upon a heritage of British engineering. These models, produced during the later era of David Brown's independent tractor manufacturing, were designed to meet the demanding needs of farming with a focus on reliability and performance. Known for their solid construction and functional design, these tractors were a staple in agricultural operations, offering dependable service for a wide range of tasks. Their evolution from earlier designs incorporated advancements in power, transmission, and hydraulic systems, making them capable workhorses for their time. This workshop repair service manual provides comprehensive documentation for the David Brown 1494, 1594, and 1690 series tractors, covering all models, engines, trim, and transmission types. It is written with the full technical depth expected by professional technicians, detailing everything from routine maintenance and fluid specifications to advanced troubleshooting and complete rebuild procedures. The manual includes in-depth coverage of all major systems, including the engine, lubrication, cooling, fuel, transmission, brakes, steering, and electrical systems, along with detailed repair and diagnostic procedures. Its clear format, featuring illustrations and numbered instructions, ensures that owners, independent repair shops, and agricultural mechanics can effectively maintain and repair these tractors, leading to significant cost savings and prolonged operational life.