The Polaris Apollo, a distinguished snowmobile from 1980, represents a significant chapter in recreational snowmobiling. Engineered for reliability and performance, this model embodies the robust construction and user-focused design that characterized Polaris's offerings during its manufacturing era. Known for its capability in varied snow conditions, the Apollo was built to provide an enjoyable and dependable experience for riders. Its design prioritized durability and ease of operation, making it a popular choice for enthusiasts seeking adventure in winter environments. This comprehensive English-language factory service manual offers detailed guidance for the Polaris Apollo snowmobile. Covering a wide array of systems, including engine overhaul, carburetor tuning, ignition, cooling, and fuel systems, as well as drivetrain components like clutches and the track system, this manual is an essential resource. It also details electrical systems, brakes, chassis, and bodywork. The manual provides step-by-step instructions for routine maintenance, complex repairs, diagnostic procedures, and performance tuning, supported by hundreds of illustrations. Its purpose is to empower owners and technicians to effectively maintain, troubleshoot, and repair the vehicle, ensuring its longevity and optimal performance.