1. Introduction and Overview
This manual provides detailed instructions for the assembly, operation, and maintenance of your Mould King 10210 V12 Engine Model Kit. This kit allows you to build a functional V12 engine replica, offering an engaging STEM experience for adults and enthusiasts aged 14 and up. The assembled model simulates the working principles of a real engine, complete with piston movement and adjustable speeds.

Image 1.1: The fully assembled Mould King 10210 V12 Engine Model Kit, showcasing its intricate design and realistic appearance on a workbench.
2. Safety Information
- Small Parts Warning: This kit contains small parts which may pose a choking hazard. Keep out of reach of children under 3 years of age.
- Recommended Age: This product is recommended for individuals 14 years and older.
- Battery Safety: The battery box requires 6 AA batteries (not included). Ensure correct polarity when inserting batteries. Do not mix old and new batteries, or different types of batteries. Remove batteries if the model will not be used for an extended period.
- Assembly Environment: Assemble the model in a well-lit, organized area to prevent loss of small components.
3. Package Contents
Your Mould King 10210 V12 Engine Model Kit package includes the following components:
- 1366 Pcs building blocks
- 1 x L motor
- 1 x Battery box (requires 6 AA batteries, not included)
- 1 x Instruction Guide
All parts are individually packaged to facilitate easier identification and assembly. Please verify all components are present before beginning assembly.
4. Setup and Assembly
Follow the included Instruction Guide carefully for step-by-step assembly. The guide provides detailed diagrams and instructions to help you construct the V12 engine model.
- Unpack Components: Open the individually packaged bags containing the building blocks. It is recommended to sort pieces by type or color as you go, if desired, to streamline the process.
- Follow Instructions: Refer to the Instruction Guide for the precise sequence of steps. Each step is designed to build the engine logically, ensuring all mechanical connections are correctly made.
- Motor and Battery Box Integration: The Instruction Guide will detail when and how to integrate the L motor and battery box into the engine structure. Ensure all connections are secure.

Image 4.1: A person engaged in the assembly of the Mould King V12 Engine Model Kit, demonstrating the hands-on building process.
5. Operating Instructions
Once assembled, your Mould King V12 Engine Model Kit can simulate the operation of a real engine with adjustable speeds.
- Install Batteries: Open the battery compartment on the battery box and insert 6 AA batteries, observing the correct polarity (+/-). Close the compartment securely.
- Power On: Locate the power switch on the battery box. Flip the switch to the 'ON' position to activate the L motor. The engine's internal components, including pistons and fan, will begin to move.
- Adjust Speed: The model features a speed adjustment function. Use the gear lever to select one of four working speeds: Low Speed, Medium Speed, High Speed, and Rapid Speed. This simulates the gear shifting action of a car.
- Power Off: To stop the engine, flip the power switch on the battery box to the 'OFF' position.

Image 5.1: A detailed view of the battery switch and the rotating fan, indicating the direction of motor rotation.

Image 5.2: A close-up of the gear shifting mechanism, illustrating the four distinct speed modes: Low, Medium, High, and Hyper Speed.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your model kit.
- Cleaning: Dust the model regularly with a soft, dry cloth or a soft brush to prevent dust accumulation in moving parts. Do not use water or chemical cleaners.
- Battery Replacement: Replace all 6 AA batteries when the motor's speed decreases or stops functioning. Always replace all batteries at once with new ones.
- Storage: Store the model in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries from the battery box.
7. Troubleshooting
If you encounter issues with your Mould King V12 Engine Model Kit, refer to the following common solutions:
- Motor Not Working:
- Check if the batteries are correctly installed with the right polarity.
- Ensure the batteries are fresh and have sufficient charge. Replace if necessary.
- Verify that the power switch on the battery box is in the 'ON' position.
- Confirm all connections between the L motor and the battery box are secure.
- Parts Missing During Assembly: If you find any parts missing during the building process, please contact Mould King customer support for assistance.
- Engine Movement is Sluggish: This typically indicates low battery power. Replace the AA batteries.
8. Specifications
| Model Number | WX10210SZUS |
| Number of Pieces | 1366 |
| Assembled Dimensions (Approx.) | 38 cm (14.9 in) Length x 17.2 cm (6.7 in) Height x 18 cm (7.1 in) Width |
| Package Dimensions | 11.8 x 8.66 x 3.94 inches |
| Item Weight | 2.99 pounds |
| Material | Plastic |
| Power Source | L motor, Battery box (requires 6 AA batteries, not included) |
| Recommended Age | 14 years and up |

Image 8.1: Diagram illustrating the approximate dimensions of the assembled Mould King 10210 V12 Engine Model Kit.
9. Warranty and Support
Mould King is committed to providing quality products. If you encounter any issues, such as missing parts or functional problems during the building process or operation, please contact Mould King customer support. We will endeavor to assist you in resolving any concerns.





