This comprehensive service repair manual is your ultimate guide to maintaining, repairing, rebuilding, and restoring your Yamaha ATV YFM350ER MOTO 4, covering models from 1987 to 1990. It provides detailed instructions and diagrams for every aspect of your ATV, from basic maintenance tasks to complex engine overhauls. The manual is organized with a clear table of contents, allowing you to quickly locate the information you need. With hundreds of pages of detailed information, this manual covers everything from engine and transmission components to electrical systems, brakes, suspension, and more. Its depth and clarity make it an invaluable resource for both experienced mechanics and DIY enthusiasts.

The Yamaha YFM350ER Moto 4, produced from 1987 to 1990, marked a significant evolution in the ATV market. It was the first four-stroke ATV offered by Yamaha, a critical shift for the company known for its powerful two-stroke engines. This 347cc, air-cooled, single-cylinder engine provided a smooth and reliable power delivery, a stark contrast to the more aggressive performance of its two-stroke counterparts. The Moto 4 was designed for both recreational and utility purposes, offering versatility for diverse riders. Its lightweight frame, coupled with a simple and robust engine, made it an easy-to-handle machine. The Moto 4's front and rear independent suspension provided a comfortable ride over rough terrain, while its durable construction ensured resilience in demanding off-road conditions. The YFM350ER Moto 4 was praised for its reliability and ease of maintenance, solidifying its reputation as a strong and durable ATV. It became a popular choice for both novice and experienced riders, offering a balance of power, handling, and user-friendliness. The Moto 4's impact transcended its initial production run, laying the groundwork for Yamaha's continued dominance in the four-stroke ATV market. Its influence can still be seen in the design and features of modern Yamaha ATVs, reflecting the enduring legacy of this pioneering model. While the YFM350ER Moto 4 is no longer in production, its unwavering reliability and versatility remain a testament to Yamaha's commitment to building high-quality and performance-driven machines.