This manual covers the Yamaha 20MSHU, a 1996 model year outboard motor designed for marine propulsion. Engineered by Yamaha Motor Corporation, this 2-stroke, 20-horsepower gasoline engine features an inline 2-cylinder configuration and a CDI ignition system. Its robust construction and reliable performance make it a dependable choice for various marine applications. The outboard gearcase transmission ensures efficient power delivery for a wide range of boating activities. The purpose of this English-language Service Repair Maintenance Manual is to provide comprehensive guidance for the upkeep and repair of your Yamaha 20MSHU outboard motor. It details all disassembly, repair, assembly, and inspection operations, supported by exploded diagrams before each disassembly section. Included are scheduled maintenance procedures, recommended oil types such as Yamalube 2-M, and information on starting systems. This manual is an essential resource for owners, mechanics, and technicians to ensure the longevity and optimal performance of the motor.