This service repair manual covers Yamaha C85 outboard motors manufactured between 1989 and 1995. Designed for marine propulsion, these 2-stroke outboard motors deliver 85 horsepower and are built with Yamaha's renowned engineering quality and reliability. This manual provides essential information for understanding, maintaining, and repairing your C85 model, ensuring optimal performance and longevity on the water. The purpose of this manual is to serve as a comprehensive guide for owners, technicians, and mechanics. It details general information, periodic inspections and adjustments, fuel system, power unit, lower unit, electrical system, and bracket unit maintenance. With step-by-step instructions, detailed wiring and circuit diagrams, illustrations, photos, and exploded views, this manual facilitates efficient troubleshooting and repair. Diagnostic capabilities are also included, making it an indispensable resource for keeping your Yamaha C85 operating at its best.