1. Introduction
Thank you for choosing the CSNRHG Mechanical Skull Building Block Set, Model 13089. This set contains over 1099 precision-molded pieces, allowing you to construct a detailed and poseable mechanical skull model with a functional mandibular teeth bite drive. This manual provides essential information for assembly, operation, maintenance, and troubleshooting to ensure a rewarding building experience.
2. Safety Information
WARNING: CHOKING HAZARD—Small parts. Not for children under 3 years.
Please keep all small parts away from young children to prevent accidental ingestion. Adult supervision is recommended during assembly, especially for younger builders.
3. Setup and Assembly
The CSNRHG Mechanical Skull Building Block Set requires careful assembly. Follow the step-by-step instructions provided in the physical instruction manual included in your package. Organize your pieces before starting to facilitate the building process.
- Step 1: Unpack and Sort
Carefully open the packaging and sort all building blocks by color and type. This will significantly aid in locating the correct pieces during assembly. - Step 2: Follow the Manual
Refer to the detailed, illustrated instruction manual provided with your set. Each step is designed to guide you through the construction of the mechanical skull. - Step 3: Construct the Base
Begin by assembling the base structure, ensuring all connections are secure. - Step 4: Build the Skull Structure
Proceed to build the main skull components, paying close attention to the internal mechanical elements. - Step 5: Integrate Mechanical Features
Install the gears, levers, and other components that enable the mandibular teeth bite drive and rotating parts. Ensure all moving parts are correctly aligned for smooth operation. - Step 6: Add Lighting Elements
Carefully place the light components as indicated in the manual. - Step 7: Final Touches
Attach any remaining decorative pieces and ensure the entire model is stable and all connections are firm.

Image 3.1: Overview of the CSNRHG Mechanical Skeleton Building Block Set.

Image 3.2: Detailed view of the mechanical skull highlighting rotating parts and integrated lights.
4. Operating Instructions
Once assembled, your CSNRHG Mechanical Skull offers interactive features:
- Mandibular Teeth Bite Drive: Locate the handle or mechanism designed to operate the jaw. Turning this handle will activate the mandibular teeth, allowing the skull to open and close its mouth.
- Integrated Lights: The skull features integrated lights. Identify the switch or button to turn these lights on and off.
- Rotating Parts: Observe the various gears and mechanical components that rotate when the jaw mechanism is engaged, showcasing the intricate design.

Image 4.1: Illustration of turning the handle to operate the skull's jaw mechanism.

Image 4.2: The mechanical skull displaying its two illuminated side lights.
Video 4.1: A demonstration of the CSNRHG Mechanical Skull's features, including the movable jaw and illuminated elements.
5. Maintenance
- Cleaning: To clean the model, gently wipe with a dry, soft cloth. Avoid using harsh chemicals or abrasive materials, which can damage the plastic.
- Storage: Store the assembled model in a cool, dry place away from direct sunlight to prevent discoloration or warping of the plastic components.
- Handling: Handle the model with care, especially the moving parts, to avoid accidental breakage.
6. Troubleshooting
- Missing Pieces: If you find any pieces missing during assembly, please contact CSNRHG customer support with details of the missing parts.
- Difficulty Assembling: If you encounter difficulty connecting pieces, ensure you are using the correct parts as indicated in the manual. Apply gentle, firm pressure. Avoid forcing pieces together, which can cause damage.
- Mechanical Parts Not Moving Smoothly: Check that all gears and connecting rods are correctly aligned and free from obstruction. Ensure no pieces are pressing against moving components.
7. Specifications
| Feature | Detail |
|---|---|
| Brand Name | CSNRHG |
| Model Name | 13089 |
| Model Number | 13089 |
| UPC | 793898911502 |
| Material Type | Plastic |
| Number of Pieces | 1099+ |
| Item Dimensions (L x W x H) | 6.1 x 9.25 x 7.28 inches |
| Recommended Age | 12 years and up |
| Educational Objective | Creative Thinking |
| Operation Mode | Manual |

Image 7.1: Product dimensions of the assembled mechanical skull.
8. Warranty and Support
For any inquiries regarding missing parts, assembly assistance, or product support, please contact the manufacturer, Jieyang Cansen Trading Co., Ltd., or the retailer from whom you purchased the product. Please retain your proof of purchase for any warranty claims.