The Suzuki LT500R, a prominent model from its first generation, represents a pinnacle of performance in the late 1980s sport ATV market. Produced between 1987 and 1990, this machine, often known as the "Quadzilla," was engineered with a robust 499cc liquid-cooled, 2-stroke, single-cylinder engine, delivering approximately 45-50 horsepower. Its design focused on raw power and agility, featuring a 5-speed manual transmission, wet multi-plate clutch, and hydraulic disc brakes for responsive control. Suzuki's legacy in ATV manufacturing, known for durability and performance, is clearly evident in the LT500R's design and its reputation for class-leading power during its production era. This comprehensive factory service repair workshop manual provides in-depth guidance for the Suzuki LT500R across all its styles from 1987 to 1990. It covers a vast array of systems, including general information, fuel, cooling, engine top-end, clutch, lubrication, removal and installation, crankshaft and transmission, wheels, tires, final drive, brakes, suspension, steering, frame, and the electrical system. The manual offers step-by-step repair procedures, standard maintenance guidelines, and detailed technical specifications, supported by hundreds of photos and illustrations. It is designed to assist both do-it-yourself enthusiasts and experienced mechanics in maintaining and repairing the vehicle effectively, ensuring optimal performance and longevity.