What Is 15 HP Yamaha 2 Stroke Outboard Motor?

15 HP Yamaha 2 Stroke Outboard Motor 6B4 is a best-selling model that balances performance and portability, making it the top choice for small boats and canoes, thanks to its robust durability. 6B4's mature two-stroke technology and 38 kg gross weight not only provide powerful acceleration but also enable easy single-person transport. Whether venturing to tranquil inland lakes or the salt-laden waters of the open ocean, the 6B4 15HP boat motor delivers a pull-to-ignite, safe, and reliable water experience.

Technical Specifications

Product Name	15 HP Yamaha 2 Stroke Outboard Engine	Product Type	Two Stroke Chinese Outboard Motor
Rated Power	15HP	Engine Type	In-Line 2
Displacement	246CC	Bore x Stroke	Bore x Stroke
Fuel Induction System	Carburetor	Max. Prop Shaft Output	11.0 (15) @5000
Engine Transom Height	S: 441MM & L: 568MM & X: 710MM	Dry Weight	38-41KG
Starting System	Manual Starter	Controls	Tiller Handle
Tilt System	Manual Tilt	Lubrication System	Pre-Mixed Fuel And Oil
Fuel Type	Gasoline	Product Quality	100% Tested
Delivery	Express & Air Freight & Sea Freight	Product Warranty	One Year 12 Months

Key Features Of

15 HP Yamaha 2 Stroke Outboard Motor is a compact and high-power-density power unit that operates with a fuel-oil mixed lubrication method. It is mainly suitable for small to medium-sized boats (such as fishing boats, rubber boats, and workboats). Due to its ability to output high torque at low speeds, it demonstrates excellent propulsion efficiency in heavy-load and rapid-flow conditions. Its powerful performance and long-lasting durability stem from the dual-cylinder structure that adopts a diaphragm valve for intake and an optimized design for cylinder wall scavenging. The key specifications of this model are as follows: The displacement is 246 cc, the cylinder diameter and stroke are 56 × 50 mm, and it can stably output a maximum power of 11 kW (15 HP) at a rotational speed of 5500 rpm. The compression ratio is set between 6.8:1 and 7.2:1. At the same time, it has excellent adaptability to premixed fuel (using unleaded gasoline and high-quality two-stroke engine oil in a 50:1 mixture) and can resist short-term corrosion in seawater, making it highly suitable for various water-based scenarios such as offshore operations, water patrol, aquaculture, and competitive fishing.

Benefits

1. Strong And Direct Power:

Featuring crisp, direct power output and responsive throttle, two-stroke outboard motors offer a more rapid power response than four-stroke outboard motors.

2. Light Weight And Portable:

Two Stroke boat motors are also lighter. The 15hp two-stroke outboard motor boasts excellent weight control, allowing for easy installation and disassembly by a single person. This eliminates concerns about single-person operation, making it ideal for owners of small boats such as inflatable boats, aluminum alloy boats, and fiberglass boats.

3. Easy To Maintain:

As is well known, fewer structural components mean simpler operation and easier maintenance. The durability of two-stroke outboard engines is proven in the market, exhibiting extremely high stability in both seawater and freshwater.

4. High versatility:

2 Stroke outboard engines are highly adaptable and versatile, suitable for a wide range of applications. They are ideal not only for recreational fishing but also for aquaculture inspections and short-distance transportation.

Suitable For

A small engine is ideal for small boats and dinghies. It's important to note that if your boat is longer than 4.5 meters, this 15-horsepower two-stroke outboard motor is strongly discouraged. This 15hp outboard motor suitable for:

1. Small Aluminum Alloy Boats Between 3 And 4.3 Meters In Length:
However, it's perfect for small aluminum alloy boats between 3 and 4.3 meters in length. The lightweight hull of an aluminum alloy boat, combined with a lightweight two-stroke outboard motor, is a perfect match. Acceleration is good, handling is agile, and the ride is smooth.

2. Inflatable Boats And Rubber Boats:
It's also suitable for inflatable boats and rubber boats. These boats are very sensitive to weight; an overly heavy engine can affect the boat's balance. The weight of a two-stroke outboard motor perfectly solves this problem.

3. Small Fiberglass Fishing Boats Or Workboats:
It's also suitable for small fiberglass fishing boats or workboats. Workboats are frequently used for aquaculture patrols, reservoir management, or scenic water surface maintenance. This 6B4 engine not only provides smooth operation at low speeds but also offers ample power for rapid relocation.