This comprehensive Service Repair Manual provides all the information you need to service and repair your Yamaha Marine Outboards 6C and 8C models, including the 6MHR/6CM, 6CEM, 8MHR/8CM, 8CEM, 6MHS/6CM, 6CEM, 8MHS/8CM, and 8CEM series. The manual covers a wide range of topics, providing detailed instructions and specifications for every aspect of your outboard motor. You'll find step-by-step procedures for disassembling and reassembling components, diagnosing and troubleshooting issues, and performing routine maintenance tasks. Clear illustrations and diagrams accompany the text, making it easy to understand the repair process. This manual includes sections covering general information, specifications, periodic inspection and adjustments, fuel system, power unit, lower unit, bracket unit, electrical system, and troubleshooting. With this manual, you'll have the knowledge and confidence to service and repair your Yamaha outboard motor yourself, saving you time and money. The manual covers the following models and starting serial numbers: * **6MHR/6CM:** S:025559, L:315710, UL:700192 * **6CEM:** S:100683, L:400960 * **8MHR/8CM:** S:049042, L:334990, UL:702185 * **8CEM:** S:101872, L:402378, UL:750406 * **6MHS/6CM:** S:027446, L:316958, UL:700192 * **6CEM:** S:100733, L:401087 * **8MHS/8CM:** S:051779, L:337151, UL:702405 * **8CEM:** S:101997, L:402645, UL:750441

The Yamaha Marine Outboards 6C and 8C series represent a range of reliable and powerful outboard motors designed for a variety of marine applications. These models are known for their durability, fuel efficiency, and smooth operation, making them popular choices for both recreational and commercial boaters. The 6C and 8C designations refer to the number of cylinders in the engine, with 6C models featuring a 6-cylinder and 8C models boasting an 8-cylinder configuration. These powerful engines deliver impressive performance, offering both high horsepower and torque for smooth acceleration and effortless cruising. Yamaha's 6C and 8C outboard motors are available in a variety of configurations, each tailored for specific needs. The 6MHR/6CM 6CEM, 8MHR/8CM 8CEM, and 6MHS/6CM 6CEM 8MHS/8CM 8CEM designations indicate different engine variations. The "M" signifies a four-stroke engine, while "H" represents a high-thrust model designed for maneuvering in shallow waters or heavy loads. Variations like "R" or "S" indicate shaft lengths, allowing boat owners to select the appropriate configuration for their hull and intended use. The Yamaha Marine Outboards 6C and 8C series are equipped with sophisticated features that enhance user experience and performance. Yamaha's proprietary technologies, such as the "Command Link" system, offer advanced engine monitoring and control, allowing boaters to access vital information, adjust engine settings, and optimize performance from the helm. The "Premier" series, including the 8MHR and 8MHS models, boasts even more advanced features, such as digital gauges, electric steering, and integrated trolling systems. Overall, the Yamaha Marine Outboards 6C and 8C series offer a range of powerful and reliable engines designed to cater to a wide range of marine applications. Whether you are looking for a top-of-the-line outboard for recreational boating or a powerful and versatile engine for commercial fishing, these models offer the performance, durability, and fuel efficiency to meet your needs.