Description
Discover For Yamaha 4 hp outboard motor For It’s Engine Designed For Small Boats.
Yamaha 4 hp outboard motor is a compact and reliable engine designed for small boats, tenders, and inflatables. This article provides an in-depth look at its features, specifications, and addresses common questions to assist potential buyers in making informed decisions.
Engine Specifications and Performance
The Yamaha 4 HP outboard motor is powered by a 139cc, single-cylinder, four-stroke engine. It delivers 4 HP at 4,500 revolutions per minute (RPM) and operates within a full-throttle range of 4,000 to 5,000 RPM. The engine features a carbureted fuel induction system and has a compression ratio of 8.9:1. Weighing approximately 59 pounds (27 kilograms) for the 15-inch shaft model, it is available in both 15-inch and 20-inch shaft lengths to suit various boat transoms. Yamaha 4 hp outboard motor for sale.

Design and Portability
Yamaha’s 4 HP outboard is designed with portability in mind. Its lightweight construction, combined with built-in carrying handles, makes it easy to transport and mount. The engine features a streamlined overhead-valve design, contributing to its compact size and efficient performance. Additionally, the 3-position storage system prevents oil leaks when the motor is stored on its side. Yamaha 4 hp outboard motor near me.
Fuel Efficiency and Capacity
This outboard motor comes equipped with a built-in fuel tank, offering convenience for short trips. For extended range, it provides the option to connect an external fuel tank, enhancing its versatility for longer excursions. Purchase Yamaha 4 hp outboard motor.

Maintenance and Durability
Regular maintenance is crucial to ensure the longevity and optimal performance of the Yamaha 4 HP outboard motor. Routine tasks include checking and changing the engine oil, inspecting the spark plug, and ensuring the cooling water passages are clear. The owner’s manual provides detailed maintenance schedules and procedures. Yamaha 4 hp outboard for sale
Common Questions About the Yamaha 4 HP Outboard
1.What type of fuel does the Yamaha 4 HP outboard require?
The recommended fuel is 87 octane gasoline.
2.Does the Yamaha 4 HP outboard come with an alternator?
Yes, it features a 6-amp alternator, providing power for charging batteries or running small electronics.
3.Is the Yamaha 4 HP outboard suitable for saltwater use?
Yes, it is designed for both freshwater and saltwater environments. Regular maintenance, including flushing with fresh water after saltwater use, is essential to prevent corrosion.
4.Can the Yamaha 4 HP outboard be transported easily?
Yes, its lightweight design and built-in carrying handles make it highly portable, ideal for small boats and as a secondary engine.

5.What are the noise and vibration levels of the Yamaha 4 HP outboard?
Some users have reported that single-cylinder engines like the Yamaha 4 HP can exhibit noticeable vibration and noise during operation.
6.What is the fuel consumption rate of the Yamaha 4 HP outboard?
At 4,500 RPM, the fuel consumption is approximately 1.7 liters per hour.
7.How does the Yamaha 4 HP outboard compare to other models in terms of weight?
Weighing around 59 pounds, it is considered lightweight and comparable to other outboards in its class.
8.Is there an electric start option available for the Yamaha 4 HP outboard?
No, the Yamaha 4 HP outboard features a manual start system.
9.What is the warranty period for the Yamaha 4 HP outboard?
Warranty terms can vary by region and dealer; it’s advisable to consult with an authorized Yamaha dealer for specific warranty information.
10.Are there any common issues reported with the Yamaha 4 HP outboard?
Some users have noted that single-cylinder engines may have more vibration compared to multi-cylinder models. However, many users report satisfaction with its reliability and performance.
Conclusion
The Yamaha 4 HP outboard motor offers a blend of portability, efficiency, and reliability, making it a suitable choice for small boat owners and those seeking a lightweight auxiliary engine. Its user-friendly features and solid performance have garnered positive feedback from users. Prospective buyers should assess their specific boating needs and consult with authorized Yamaha dealers to ensure this model aligns with their requirements.
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