Introduction
Thank you for choosing the JEKCA Crocodile 01S building block set. This manual provides detailed instructions for assembling, maintaining, and troubleshooting your model. The JEKCA Crocodile 01S is a complex and rewarding building experience, designed for enthusiasts aged 14 and above, featuring over 1200 pieces and JEKCA's unique interlocking brick-through system for a sturdy, glue-free construction.
Safety Information
- Small Parts Warning: This product contains small parts and is not suitable for children under 3 years of age due to choking hazards.
- Age Recommendation: Recommended for individuals 14 years and older.
- Keep all components away from pets to prevent accidental ingestion.
What's in the Box
Please verify that all the following components are included in your package:
- Bricks (over 1200 pieces)
- Instruction Manual (this document)
- Pin Driver
- Pins
- Quick Guide
Assembly Instructions
The JEKCA Crocodile 01S utilizes a patented interlocking brick-through system, ensuring a strong and stable model without the need for glue. Follow the steps below and refer to the included Quick Guide for visual assistance.
General Assembly Process:
- Identify Pieces: Sort your bricks by color and shape as indicated in the Quick Guide.
- Connect Bricks: Place two bricks together, aligning their holes.
- Insert Pin: Insert a pin through the aligned holes of the two bricks.
- Secure with Pin Driver: Use the provided pin driver to turn the pin 90 degrees. This locks the bricks securely in place. Ensure the pin is fully turned for maximum stability.
- Follow Manual: Proceed step-by-step according to the detailed diagrams in the included Instruction Manual. Each step will show which bricks to use and where to place them.

Image: Illustration of the JEKCA interlocking system. Step 1 shows inserting a pin (screw) into aligned bricks. Step 2 shows turning the pin 90 degrees with a driver to secure the connection, highlighting the simplicity, aesthetic, and sturdiness of the build.

Image: A circular diagram showing three steps for connecting JEKCA bricks. Step 1 illustrates aligning two bricks. Step 2 shows inserting two pins into the aligned bricks. Step 3 depicts using the pin driver to turn the pins 90 degrees for a secure lock.
Finished Product Overview:

Image: The fully assembled JEKCA Crocodile 01S model, a grey and yellow crocodile made of building blocks. Dimensions are indicated: 45cm length, 21.3cm width, and 13.8cm height.
Maintenance
To keep your JEKCA Crocodile 01S model in optimal condition:
- Cleaning: Gently wipe the model with a soft, damp cloth to remove dust. Avoid using harsh chemicals or abrasive cleaners.
- Storage: Store the model in a cool, dry place away from direct sunlight to prevent discoloration or material degradation.
- Handling: While sturdy, avoid excessive force or dropping the model to prevent pieces from detaching.
Troubleshooting
- Difficulty Connecting Bricks: Ensure the pins are fully inserted and turned 90 degrees with the pin driver. If a brick seems stuck, gently wiggle it while applying pressure.
- Missing Pieces: In the rare event of missing components, please contact JEKCA customer support with your product model number and details of the missing parts.
- Loose Connections: If a section feels loose, check that all pins in that area are correctly inserted and fully turned. Re-tighten with the pin driver if necessary.
Specifications
| Feature | Detail |
|---|---|
| Brand Name | JEKCA |
| Model Name | ST19RT01 |
| Subject Character | Crocodile |
| Number of Pieces | Over 1200 |
| Material Type | Plastic |
| Item Dimensions (L x W x H) | 17.72 x 8.39 x 5.43 inches (45 x 21.3 x 13.8 cm) |
| Item Weight | 1.3 Kilograms |
| Recommended Age | 14 years and above |
| Assembly Required | Yes |
| Special Features | Patented Interlocking Brick-through System, Sturdy without glue |
Warranty and Support
For any inquiries regarding your JEKCA Crocodile 01S building block set, including warranty information or assistance with missing parts, please contact JEKCA customer support directly. You can find more information and contact details on the official JEKCA store page: JEKCA Store.