1. Introduction
This instruction manual provides detailed guidance for the assembly, operation, and maintenance of your JMBricklayer Train Set 51109 EMD SD40-2 Diesel Locomotive building kit. This set is designed for adults and features a realistic EMD SD40-2 diesel locomotive, a cargo crane, and train tracks. Please read all instructions carefully before beginning assembly or operation.
2. Package Contents
Verify that all components are present before starting assembly. The JMBricklayer Train Set 51109 includes:
- 1170 high-quality building blocks
- 1 remote control
- 1 RWY power module with a rechargeable 3.7V 100mAh lithium battery
- Train tracks
- 1 diesel locomotive with detachable or connectable carriages
- 1 adjustable and movable crane
- Detailed assembly instructions booklet

Figure 2.1: Overview of the JMBricklayer Train Set 51109 components and dimensions.
3. Assembly Instructions
Assembly of the JMBricklayer Train Set 51109 is estimated to take approximately 2 days. Follow the included step-by-step instruction booklet for detailed guidance. Ensure each block is firmly connected to prevent instability.
3.1. General Assembly Tips
- Organize blocks by color and shape before starting.
- Carefully follow the sequence provided in the instruction booklet.
- Ensure all connections are secure to maintain the structural integrity of the model.
- Refer to the detailed feature images for clarity on specific connections.

Figure 3.1: Detailed views of key assembly points, including the locomotive cab, carriage connection, and crane mechanism.

Figure 3.2: Example of the assembly process, highlighting the detailed construction.
4. Operating Instructions
The JMBricklayer Train Set 51109 is equipped with an RWY power module for motorized operation. It can be controlled via the included remote control or a dedicated phone application using Bluetooth connectivity.
4.1. Battery Charging
- The RWY power module contains a rechargeable 3.7V 100mAh lithium battery.
- Connect the power module to a suitable USB power source using the provided charging cable.
- Charging typically takes approximately 1 hour.
- A full charge provides 4–6 minutes of continuous operation.
4.2. Control Methods
- Remote Control: Use the included remote control to operate the train's movement and other functions. Refer to the remote control's specific instructions for button layout and functions.
- App Control: Download the JMBricklayer control application on your smartphone. Enable Bluetooth on your device and pair it with the train's power module. The app provides intuitive controls for movement and features.

Figure 4.1: The train can be controlled using either the physical remote or a smartphone application.
4.3. Train Operation
- Place the assembled train on the tracks.
- Ensure the power module is switched on and connected to the control device (remote or app).
- Use the controls to move the train forward or backward along the tracks.
- The crane is adjustable and movable, allowing for interactive play with the cargo carriage.
- Carriages can be detached or connected as desired.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your train set.
- Cleaning: Dust the building blocks regularly with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the train set in a cool, dry place away from direct sunlight and extreme temperatures to prevent material degradation.
- Battery Care: Do not overcharge the lithium battery. If storing for extended periods, charge the battery to approximately 50% capacity and recharge every few months to maintain battery health.
- Connections: Periodically check all block connections to ensure they remain firm. Re-attach any loose pieces.
6. Troubleshooting
If you encounter any issues with your JMBricklayer Train Set 51109, refer to the following common solutions:
- Train Not Moving:
- Ensure the power module is fully charged and switched on.
- Verify that the remote control or app is properly paired via Bluetooth.
- Check that the train is correctly placed on the tracks and there are no obstructions.
- Blocks Not Staying Together:
- Ensure blocks are pressed firmly into place during assembly.
- Review the instruction manual to confirm correct block placement.
- Missing Parts:
- Refer to the Warranty and Support section for instructions on how to request replacement parts.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 51109 |
| Number of Pieces | 1170 |
| Assembled Dimensions (L x W x H) | 23.90in x 4.17in x 8.66in |
| Material Type | Plastic |
| Power Source | Battery Powered (Rechargeable Lithium-Ion) |
| Battery Capacity | 3.7V 100mAh |
| Charging Time | Approx. 1 hour |
| Operation Time (per charge) | 4–6 minutes |
| Control Type | Remote Control, App Control (Bluetooth) |
| Recommended Age | Adult (Minimum 12 years) |
| Assembly Time | Approx. 2 days |
8. Safety Information
- Choking Hazard: This product contains small parts and is not suitable for children under 3 years of age. Adult supervision is recommended for younger builders (12+ years).
- Battery Safety: Do not attempt to disassemble or puncture the battery. Dispose of batteries according to local regulations.
- Indoor Use: This train set is designed for indoor use only.
9. Warranty and Support
JMBricklayer strives to ensure every set meets high-quality standards. All products are carefully inspected before leaving the factory.
9.1. Missing Parts
If you find any missing pieces in your set, please contact JMBricklayer customer support. We will send the missing parts to you free of charge.
9.2. Satisfaction Guarantee
We offer a refund if you are not satisfied with your purchase. Please refer to your purchase documentation or the JMBricklayer official website for detailed return and refund policies.

Figure 9.1: JMBricklayer Warranty and Support Information.
9.3. Contact Information
For support, please visit the official JMBricklayer website or refer to the contact details provided with your product packaging.