This service manual covers the Yamaha S225X marine outboard. Designed for reliability and performance, this model represents Yamaha's commitment to engineering excellence in marine propulsion. Its robust construction and advanced features ensure a dependable boating experience for a wide range of applications, from recreational cruising to demanding professional use.

This comprehensive manual provides detailed guidance for the maintenance, repair, and troubleshooting of your Yamaha S225X outboard. It includes essential information on general procedures, system specifications, periodic inspections and adjustments, and in-depth coverage of the fuel system, power unit, lower unit, bracket unit, and electrical system. Furthermore, a dedicated section on trouble analysis will assist in diagnosing and resolving common issues, empowering owners and technicians to keep the engine operating at peak efficiency.