Introduction
This instruction manual provides detailed guidance for the assembly, operation, maintenance, and troubleshooting of your MOC-204276 "The Mystery Shack" modular building block set. This set is designed for enthusiasts aged 14 and above, offering a creative and educational DIY building experience with 3874 pieces of eco-friendly ABS plastic.
Important Note: This product does not include minifigures, printed parts, stickers, or lighting elements. Any printed parts shown in diagrams are replaced by normal, unprinted parts in the actual set.
Setup and Assembly
Your "The Mystery Shack" building block set comes with all necessary building blocks and a PDF assembly instruction guide. Please ensure you have access to the PDF instructions for a smooth assembly process.
Preparation:
- Unpack all components carefully.
- Organize the building blocks by color and shape to facilitate easier assembly.
- Ensure you have a clean, flat, and well-lit workspace.
- Access the provided PDF assembly instructions. If you have not received them, please contact customer support at KH2509026@163.com.
Assembly Process:
- Follow the step-by-step instructions provided in the PDF guide.
- Pay close attention to the diagrams and part counts for each step.
- Connect blocks firmly to ensure structural stability.
- If you encounter any difficulties or missing parts during assembly, refer to the Troubleshooting section.

Figure 1: Front view of the assembled Mystery Shack model.

Figure 2: Rear view of the assembled Mystery Shack model.
Operating the Model
Once assembled, "The Mystery Shack" model is primarily intended for display and gentle interactive play. It is a static model and does not feature electronic components or moving parts beyond what is inherent in its construction.
- Place the model on a stable, flat surface to prevent accidental falls.
- Handle the model with care to avoid dislodging blocks.
- The modular design allows for potential integration with other compatible building block sets, offering expanded creative possibilities.
Maintenance
Proper care will ensure the longevity and appearance of your building block model.
Cleaning:
- Use a soft, dry cloth or a soft-bristled brush to gently remove dust from the model.
- For more stubborn dirt, lightly dampen a cloth with water (no harsh chemicals) and wipe the affected areas. Ensure the model is completely dry before storing or displaying.
- Avoid submerging the model in water.
Storage:
- Store the model in a cool, dry place away from direct sunlight to prevent discoloration or material degradation.
- If disassembling for storage, keep all parts organized in sealed containers to prevent loss.
Troubleshooting
Missing or Damaged Parts:
All parts are quality checked before shipping. However, if you find any missing or damaged parts upon receipt or during assembly:
- Please contact our customer service immediately.
- Provide details of the missing or damaged parts.
- We will send you replacement parts free of charge.
Assembly Difficulties:
- Double-check the PDF assembly instructions for the specific step.
- Ensure you are using the correct parts and orientation.
- If a step remains unclear, consider reviewing previous steps or contacting customer support for clarification.
Specifications
| Feature | Detail |
|---|---|
| Product Name | The Mystery Shack |
| Model Number | MOC-204276 |
| Brand | MOC |
| Material | Eco-friendly ABS plastic |
| Block Type | Small building block (Compatible with Lego) |
| Plastic Block Shape | Self-Locking Bricks |
| Number of Parts | 3874 |
| Recommended Age | 14+ years |
| Gender | Unisex |
| Theme | MOC Modern Buildings, Famous Buildings, Modular Street View |
| Classification | Assemblage |
| Warning | No minifigures, no stickers |
| Is Electric | No Battery |
| Origin | Mainland China |
| Package Weight | 4.0 kg |
| Package Dimensions | 20cm (Length) x 20cm (Width) x 20cm (Height) |
⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Warranty and Support
Your satisfaction is important to us. We ensure all parts are quality checked before shipping.
Customer Support:
- For any issues or questions regarding your product, please contact us immediately. We aim to provide a response within 24 hours.
- If you require replacement parts due to missing or damaged components, please reach out to us. Replacements will be sent free of charge.
- For inquiries related to customized products or to send parts lists and instructions for custom orders, please email: KH2509026@163.com.
User Tips
- Organize Parts: Before starting assembly, sort blocks by color and type. This significantly speeds up the building process.
- Work in Sections: Tackle the build in smaller, manageable sections as outlined in the instructions.
- Check Connections: Ensure all blocks are firmly pressed together to create a stable and durable model.
- Display Safely: Choose a display location that is out of direct sunlight and away from high-traffic areas to prevent accidental damage or fading.
- Keep Instructions Handy: Retain the PDF instructions for future reference, especially if you plan to disassemble or modify the model.




