This document details the Yamaha 225TLRS outboard motor, manufactured in 1994. Designed for marine propulsion, this internal combustion gasoline engine delivers 225 horsepower through an outboard drive system. Yamaha is renowned for its engineering quality and reliability, and this model exemplifies their commitment to robust performance for demanding marine applications. This factory service manual, written in English, provides comprehensive guidance for maintaining and repairing your Yamaha 225TLRS. It covers general information, the fuel system, power unit, lower unit, bracket unit, and electrical system. Detailed troubleshooting guides, periodic inspection and adjustment procedures, diagnostics, and step-by-step instructions are included, supported by detailed wiring diagrams, circuit diagrams, illustrations, photos, and exploded views to ensure accurate service.