Yamaha F300XA Outboard Motor. 25-Inch Shaft Mechanical Control Electric Start Power Trim & Tilt Gray. The Yamaha F300XA is a flagship offshore outboard built for power, precision, and long-term reliability. Delivering 300 horsepower from Yamaha's proven 4.2L V6 four-stroke platform, this engine combines strong midrange torque, smooth acceleration, and excellent fuel efficiency-making it a trusted choice for big center consoles, offshore sportfishers, and heavy multi-engine boats.. This mechanica