1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your wishiot MOC 6 Speed Gearbox Engine Manual Transmission Model. This kit allows you to construct a functional 6-speed gearbox and control it via an APP using compatible M Motors and AA Battery Boxes (models 8883/8881). Please read this manual carefully before beginning assembly or operation to ensure correct usage and to maximize your experience.
2. Safety Information
⚠ 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.
- This product contains small parts and is not suitable for children under 3 years old due to choking hazards.
- Recommended age for assembly and use is 14+ years.
- Always handle electronic components with care.
- Do not expose battery boxes or motors to water or extreme temperatures.
- Ensure batteries are inserted correctly according to polarity markings.
3. Package Contents
Your package should contain the following:
- 1 Set of MOC Speed Gearbox Bricks Kit (loose parts)
- M Motor (if selected)
- AA Battery Box (if selected)
Please note that the kit consists of loose parts and requires self-assembly. Colors of individual bricks may vary randomly.
4. Specifications
| Feature | Detail |
|---|---|
| Product Name | MOC 6 Speed Gearbox Engine Manual Transmission Model |
| Brand Name | wishiot |
| Material | Plastic |
| Block Size | Small building block (Compatible with Lego) |
| Recommended Age | 14+ years |
| Origin | Mainland China |
| Power Source | Lithium Battery (via AA Battery Box) |
| Control Method | APP Control |
| High-concerned chemical | None |
Approximate Dimensions of Assembled Gearbox:

Image: Assembled gearbox with approximate dimensions (Length 15.1cm, Height 8.5cm, Width 5.6cm).
5. Setup and Assembly
The MOC 6 Speed Gearbox is provided as a loose kit and requires self-assembly. Follow these steps for proper setup:
- Unpack Components: Carefully unbox all parts and verify against the included parts list (if provided).
- Access Assembly Instructions: This kit does not come with traditional paper instructions for assembly. Instead, you must scan the QR code provided on the battery box or in the product packaging to download the official assembly APP or view an assembly video.
- Assemble the Gearbox: Follow the step-by-step instructions provided within the APP or video to construct the 6-speed gearbox model. Pay close attention to gear alignment and connection points.
- Connect Motor and Battery Box: Attach the M Motor to the gearbox as indicated in the assembly guide. Insert AA batteries into the battery box (models 8883 or 8881).
- Power On: Refer to the specific battery box instructions for powering on.
Product Overview:

Image: Main product view showing the assembled 6-speed gearbox with M Motor and battery boxes.

Image: Side view of the assembled 6-speed gearbox.

Image: Front view of the assembled 6-speed gearbox.
Battery Box and APP Control Setup:

Image: Yellow battery box with charging port, On/Off button, and APP QR code. Instructions for motor control are visible.

Image: Grey battery box with charging port, On/Off button, and APP QR code. Instructions for power and rotation control are visible.

Image: M Motor and AA Battery Box (power pack) components.
6. Operating Instructions
Once assembled and powered, you can operate your gearbox model using the dedicated APP.
- Download the APP: Scan the QR code found on your battery box or in the product packaging to download the control APP to your smartphone or tablet.
- Connect to the Battery Box: Follow the APP's instructions to pair your device with the battery box via Bluetooth.
- Power Control (Battery Box):
- Yellow Battery Box: Long press the On/Off button to turn the unit on or off. Press once for motor forward, press again for reverse, press a third time to stop.
- Grey Battery Box: Press twice to turn on the power. Press once to change the direction of rotation. Long press for 3 seconds to turn off power.
- Gear Shifting: Use the manual lever on the gearbox model to shift between the 6 available speeds. The APP may also offer virtual controls for this function, depending on its design.
- Motor Control (APP): Use the APP interface to control the M Motor's speed and direction, which in turn drives the gearbox.
7. Maintenance
- Cleaning: Use a dry, soft cloth to clean the building blocks and electronic components. Do not use water or cleaning solutions.
- Storage: Store the model in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: Remove batteries from the battery box if the model will not be used for an extended period to prevent leakage.
- Inspection: Periodically check for loose connections or damaged parts. Replace any broken components to ensure optimal performance.
8. Troubleshooting
- Problem: Model does not power on or motor does not run.
- Solution:
- Ensure batteries are correctly inserted into the battery box and are not depleted.
- Verify the battery box is switched on according to its specific instructions (e.g., long press, double press).
- Check all connections between the motor, battery box, and gearbox for secure fit.
- Confirm the APP is correctly paired and sending commands.
- Problem: Gears are not shifting smoothly or are stuck.
- Solution:
- Inspect the gearbox assembly for any misaligned or incorrectly placed bricks.
- Ensure all gears are properly meshed and free from obstruction.
- If parts are missing or defective, contact customer support.
- Problem: APP cannot connect to the battery box.
- Solution:
- Ensure Bluetooth is enabled on your device.
- Make sure the battery box is powered on and within range.
- Try restarting both the APP and the battery box.
- Check if the APP requires any specific permissions on your device.
9. User Tips
- Assembly Video: Always refer to the assembly video accessible via the QR code for the most accurate and visual building guide. This is often more helpful than static images.
- Part Verification: Before starting assembly, lay out all parts and compare them to the parts list in the APP or video to ensure no components are missing. If parts are missing or defective, contact the seller immediately.
- Motor Functionality: When testing the motor, listen for a consistent sound. If it makes unusual noises or doesn't turn, recheck power connections and gear alignment.
10. Warranty and Support
For any issues, questions, or support needs regarding your MOC 6 Speed Gearbox Engine Manual Transmission Model, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.