This manual covers the Yamaha 4MLHS, a 1994 model featuring a 2-stroke, water-cooled engine with a displacement of 69 cc and approximately 4 horsepower. Designed for reliable performance, this outboard motor utilizes a CDI ignition system and a manual start. Its transmission offers Forward, Neutral, and Reverse gears. The engine requires a pre-mix fuel mixture of gasoline and oil, and its robust engineering ensures dependable operation for various marine applications. The purpose of this comprehensive English-language service repair maintenance manual is to provide detailed guidance for the disassembly, repair, assembly, and inspection of the Yamaha 4MLHS. It includes essential technical specifications, maintenance procedures such as gear oil changes and spark plug replacement, and troubleshooting information. With the inclusion of exploded diagrams, this manual serves as an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their 1994 Yamaha 4MLHS outboard motor.