This manual covers the Yamaha 30ESK outboard motor, produced in 1985. Engineered for reliability and performance, this 2-stroke gasoline-powered unit delivers 30 horsepower, making it suitable for a variety of marine applications. Yamaha's commitment to quality is reflected in the robust design and advanced features of this outboard motor, ensuring dependable operation on the water. This comprehensive Service Repair Maintenance Manual provides detailed guidance for owners and technicians. It includes step-by-step instructions, detailed wiring and circuit diagrams, illustrations, photos, and exploded views to assist with all aspects of maintenance and repair. Coverage encompasses general information, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, electrical system, specifications, diagnostics, and troubleshooting, ensuring the optimal performance and longevity of your Yamaha 30ESK.