Introduction
This instruction manual provides detailed guidance for assembling your JEKCA Chihuahua 01S-M03 building block model. This kit is designed for individuals aged 14 and above, offering a rewarding construction experience with over 730 pieces. Please read all instructions carefully before beginning assembly to ensure a successful and sturdy build.

Image: The fully assembled JEKCA Chihuahua 01S-M03 model, showcasing its detailed structure and overall dimensions of Length: 22.5cm, Width: 7.5cm, Height: 22.9cm.
Safety Information
WARNING: Small parts are included in this kit. Not suitable for children under 14 years of age due to choking hazards. Adult supervision is recommended for younger builders within the recommended age range.
Package Contents
Before starting assembly, please verify that all components listed below are present in your package:
- Instruction Manual (this document)
- Building Bricks (various shapes and sizes)
- Connecting Pins
- Pin Driver Tool
- Quick Guide
Assembly Instructions
The JEKCA building system utilizes a patented interlocking brick-through system, ensuring a sturdy and durable model once assembled. Follow the steps outlined in the included detailed building manual and refer to the diagrams below for the core connection method.
Understanding the Interlocking System
Each JEKCA brick is designed to connect securely using small pins and a specialized pin driver tool. This method creates a robust structure that is less prone to accidental disassembly compared to traditional building blocks.

Image: A diagram illustrating the two-step process for securing JEKCA blocks: 1. Insert the pin into the designated hole. 2. Use the pin driver tool to turn the pin 90 degrees, locking the blocks together.
General Assembly Steps
- Review the Manual: Carefully examine the provided detailed building manual. It contains step-by-step diagrams specific to the Chihuahua 01S-M03 model.
- Sort Pieces: Organize your bricks by color and shape as indicated in the manual. This will streamline the building process.
- Connect Blocks: As shown in the manual, place the appropriate bricks together. Ensure the holes align for pin insertion.
- Insert and Secure Pins: Use the provided pin driver tool to insert the connecting pins through the aligned holes. Turn the pin 90 degrees to lock the connection. Refer to the detailed diagram below for visual guidance.
- Verify Connections: After each section, gently test the connections to ensure they are firm and secure.
- Continue Building: Follow the manual's sequence until the model is complete.

Image: A three-step visual guide demonstrating the block connection process: 1. Align two blocks. 2. Insert two pins into the aligned holes. 3. Use the pin driver to turn the pins 90 degrees, securing the connection.
Maintenance
To maintain the appearance and integrity of your JEKCA Chihuahua model:
- Cleaning: Dust the model regularly with a soft, dry cloth or a soft brush. For deeper cleaning, use a slightly damp cloth with mild soap and water, then wipe dry immediately. Avoid harsh chemicals or abrasive cleaners.
- Storage: Store the model in a stable location away from direct sunlight and extreme temperatures to prevent material degradation or discoloration.
- Handling: While the interlocking system provides a sturdy build, avoid dropping or applying excessive force to the model to prevent damage.
Troubleshooting
- Difficulty Connecting Blocks: Ensure the pins are correctly aligned with the holes. Apply firm, even pressure when inserting pins. If a pin is bent, replace it with a new one if available.
- Loose Connections: Verify that all pins have been turned 90 degrees using the pin driver tool. If a section feels loose, carefully disassemble and re-secure the connections.
- Missing Pieces: Double-check all packaging materials. If pieces are genuinely missing, please contact JEKCA customer support with your product model number and details of the missing components.
- Model Instability: Review the assembly steps in the manual to ensure no steps were missed or incorrectly performed. The interlocking system is designed for stability, so instability usually indicates an assembly error.
Specifications
| Feature | Detail |
|---|---|
| Model Number | ST19PT21-M03 |
| Product Dimensions (L x W x H) | 8.86 x 2.95 x 9.02 inches (22.5 x 7.5 x 22.9 cm) |
| Item Weight | 1.61 pounds (0.73 kg) |
| Number of Pieces | >730 pieces |
| Recommended Age | 14 years and up |
| Manufacturer | JEKCA Limited |
Warranty and Support
For any questions, concerns, or to report missing parts, please contact JEKCA customer support. Refer to the contact information provided on the product packaging or the official JEKCA website for assistance. Please have your model number (ST19PT21-M03) ready when contacting support.

