fits make: Yamaha. year: 1987–1991.

( Manufacturer Part Number: 6H3-43800-04-EK ), ( Size: 50hp ), ( Color: Gray ), ( Stroke: 3 Cyls )
The Yamaha Power Tilt Pro50HP (6H3-43800-05-EK and 6H3-43800-04-EK) is a versatile and powerful outboard engine, originally manufactured between 1987 and 1991. This engine is part of Yamaha's renowned lineup, known for their reliability, durability, and performance.
The Pro50HP engine is equipped with a 4-stroke, 2-cylinder, 4-stroke, OHV (Overhead Valve) design, offering a displacement of 50.0 cubic inches (810.4 cubic centimeters). This engine configuration provides a balance of power, efficiency, and quiet operation, making it suitable for various recreational and commercial applications.
The Pro50HP features a power tilt option, which allows for easy adjustment of the engine's angle in relation to the transom, providing better control in various water conditions and making docking and beaching easier. The engine's 50 horsepower output delivers ample thrust for boats up to 17 feet in length, ensuring a smooth and enjoyable boating experience.
The engine is equipped with a flexible fuel system, capable of running on both gasoline and E10 ethanol, providing greater fuel flexibility and reducing the likelihood of engine damage from using lower-grade fuel. The Pro50HP also includes a multi-point electronic fuel injection system, which delivers precise and efficient fuel delivery, ensuring optimal engine performance and reduced emissions.
The engine's design includes a water-cooled system, which helps to maintain engine temperature, even in high-load situations. The Pro50HP also features a durable and corrosion-resistant alloy cylinder block, a long-lasting reinforced aluminum alloy crankshaft, and high-quality bearing materials, providing a long service life and minimal maintenance requirements.
The Pro50HP's compact and lightweight design, combined with its easy-to-use features, makes it a popular choice among boaters. The engine is easy to install and can be used with a variety of mounting options, including inboard/outboard, outboard, and inboard applications.
In summary, the Yamaha Power Tilt Pro50HP (6H3-43800-05-EK and 6H3-43800-04-EK) is a reliable, powerful, and versatile outboard engine, suitable for various recreational and commercial applications. Its 4-stroke design, power tilt feature, and flexible fuel system make it a standout choice for boaters seeking a high-performance engine with minimal maintenance requirements.
The 6H3-43800-05-ek and 6H3-43800-04-ek Yamaha Power Tilt Pro50HP outboard motors, both manufactured between 1987 and 1991, have their unique advantages and disadvantages.
Pros of the 6H3-43800-05-ek and 6H3-43800-04-ek Yamaha Power Tilt Pro50HP:1. Powerful: Both models deliver 50 horsepower, which is suitable for medium-sized boats and for those who require a good amount of thrust for maneuvering and speed.
2. Reliability: Yamaha is known for its reliability and durability in building outboard motors. These models have been around for decades and have proven to be reliable for many boat owners.
3. Easy to maintain: The engines have straightforward designs, making maintenance and repairs relatively simple for DIY boat owners or professional mechanics.
4. Fuel efficiency: These engines are known for their fuel efficiency, which is essential for reducing operating costs and minimizing the impact on the environment.
Cons of the 6H3-43800-05-ek and 6H3-43800-04-ek Yamaha Power Tilt Pro50HP:1. Limited availability of parts: Since these engines are older models, finding new and replacement parts can be challenging and may require special ordering or searching through second-hand sources.
2. Outdated technology: Compared to newer models, these engines lack some of the advanced features and technologies that newer ones offer, such as electronic fuel injection, digital displays, and more efficient cooling systems.
3. Limited warranty coverage: Older engines like these may have more limited warranty coverage, which can make repairs more expensive if something goes wrong.
In conclusion, the 6H3-43800-05-ek and 6H3-43800-04-ek Yamaha Power Tilt Pro50HP outboard motors are reliable and powerful engines that offer good value for boat owners looking for a mid-range outboard motor. However, their age and limited availability of parts can make ownership more challenging and expensive in the long run.
If you are looking for a reliable engine with good performance and are comfortable with doing some maintenance yourself, these engines could be a great fit for you. However, if you prioritize having access to the latest technology and want a more comprehensive warranty, you may want to consider newer models.
Yamaha power trim tilt pro50hp 6h3 ek removed from a pro 50hp p50tlrp serial 6h5-l wire.