This factory service manual covers the Yamaha F80TLRX outboard motor, manufactured in 1999. This four-stroke, gasoline-powered outboard motor delivers 80 horsepower and is engineered for reliability and optimal performance in marine applications. Its robust construction and advanced design ensure dependable operation for a variety of boating needs, making it a trusted choice for demanding environments. This comprehensive manual provides detailed information essential for the service, repair, and maintenance of your Yamaha F80TLRX. It includes step-by-step instructions, general information, periodic inspection and adjustments, and in-depth coverage of the fuel system, power unit, lower unit, bracket unit, and electrical system. With detailed diagrams, photos, exploded views, and troubleshooting guidance, this manual is an indispensable resource for owners and technicians seeking to maintain the peak condition and longevity of their outboard motor.