Small Four-stroke Outboard Fishing Boat Stern Drive Propeller Motor Propulsion Unit
Outboard Motor Model |
JP9.0 |
Displacement (ml) |
225 |
Bore × Stroke (mm) |
72×55 |
Compression Ratio |
8.7:1 |
Maximum Power (kw/r/min) |
>4.5/3600 |
Maximum Torque (Nm/r/min) |
13/2600 |
Minimum Fuel Consumption (G/KW.H) |
>395 |
Fuel Tank Capacity (L) |
1.3 |
Lubricating Oil Capacity (L) |
0.6 |
Spark Plug Gap (mm) |
0.6-0.8 |
Ignition System |
Transistorized Contactless Electronic Ignition (TCI) |
Propeller Configuration |
2-Blade Anti-Fouling |
Mounting Height |
40-70 (from mounting point to propeller) |
Transmission Mode |
Solid Shaft, Splined Shaft Drive |
Installation Method |
Fixed Support Frame with Clamping Bracket |
Steering Method |
180° Rotating Mechanism |
Starting Method |
Pull-Start |
Net/Gross Weight (kg) |
26/29 |
Package Dimensions |
115×45×34 |
Brief Introduction to Outboard Motors
The small four-stroke air-cooled outboard motor is a lightweight and high-efficiency marine propulsion device specially designed for small vessels (such as plastic boats, wooden boats and fiberglass fishing boats). It adopts a four-stroke cycle engine (intake, compression, combustion, exhaust) combined with an air-cooled heat dissipation system, eliminating the need for water-cooling devices, and features a compact structure and easy installation.
Its working principle is based on power generated by fuel combustion: the piston completes four strokes inside the cylinder, and the ignited fuel mixture pushes the crankshaft to rotate, which in turn drives the propeller to propel the vessel. The air-cooled system achieves natural cooling through the heat sinks on the engine casing and airflow from the fan, avoiding the complex pipelines and water pumps of water-cooled systems, thus enabling simple maintenance and low risk of clogging.
The main advantages are as follows:
High Efficiency and Environmental Friendliness: The four-stroke design ensures high fuel utilization rate, saving 20–30% of fuel consumption compared with two-stroke models, and greatly reducing exhaust emissions, which is in line with the trend of green navigation.
Durable and Low-Maintenance: The air-cooled structure has no liquid cooling components, reducing the overall weight (the whole machine usually weighs 20–50 kg) and the risk of corrosion, making it suitable for long-term use in both freshwater and seawater environments.
Cost-Effective and Practical: It features low purchase cost and easy starting, making it ideal for individual users and small vessels.
Mobile No.:18954089767
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