Introduction
This manual provides essential information for the assembly, operation, and maintenance of your KOTARBAU Sandbox with Cover (Model ZSY3940k). Please read these instructions carefully before assembly and use to ensure safe and correct operation.
1. Setup Instructions
The KOTARBAU sandbox is designed for simple assembly with pre-drilled holes, requiring minimal time.
1.1 Package Contents
- Foldable sandbox with benches and adjustable roof
- Protective tarp
- Insulating ground sheet
- Screws and hinges
- Assembly instructions
1.2 Assembly Steps
- Prepare the Area: Choose a flat, stable outdoor surface for the sandbox. Ensure adequate space around the sandbox for safe play.
- Unpack Components: Carefully remove all parts from the packaging and verify against the package contents list.
- Assemble the Base: Follow the provided diagrams to connect the wooden panels for the sandbox base using the screws and hinges. The pre-drilled holes facilitate this process.
- Install Benches: Attach the foldable benches to the sides of the sandbox. Ensure hinges are securely fastened to allow for smooth folding.
- Attach Roof Supports: Secure the vertical supports for the adjustable roof to the sandbox structure.
- Mount the Roof: Attach the yellow roof canopy to the adjustable mechanism on the supports. Test the adjustment function to ensure it moves freely.
- Place Ground Sheet: Lay the insulating ground sheet inside the sandbox area before adding sand. This prevents sand from mixing with soil and inhibits plant growth.
- Fill with Sand: Fill the sandbox with approximately 180 kg of play sand.


2. Operating Instructions
The KOTARBAU sandbox is designed for safe and practical use, offering features for both play and protection.
2.1 Using the Foldable Benches
The sandbox features two integrated foldable benches. These benches provide seating for children during play. When folded inwards, they serve as a protective cover for the sand, shielding it from dirt, leaves, and animals. Ensure the benches are fully folded and secured when not in use to protect the sand.
2.2 Adjusting the Roof
The sandbox is equipped with an adjustable roof. This roof can be raised to provide shade from the sun or lowered to offer protection from rain. Adjust the roof to the desired height and angle using the adjustment mechanism. Ensure the roof is securely positioned after adjustment.


3. Maintenance
Proper maintenance ensures the longevity and safety of your KOTARBAU sandbox.
- Wood Care: The sandbox is made from certified high-quality pine wood, impregnated with an ecological agent compliant with EN71-3 for durability and safety. Regularly inspect the wood for any signs of wear, splinters, or damage. Sand down any rough spots if necessary.
- Sand Protection: Always use the foldable benches as a cover or the provided protective tarp when the sandbox is not in use. This prevents contamination from dirt, leaves, and animals, and keeps the sand clean and dry.
- Ground Sheet: The insulating ground sheet helps maintain sand cleanliness and prevents plant growth from below. Ensure it remains properly positioned.
- Cleaning: Clean the wooden surfaces with a damp cloth. Avoid harsh chemicals that could damage the wood or its impregnation.
- Hardware Check: Periodically check all screws and hinges to ensure they are tight and secure. Tighten if loose.
4. Troubleshooting
This section addresses common issues you might encounter with your sandbox.
4.1 General Issues
- Problem: Benches do not fold smoothly or do not close completely.
Solution: Check hinges for proper alignment and ensure no debris is obstructing their movement. Lubricate hinges if necessary. Verify that all screws are tightened. - Problem: Roof mechanism is stiff or difficult to adjust.
Solution: Inspect the sliding or pivoting parts of the roof mechanism for obstructions. Ensure all fasteners are secure but not overtightened, which could impede movement. - Problem: Sand becomes dirty quickly.
Solution: Ensure the sandbox is consistently covered with the foldable benches or the protective tarp when not in use. Regularly rake and clean the sand to remove debris. - Problem: Wood appears weathered or damaged.
Solution: The wood is impregnated for protection. For minor wear, light sanding may be applied. For significant damage, consider contacting the manufacturer for advice.
If you encounter issues not listed here or require further assistance, please refer to the Support section.
5. Specifications
| Brand | KOTARBAU |
| Model Number | ZSY3940k |
| Product Dimensions (L x W x H) | 120 x 120 x 120 cm |
| Sandbox Dimensions (L x W) | 120 x 120 cm |
| Sandbox Height | 22 cm |
| Height with Bench | 40 cm |
| Board Thickness | 18/20 mm |
| Weight | 30 kg |
| Material | Certified High-Quality Pine Wood |
| Color | Grey (sandbox), Yellow (roof) |
| Recommended Sand Quantity | Approx. 180 kg |
| Maximum Recommended Load | 180 kg |
| Assembly Required | Yes |
| Recommended Age | 18 - 18 months |
| ASIN | B0F5HLNF1K |
| First Available Date | April 21, 2025 |

6. Warranty Information
Specific warranty details for the KOTARBAU Sandbox (Model ZSY3940k) are not provided in the available product data. Please refer to your purchase documentation or contact the retailer for warranty terms and conditions.
7. Support
For further assistance, product inquiries, or to report any issues, please contact KOTARBAU customer service through the retailer where the product was purchased. Contact information for KOTARBAU may also be available on their official website.