This workshop service and repair manual covers the Zetor 3320-6340 Series Tractors, a range of utility and specialized agricultural machinery known for their robust engineering and reliability. Manufactured by Zetor, a Czech company with a long heritage in agricultural equipment, these tractors likely span production from the late 20th to early 21st century. The series offers varying horsepower and features, from compact utility models to more powerful variants, all designed for demanding farm work. These tractors typically feature diesel engines from Zetor's Z-engine series, likely 3- or 4-cylinder configurations, paired with manual transmissions offering multiple gear options. This comprehensive manual is designed to assist professional technicians, farm mechanics, and owner-operators in maintaining and repairing their Zetor 3320-6340 Series Tractors. It provides detailed information on routine maintenance, including service intervals and fluid specifications for engine oil, hydraulic fluid, and coolant. The manual also covers in-depth troubleshooting guides, step-by-step repair instructions, and overhaul procedures for major systems such as the engine, transmission, electrical, and hydraulic systems. Additionally, it includes essential technical specifications, wiring diagrams, and torque values, enabling users to perform diagnostics, part replacements, and complex repairs effectively, thereby ensuring the longevity and optimal performance of their equipment.