fits make: Yamaha. year: 1970–1990.

( Manufacturer Part Number: 6H1-43800-13-4D ), ( Part Type: Hp Motor Unit )
The Yamaha 6H1-43800-13-4D is a powerful and versatile 2-stroke outboard boat motor that offers an impressive range of horsepower options, from 60 to 90 HP. This unit is part of Yamaha's F6 series, which is renowned for its reliability, efficiency, and performance.
The 6H1-43800-13-4D is a 4-stroke displacement engine, but it offers the power and responsiveness of a 2-stroke engine. It features a high-compression, high-output 2-stroke cylinder block, which allows it to deliver exceptional performance and fuel efficiency. The engine is equipped with a digital electronic fuel injection system, which ensures precise fuel delivery for optimal engine performance and reduced emissions.
The motor also features Yamaha's exclusive 4-valve cylinder head design, which provides superior combustion efficiency and power output. This design also reduces engine heat, which helps to extend the life of the engine and improve its overall reliability.
The 6H1-43800-13-4D is equipped with a power tilt unit, which allows for easy adjustment of the engine angle to suit changing water depths and boat trim. The tilt unit features a heavy-duty hydraulic cylinder and a robust pivot pin, which ensures smooth and reliable operation.
The motor is also equipped with a water-cooled exhaust system, which helps to reduce engine heat and improve overall performance. The exhaust system features a muffler with a built-in heat shield, which reduces engine noise and protects the boat's hull from heat damage.
The 6H1-43800-13-4D is also equipped with a high-quality alternator, which provides plenty of power for charging batteries and running onboard electronics. The alternator is located on the drive shaft, which reduces vibration and ensures smooth operation.
In addition, the motor features a high-capacity oil pump and a large oil reservoir, which help to ensure proper lubrication of the engine and extend its life. The motor also features a high-quality fuel filter, which helps to remove impurities and ensure clean fuel delivery to the engine.
Overall, the Yamaha 6H1-43800-13-4D is a powerful and reliable 2-stroke outboard boat motor that is perfect for a wide range of boating applications. Its advanced features and proven performance make it an excellent choice for boaters who demand the best in engine performance and reliability.
Pros of Buying Yamaha 2-Stroke 60-90 HP Outboard Boat Motor Power Tilt Unit (6H1-43800-13-4D):1. Power and Versatility: The Yamaha 2-stroke outboard motor offers a wide range of power options, from 60 to 90 HP. This versatility allows you to choose the perfect engine for your specific boating needs.
2. Reliability and Durability: Yamaha is known for its high-quality and durable products. The 6H1-43800-13-4D outboard motor is built to last with its robust design and reliable engine.
3. Fuel Efficiency: Two-stroke engines, like the one in this motor, are typically more fuel-efficient than four-stroke engines. This can save you money in the long run.
4. Easy Maintenance: Two-stroke engines have simpler designs and require less frequent maintenance than four-stroke engines. This can make owning and operating the motor easier and more convenient.
5. Power Tilt: The power tilt feature allows for easy adjustment of the engine's angle, making it easier to dock and maneuver the boat in various water conditions.
Cons of Buying Yamaha 2-Stroke 60-90 HP Outboard Boat Motor Power Tilt Unit (6H1-43800-13-4D):1. Noise and Emissions: Two-stroke engines are generally louder and produce more exhaust emissions than four-stroke engines. This can be a concern for environmentalists and those who value quiet operation.
2. Fuel Mixing: Two-stroke engines require a fuel-oil mixture, which can be messy and require more frequent refueling.
3. Limited Torque: Two-stroke engines may not provide as much low-end torque as four-stroke engines, which can affect the boat's performance in certain situations.
Conclusion:The Yamaha 2-stroke 60-90 HP outboard boat motor power tilt unit (6H1-43800-13-4D) is a reliable and durable option for boaters who value power and versatility. Its fuel efficiency and easy maintenance are significant advantages, especially for those who frequently use their boats. However, the noise and emissions, as well as the requirement for a fuel-oil mixture, are drawbacks that should be considered. Ultimately, the decision to purchase this motor depends on your specific boating needs and preferences.
Recommendation:If you prioritize power, versatility, and ease of maintenance, the Yamaha 2-stroke 60-90 HP outboard boat motor power tilt unit (6H1-43800-13-4D) could be a great choice for you. However, if you value quiet operation and are concerned about emissions, you may want to consider a four-stroke engine instead. Regardless of your decision, make sure to research and compare different options to find the best fit for your needs.
Note the motor is a 2-wire on this trim unit.
Item: Yamaha 60 thru 90 hp 2-stroke tilt trim assembly. Condition: excellent condition as pictured.
Has been tested by a certified outboard mechanic.
This unit will fit many Yamaha 60 thru 90hp 2-stroke outboards from the early 1990late 2000year model's.