Introduction
Thank you for choosing the COOL KNIGHT Electric Cigarette Rolling Machine. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device. Please read it thoroughly before first use and keep it for future reference.
This portable tobacco injector is designed for grinding and filling tobacco or herbs into cigarette tubes and rolling papers, offering convenience and efficiency.
Product Components
Familiarize yourself with the various parts of your COOL KNIGHT Electric Cigarette Rolling Machine and its accessories.

Image: Overview of the COOL KNIGHT Electric Cigarette Rollers Set, showing the main unit, power adapter, cone loader, cleaning brush, cleaning probe, screwdriver, scraper, and filter screen.
- Main Unit: Contains the grinding hopper, injection tubes, switch, and tighten/loosen switch.
- Grinding Hopper: Where tobacco or herbs are placed for grinding.
- Injection Tubes: Two different sizes (0.8mm and 0.65mm) for various cigarette tube diameters.
- Filter Screen: Located below the injection tubes, designed to filter fine powders.
- Adjustment Button: Rotary button to adjust injection density (Loose/Tight).
- Power Adapter: For connecting the machine to a power source.
- Cone Loader: Tool for injecting material into pre-rolled papers.
- Cleaning Brush: For general cleaning of the machine.
- Cleaning Probe: For clearing blockages in the injection tubes.
- Screwdriver: For maintenance tasks.
- Scraper: For collecting and managing material.
Setup
- Unpack: Carefully remove all components from the packaging.
- Placement: Place the machine on a stable, flat surface. Ensure the 6 non-slip pads on the base provide stability.
- Power Connection: Connect the power adapter to the machine and then plug it into a suitable electrical outlet.
- Initial Cleaning: Before first use, wipe down the grinding hopper and injection area with a dry cloth to remove any manufacturing residue.
Operating Instructions
Follow these steps for efficient use of your electric cigarette rolling machine.

Image: Visual guide showing the four main steps for operating the machine: connecting power and loading tobacco, inserting a cigarette tube, pressing the start switch, and automatic ejection.
- Prepare Material: Ensure your tobacco or herb is dry and free from large stems. Gently pull apart the material to ensure it is loose and not overly compressed.
- Load Hopper: Place the prepared tobacco or herb into the grinding hopper. Do not overfill or push down forcefully, as this can lead to clogging or uneven grinding.
- Insert Cigarette Tube: Select the appropriate injection tube (0.8mm or 0.65mm) for your cigarette paper tube. Insert an empty paper tube onto the nozzle of the injection tube.
- Adjust Density: Use the rotary adjustment button on the side to set the desired injection density. Turn towards "Tight" for a firmer cigarette or "Loose" for a lighter one. Experiment to find your preferred setting.
- Start Injection: Press the start switch. The machine will begin grinding and injecting the material into the cigarette tube.
- Completion: Once the injection is complete, the filled cigarette will fall off automatically. You can pause the process at any time by pressing the switch again.
Using the Cone Loader

Image: The cone loader accessory, demonstrating how it is used to fill pre-rolled papers.
For pre-rolled papers, use the provided cone loader. Place the pre-rolled paper onto the cone loader, then carefully transfer the ground material into the paper. This method allows for precise filling of cone-shaped papers.
Maintenance and Cleaning
Regular cleaning ensures optimal performance and extends the lifespan of your machine.
- After Each Use:
- Unplug the machine from the power outlet.
- Use the cleaning brush to remove any loose tobacco or herb residue from the grinding hopper and injection area.
- Utilize the scraper to collect any fine powders from the filter screen. The filter screen is designed to capture these fine particles.
- Clearing Blockages: If the injection tube becomes clogged, use the cleaning probe to gently clear the obstruction. Do not use excessive force.
- Deep Cleaning: Periodically, use the screwdriver to access and clean internal components if necessary. Refer to the product diagram for component locations.
- Storage: Store the machine in a clean, dry place away from direct sunlight and moisture.
Troubleshooting
If you encounter issues with your machine, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not turn on. | Not plugged in correctly; power adapter issue; machine fault. | Ensure power adapter is securely connected to both the machine and the outlet. Test the outlet with another device. If the issue persists, contact customer support. |
| Tobacco/herb is not grinding or injecting properly. | Material is too wet or too coarse; hopper is overfilled; blockage in injection tube. | Ensure material is dry and properly shredded. Do not overfill the hopper. Use the cleaning probe to clear any blockages in the injection tube. |
| Cigarettes are too loose or too tight. | Density adjustment setting is incorrect. | Adjust the rotary density button (Loose/Tight) to achieve the desired packing. Experiment with small adjustments. |
| Tobacco/herb falls out of the cigarette tube. | Cigarette is packed too loosely; material is too finely ground. | Adjust the density setting to "Tight". Ensure the material is not excessively fine; if it is, try a slightly coarser cut if possible. Holding the tube slightly during filling can help, but avoid holding too tightly. |
| Machine clogs frequently. | Material is too moist or contains stems; machine requires cleaning. | Always use dry, well-prepared material. Perform regular cleaning of the grinding hopper and injection tubes with the provided tools. |
Specifications
- Brand: COOL KNIGHT
- Model: B0BZYL2QJP
- Material: Environmentally friendly materials and high quality stainless steel
- Package Dimensions: 22.81 x 12.7 x 10.49 cm
- Weight: 649 g
- Injection Tube Sizes: 0.8mm and 0.65mm (two different sizes)
- Power Source: Power adapter (included)

Image: Diagram illustrating the dimensions (8.5 inches length, 3.9 inches width, 4.8 inches height) and key features such as the filter screen, adjustment button, grinding chamber, and 8mm & 6.5mm diameter nozzles.
Safety Information
- Keep out of reach of children.
- Do not immerse the main unit in water or any other liquid.
- Use only the provided power adapter.
- Do not operate the machine if the power cord or plug is damaged.
- Avoid touching moving parts during operation.
- Ensure proper ventilation during use.
- This device is intended for grinding and injecting tobacco or legal herbs only.
Warranty and Support
COOL KNIGHT is committed to providing high-quality products and customer satisfaction. While specific warranty details are not provided in this manual, we offer after-sales support for any issues you may encounter.
If you are dissatisfied with the product for any reason or experience any trouble during use, please contact our customer service team. We are dedicated to providing you with the best possible solution.
Please retain your purchase receipt as proof of purchase for any warranty or support claims.