This manual covers the Yamaha F2.5MLHB, a first-generation F2.5 Series outboard motor produced in 2003. This four-stroke, single-cylinder, 74cc engine delivers 2.5 horsepower and features a water-cooled system and CDI ignition. Designed for reliable performance, it is equipped with a Mikuni VM10 carburetor and a 2.08:1 gear ratio, with a 20-inch long shaft and tiller handle control. Its robust engineering ensures dependable operation for various marine applications. This factory service repair maintenance manual provides comprehensive guidance for the Yamaha F2.5MLHB. It details step-by-step procedures, includes exploded diagrams, and covers essential maintenance tasks such as lubrication specifications for engine and gearcase oil, along with recommended maintenance intervals for break-in and regular service. The manual also outlines fuel and electrical system details, including recommended fuel types and spark plug specifications, all presented in a fully searchable and bookmarked English format to assist owners and technicians in maintaining and repairing the unit.