Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your Aetheria SEMTO ST-NF2 DIY Mini Metal Engine. This L2 Inline 2-Cylinder engine model kit offers an engaging experience for understanding mechanical principles. Please read this manual thoroughly before beginning assembly or operation to ensure proper use and longevity of the product.
What's in the Box
Your Aetheria SEMTO ST-NF2 engine kit includes the following components:
- 1x Engine Model Kit (unassembled)
- 1x Fuel Tank
- 1x Oil Pipe
- 1x Brush Start Ignition Power Module
- 2x F-Type Electric Plugs
- 1x Instruction Manual (paper version)

Image: All components included in the Aetheria SEMTO ST-NF2 DIY Mini Metal Engine kit.
Specifications
| Material | Metal |
| Brand | SEMTO ENGINE |
| Model | ST-NF2 |
| Form | Kit Version (unassembled) |
| Product Dimensions | 11.2 x 9 x 9.2 cm |
| Product Weight | 535g |
| Recommended Age | 14+ |

Image: Technical specifications and dimensions of the SEMTO ST-NF2 engine model.

Image: Visual representation of the engine's dimensions.
Assembly
The Aetheria SEMTO ST-NF2 engine is a DIY assembly kit. Follow the included paper instruction manual for step-by-step guidance. The assembly process allows you to explore the internal structure and mechanical operation of the engine.
- Step 1: Unpack Components
Carefully remove all parts from the packaging. Organize them to match the instructions. - Step 2: Follow Illustrated Instructions
The provided manual contains detailed diagrams and sequential steps. Ensure each part is correctly identified and placed. - Step 3: Connect Electrical Components
Integrate the F-Type Electric Plugs and the Brush Start Ignition Power Module as instructed. - Step 4: Install Fuel System
Attach the fuel tank and oil pipe according to the diagrams.

Image: Organized components of the engine kit, facilitating the assembly process.

Image: Close-up of engine parts arranged in foam packaging.
Video: A demonstration of the T-NF2 DIY Mini Metal Engine, showcasing its features and operation after assembly.
Operating Instructions
Once assembled, the SEMTO ST-NF2 engine can be operated to observe its working principles. Ensure all connections are secure and the fuel tank is filled with appropriate fuel (not included).
- Step 1: Fueling
Carefully fill the fuel tank with the recommended fuel type. - Step 2: Connect Power
Connect the Brush Start Ignition Power Module to a compatible power source (e.g., batteries, not included). - Step 3: Start the Engine
Activate the ignition module to start the engine. The engine will run, allowing you to see the pistons and other moving parts in action. - Step 4: Observe Operation
The transparent design allows for clear observation of the engine's internal mechanisms, demonstrating the L2 engine's working cycle.

Image: The assembled SEMTO ST-NF2 engine, highlighting its functional components.
Video: A demonstration of a mini V8 engine kit running, illustrating the movement of internal components and the engine's sound.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your engine model.
- Cleaning: Use a soft, dry cloth to wipe down the engine model. Avoid using harsh chemicals or abrasive materials that could damage the metal or plastic components.
- Lubrication: Periodically apply a small amount of appropriate lubricant to moving parts, such as gears and shafts, to ensure smooth operation. Refer to the assembly manual for specific lubrication points.
- Storage: When not in use, store the engine model in a cool, dry place away from direct sunlight and excessive dust.
- Battery Care: If using batteries for the ignition module, remove them during long periods of non-use to prevent leakage.
Troubleshooting
If you encounter issues with your Aetheria SEMTO ST-NF2 engine model, refer to the following common problems and solutions:
- Engine does not start:
- Check if the ignition power module is correctly connected and powered.
- Ensure the F-Type Electric Plugs are properly installed.
- Verify that the fuel tank contains sufficient fuel and the oil pipe is not blocked. - Moving parts are stiff or noisy:
- Apply lubricant to the moving gears, belts, and shafts.
- Check for any obstructions or misaligned parts. - Lights are not working:
- Confirm that the power module is functioning and all electrical connections are secure.
If the problem persists after attempting these steps, consult the original paper instruction manual or contact customer support.
Safety Information
Please observe the following safety guidelines to prevent injury and damage to the product:
- This product contains small parts and is not suitable for children under 14 years of age without adult supervision.
- Keep hands and loose clothing away from moving parts during operation.
- Use only the specified fuel type for the engine. Improper fuel can cause damage or fire.
- Do not modify the engine or its components. Unauthorized modifications may void the warranty and create safety hazards.
- Ensure adequate ventilation when operating the engine, especially if using fuel that produces fumes.
Warranty and Support
For warranty information and customer support, please refer to the documentation included in your product packaging or visit the Aetheria official website. Keep your proof of purchase for any warranty claims.