This manual covers the Yamaha 600/700 Triples Snowmobile models produced from 1997 through 2002. These snowmobiles are powered by liquid-cooled, 2-stroke, 3-cylinder engines, with displacements of approximately 597cc for the 600 models and 698cc for the 700 models, delivering a horsepower range typically between 90-140+ HP. Known for Yamaha's strong heritage in powersports, these triple engines were generally well-regarded for their reliability and smooth power delivery. The snowmobiles feature a Continuously Variable Transmission (CVT) with Yamaha's proprietary clutch system, independent front suspension, and coupled rear suspension. This comprehensive professional service and repair manual provides factory-level detail for all aspects of maintenance, troubleshooting, and repair. It includes step-by-step instructions, hundreds of pages of content, and extensive, highly detailed exploded diagrams and photos. Coverage encompasses engine mechanicals, fuel and ignition systems, cooling, drive, suspension, brakes, and electrical systems, as well as chassis and bodywork. Routine maintenance, rebuilding procedures, adjustment procedures, and component replacement are thoroughly explained, making it an invaluable resource for DIY enthusiasts, independent repair shops, and professional mechanics seeking to maintain and repair these Yamaha snowmobiles.