The Yamaha Ovation CS340, produced from 1989 to 1999, represents a reliable and well-engineered snowmobile designed for recreational trail riding. Known for Yamaha's strong legacy in snowmobile manufacturing, the Ovation series, including the CS340 model, offers a blend of comfort and performance. This particular model, powered by a 337cc two-stroke engine and featuring a Continuously Variable Transmission (CVT) with forward, neutral, and reverse gears, was a popular choice for its dependable operation and suitability for general trail use. Its robust construction and commitment to quality ensure a satisfying ownership experience for enthusiasts. This comprehensive Service Repair Manual provides detailed guidance for owners, DIY mechanics, and technicians. It covers essential areas including general information, periodic inspections and adjustments, chassis components, the power unit, powertrain, and the electrical system. The manual offers in-depth procedures for routine maintenance, component diagnosis, engine overhaul, fuel system calibration, and electrical troubleshooting, all supported by step-by-step instructions, illustrations, and diagrams. With its extensive technical specifications and troubleshooting guides, this manual is an indispensable resource for maintaining and repairing the Yamaha Ovation CS340, ensuring its longevity and optimal performance.