This manual covers the 1991 Yamaha C55ELRP, an outboard motor designed for reliable performance on the water. Featuring a 55 HP, 794cc inline 3-cylinder engine with CDI ignition and water cooling, this model is equipped for various boating applications. Its robust construction and efficient fuel induction system, utilizing carburetors, underscore Yamaha's commitment to engineering excellence. The transmission offers Forward, Neutral, and Reverse (F-N-R) capabilities with a 2.00:1 gear ratio, and the long shaft design is suitable for a range of hull types. This comprehensive Service Repair Maintenance Manual provides essential information for the proper upkeep and repair of your 1991 Yamaha C55ELRP. Inside, you will find detailed procedures for maintenance tasks, troubleshooting guides for common issues, and critical technical specifications, including lubrication requirements, recommended fuel types, and spark plug details. Organized with step-by-step instructions and exploded diagrams, this manual is an indispensable resource for owners, technicians, and mechanics seeking to ensure the longevity and optimal performance of their outboard motor.