The Yamaha 90HP outboard engine service manual and Jet Drive Service Manual cover all two-stroke and four-stroke models from 1996 to 2006. This manual is suitable for professional mechanics and DIY enthusiasts. It encompasses both the two-stroke and four-stroke motors, with a focus on 3 & 4 cylinder motors and carburetor models.
This comprehensive service manual provides detailed procedures for the complete engine, including removal and installation of components. The chapters in the manual cover general information, specifications, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical system.
The troubleshooting section addresses various issues such as engine starting difficulties, rough idle, stalling, poor deceleration, overheating, loose steering, hard shifting, poor battery charging, and oil injection problems. This manual is compatible with all computers and does not require any special software.
