This manual covers the Yamaha LZ300TR outboard motor, produced from 2004 to 2006. This powerful 2-stroke, V6 engine displaces 48.8 cubic inches (800 cc) and delivers 300 horsepower, featuring fuel injection and CDI ignition for efficient performance. Its robust water-cooled system and electric start ensure reliable operation, while the power trim and tilt system enhances maneuverability. Designed for demanding marine applications, the LZ300TR is engineered for durability and performance. This comprehensive Service Repair Workshop Manual in English provides essential information for mechanics. It details maintenance procedures, including lubrication with Yamalube 2-stroke oil and specific fuel-oil ratios for premix, along with service intervals starting at 10 hours or 1 month. The manual also covers technical specifications for the engine, transmission, electrical, and cooling systems, offering guidance for proper upkeep and repair to ensure the longevity and optimal function of your Yamaha LZ300TR outboard motor.