The 986 Tractor, produced between 1974 and 1979, represents a robust and reliable piece of agricultural machinery, building on a legacy of producing dependable farm equipment. Designed for demanding work, this tractor features a powerful diesel engine, likely a variant, offering approximately 100-130 horsepower and substantial torque. Its engineering prioritizes durability and operational efficiency, making it a capable workhorse for a wide range of farming tasks. Notable for its mechanical focus, the 986 Tractor eschews modern electronic systems in favor of proven, functional design, ensuring straightforward maintenance and repair. This comprehensive workshop service manual provides detailed information for the maintenance, repair, and overhaul of the 986 Tractor. It covers all essential systems, including the engine, transmission, hydraulics, electrical system, fuel system, cooling system, brakes, and steering. The manual offers routine maintenance schedules, step-by-step repair instructions, troubleshooting guides, and detailed wiring diagrams. Written in English, this manual is designed to assist both professional technicians and do-it-yourself mechanics in keeping their 986 Tractor in optimal working condition, serving as a cost-effective alternative to dealership service by empowering owners to perform their own upkeep and repairs.