This manual covers the Yamaha Enticer snowmobiles, specifically the ET340 and ET400 TR models, manufactured between 1988 and 1990. These first-generation Enticer models were designed for reliable trail performance, emphasizing user-friendliness and durability, hallmarks of Yamaha's legacy in snowmobile engineering. The ET340 and ET400 TR are equipped with fan-cooled, twin-cylinder, 2-stroke engines and feature a Continuously Variable Transmission (CVT) system for optimized power delivery across various conditions. Their robust construction and focus on low-end torque make them well-suited for recreational trail riding. The purpose of this comprehensive Factory Service Workshop Repair Manual is to provide detailed, factory-authorized information for the maintenance, repair, and troubleshooting of your Yamaha Enticer. It covers all essential systems, including engine removal and overhaul, fuel system servicing, powertrain components, chassis elements, and electrical systems. With 199 pages of English-language content, this manual offers step-by-step procedures, diagnostic guidance, and technical specifications, empowering owners and technicians to maintain the vehicle's reliability and performance accurately, thereby preventing costly mistakes and minimizing downtime.