This manual covers the Yamaha 25BMH and 30HMH outboard motors. These engines are designed for reliable performance in various marine applications, offering 25 horsepower for the 25BMH model and 30 horsepower for the 30HMH model. The motors are available with short (S) or long (L) shaft lengths, catering to different boat configurations. Their robust engineering ensures durability and consistent power output, making them a dependable choice for recreational and professional use. This Service Repair Manual provides comprehensive guidance for maintaining and repairing your Yamaha outboard motor. It includes detailed information on general operations, technical specifications, periodic checks and adjustments, and specific procedures for the fuel system, power unit, lower unit, and electrical system. The manual also features a dedicated section for trouble analysis, offering solutions to common issues. With included diagrams and a complete parts list with pictures, this German-language manual is an essential resource for owners, mechanics, and technicians to ensure optimal performance and longevity of the engine.