This document covers Yamaha outboard motors, including models such as the C115X, 115X, S115X, B115X, 130X, S1340X, and L130X. These four-stroke engines feature electronic fuel injection (EFI) and CDI ignition, delivering 115 HP or 130 HP. They are water-cooled and designed for reliable performance, typically utilizing remote controls for operation. The engines are available with shaft lengths of 20, 25, or 30 inches, and weigh approximately 360-390 lbs, making them suitable for a range of marine applications. This Factory Service Manual (FSM) in English provides comprehensive guidance for maintaining and repairing your Yamaha outboard motor. It details essential procedures for the fuel system, power unit, lower unit, bracket unit, and electrical system. The manual includes specifications, troubleshooting advice for common issues, and information on periodic inspections and adjustments. By following the instructions within this manual, owners and technicians can ensure the optimal performance, longevity, and safety of their Yamaha engine.