The RD500LC, produced between 1984 and 1985, stands as a legendary V4 two-stroke sportbike, embodying a rich racing heritage. Renowned as an apex predator of its era, this model features advanced technologies such as liquid cooling and the Power Valve System (YPVS), which optimize its performance across the rev range. Its engineering excellence, combined with a race-derived design, positioned it as a flagship machine, directly competing with other high-performance motorcycles of its time and earning acclaim for its exhilarating speed and handling. This comprehensive workshop repair service manual in English provides in-depth guidance for all aspects of the RD500LC. It covers essential maintenance procedures, routine inspections, and fluid changes, alongside detailed repair instructions for the engine, chassis, and electrical systems. Mechanics and owners will find extensive troubleshooting guides, clear wiring diagrams, and specific procedures for engine rebuilds and component servicing. The manual's professional-level detail ensures accurate and efficient upkeep, helping to maintain the performance and longevity of this iconic sportbike.