1. Introduction
This manual provides instructions for the assembly, operation, and care of your LEGO Mindstorms Mini Robots Building Set 40413. This set allows you to construct five distinct mini robot models using LEGO bricks. Please read these instructions carefully before beginning assembly to ensure a correct and enjoyable building experience.

Image 1.1: Front view of the LEGO Mindstorms Mini Robots Building Set 40413 packaging, displaying the set's title, piece count (366 pcs), and the five mini robot models that can be built.
2. Product Overview
2.1. Set Contents
The LEGO Mindstorms Mini Robots Building Set 40413 includes 366 LEGO elements designed to construct five unique mini robot models. The set contains various bricks, plates, and specialized pieces necessary for building each model. An instruction booklet is provided within the box to guide the assembly process for each robot.
2.2. Key Features
- Builds five distinct mini robot models.
- Designed for ages 7 and up.
- Promotes creative building and fine motor skills.
- Note: This set consists of static models and does not include electronic components for programming or remote control, unlike larger LEGO Mindstorms sets.

Image 2.1: The five fully assembled mini robot models from the LEGO Mindstorms set 40413, showcasing their unique designs and colors.
3. Assembly Instructions
Follow the step-by-step instructions provided in the included LEGO instruction booklet to assemble each mini robot model. It is recommended to build one model at a time to avoid mixing parts.
- Unpack Components: Carefully open the box and sort the LEGO elements. It may be helpful to organize pieces by color or type.
- Consult Instruction Booklet: Refer to the detailed, pictorial instructions for each specific robot model you wish to build.
- Follow Steps Sequentially: Build each model by following the steps in the booklet precisely. Ensure all pieces are firmly connected.
- Verify Completion: After completing a model, double-check against the images in the instruction booklet to ensure all parts are correctly placed and no pieces are missing.
Keep the instruction booklet in a safe place for future reference or if you wish to disassemble and rebuild different models.
4. Operation
The LEGO Mindstorms Mini Robots Building Set 40413 creates static display models. These robots are designed for imaginative play and display, and they do not feature electronic components for programming, remote control, or autonomous movement. Interaction involves manual manipulation and creative storytelling.
Some models may have movable joints or parts that can be manually adjusted, allowing for various poses or simulated actions. For example, a robot arm might pivot, or wheels might turn when pushed.

Image 4.1: Rear view of the LEGO Mindstorms Mini Robots Building Set 40413 packaging, which displays images of other, more advanced LEGO Mindstorms sets (e.g., 51515) that feature programmable elements. This set (40413) does not include such electronic components.
5. Maintenance
5.1. Cleaning
- To clean LEGO bricks, use a mild soap solution and lukewarm water (not exceeding 40°C / 104°F).
- Gently scrub the bricks with a soft brush or cloth.
- Rinse thoroughly with clear water.
- Air dry at room temperature. Do not use direct heat sources like hair dryers or ovens, as this can damage the plastic.
5.2. Storage
Store your LEGO models and loose bricks in a clean, dry place away from direct sunlight and extreme temperatures to prevent discoloration and warping. Keep small pieces away from young children.
6. Troubleshooting
6.1. Missing Pieces
If you find that a piece is missing from your new set, please contact LEGO Customer Service directly. They can assist with replacement parts.
6.2. Difficulty Assembling
- Review Instructions: Double-check the instruction booklet to ensure all steps have been followed correctly.
- Check Orientation: Verify that pieces are oriented in the correct direction as shown in the diagrams.
- Apply Firm Pressure: LEGO bricks are designed to fit snugly. Ensure pieces are pressed firmly together until they click into place.
6.3. Model Instability
If a model feels unstable, carefully retrace your steps in the instruction booklet to identify any incorrectly placed or missing bricks that might compromise structural integrity.
7. Specifications
| Product Name | LEGO Mindstorms Mini Robots Building Set |
| Model Number | 40413 |
| Brand | LEGO |
| ASIN | B009EB5S3U |
| Number of Pieces | 366 |
| Recommended Age | 7 years and up |
| Product Dimensions | 5.6 x 10.3 x 2.4 inches (packaging) |
| Item Weight | 12 ounces |
8. Safety Information
- Choking Hazard: This set contains small parts and is not suitable for children under 3 years of age.
- Adult Supervision: While designed for ages 7+, adult supervision is recommended, especially during initial assembly.
- Proper Use: Use LEGO bricks as intended for building. Do not put pieces in mouth or nose.
- Storage: Keep all LEGO elements in a designated container to prevent loss and accidental ingestion.
9. Warranty and Support
9.1. LEGO Customer Service
For assistance with missing parts, product inquiries, or general support, please visit the official LEGO website or contact their customer service department. Information regarding warranty policies for LEGO products can also be found on their official website.
Official LEGO Website: www.lego.com/service
9.2. Product Authenticity
Ensure you purchase LEGO products from authorized retailers to guarantee authenticity and eligibility for customer support.