The Suzuki LT250R, also known as the QuadRacer, is a high-performance sport ATV produced from 1988 to 1992. Built with heritage from the RM250 motocross platform, this model is renowned for its potent liquid-cooled, 2-stroke engine, delivering approximately 30-35 horsepower, and its long-travel independent front suspension coupled with a Pro-Link style rear suspension for superior adjustability and ride quality. Designed for enthusiasts and racers, the LT250R excels in motocross and trail riding, offering a competitive edge through its robust engineering and focus on rider input, distinguishing itself as a significant player in the sport ATV market of its era. This comprehensive workshop service repair manual provides detailed guidance for the Suzuki LT250R models from 1988 to 1992. It covers all essential systems, including engine mechanicals, drivetrain, suspension, steering, brakes, and body electrical systems. The manual offers step-by-step instructions for routine maintenance, troubleshooting common issues, and complete component rebuilds, supported by detailed illustrations, diagrams, and wiring schematics. With specific torque specifications and fluid recommendations, this resource is invaluable for both DIY enthusiasts and professional mechanics seeking to maintain, repair, and optimize their QuadRacer's performance.