1. Introduction
Thank you for purchasing the COBI Robot Trains Kay Circuit Base. This instruction manual provides important information for the safe assembly, operation, and maintenance of your new toy set. Please read this manual thoroughly before use and retain it for future reference.
1.1 Safety Warnings
- WARNING: Not suitable for children under 4 years due to small parts.
- Recommended age: 3 years and up.
- Adult supervision is recommended during assembly and play.
- Keep away from water and excessive heat.
1.2 Package Contents
Ensure all the following components are present in your package:
- 1x Kay Motorized Train Figurine
- 3x Wagons
- Kay's Base Station
- Track Pieces (forming a circuit over 120 cm when assembled)
- Instruction Manual

Image 1.1: Overview of the COBI Robot Trains Kay Circuit Base with Kay train and track layout.
2. Setup and Assembly
Follow these steps to assemble your Kay Circuit Base:
2.1 Track Assembly
- Carefully unpack all track pieces and the base station components.
- Connect the track pieces according to the diagram provided on the packaging or in the detailed assembly guide (if separate). Ensure all connections are secure. The assembled track will form a circuit over 120 cm in length.
- Attach the Kay's Base Station to the designated track sections, ensuring it is stable and securely connected to the track supports.

Image 2.1: Assembly diagram illustrating the track layout and connection points for the Kay Circuit Base.
2.2 Battery Installation
The Kay motorized train requires batteries (not included) for operation and sound/light effects.
- Locate the battery compartment on the underside of the Kay train figurine.
- Using a small screwdriver (not included), open the battery compartment cover.
- Insert the required batteries (e.g., AA or AAA, refer to the compartment markings for correct type and polarity).
- Replace the battery compartment cover and secure it with the screw.
3. Operating Instructions
Once assembled and batteries are installed, you can begin playing with your Kay Circuit Base.
3.1 Starting the Train
- Place the Kay motorized train, connected to its 3 wagons, onto the track within the base station.
- Ensure the train is properly seated on the rails.
- Activate the train by pressing the designated button (usually located on the train or the base station, refer to visual cues).
- The base station door will open, and Kay will automatically launch onto the rails, initiating its journey with sound and light effects.

Image 3.1: Kay train positioned within the base station, ready for launch.
3.2 Features
- Automatic Launch: Kay automatically starts moving on the tracks when the base station door opens.
- Sound and Light Effects: The train features integrated sound and light effects to enhance playtime.
- Compatibility: This circuit base is compatible with other Robot Trains mini-vehicles and play sets, allowing for expansion of your train world.
4. Maintenance
Proper care will ensure the longevity of your Kay Circuit Base.
4.1 Cleaning
- Wipe the train and track pieces with a soft, dry cloth.
- Do not use harsh chemicals or abrasive cleaners.
- Avoid submerging any electronic components in water.
4.2 Battery Care
- Remove batteries if the toy will not be used for an extended period to prevent leakage.
- Dispose of used batteries responsibly according to local regulations.
- Do not mix old and new batteries, or different types of batteries.
5. Troubleshooting
If you encounter any issues, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Train does not move or moves slowly. | Low or dead batteries. Incorrect battery installation. Track connections are loose. | Replace batteries with fresh ones. Ensure batteries are inserted with correct polarity. Check all track connections for tightness. |
| Sound or light effects are not working. | Low or dead batteries. | Replace batteries with fresh ones. |
| Train derails frequently. | Track not assembled correctly. Obstruction on the track. | Re-check all track connections and ensure they are flat and secure. Remove any debris from the track. |
6. Specifications
| Brand | COBI |
| Model Name | Circuit Base De Kay |
| Manufacturer Reference | 80170 |
| Material | Plastic |
| Power Source | Battery Powered (Batteries not included) |
| Recommended Age | 36 months - 5 years (or from 3 years) |
| Educational Value | Promotes fine motor skills, coordination, and creative play activity |
| Product Dimensions (L x W x H) | Approx. 10 x 10 x 10 mm (item dimensions); 1 x 1 x 1 cm (product dimensions); 1 kilogram (weight) |
| Color | Multicolor |
7. Warranty and Support
Specific warranty information for the COBI Robot Trains Kay Circuit Base is not available in this document. For warranty details, product support, or to inquire about spare parts, please contact the manufacturer directly using the contact information provided on the product packaging or their official website.