Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your ROBOTIME LK505 1:18 Scale Wooden Formula Racing Car 3D Puzzle. Please read all instructions carefully before beginning assembly to ensure a smooth and enjoyable building experience.

Figure 1: The ROBOTIME LK505 Wooden Formula Racing Car and its packaging.
Package Contents
Before starting assembly, verify that all components are present in your package. The ROBOTIME LK505 kit includes:
- Laser Cut Wooden Pieces (247 parts)
- Instruction Book
- Additional small components (e.g., silicone wheels, clockwork mechanism, screws, screwdriver)

Figure 2: Unpacked components of the LK505 kit, showing wooden sheets, manual, and accessories.
Assembly Instructions
Assembly of the ROBOTIME LK505 model typically takes approximately 3.5 hours. Follow the step-by-step instructions provided in the included instruction book. Pay close attention to diagrams and part numbers.
General Tips for Assembly:
- Handle with Care: Wooden pieces, especially thin ones, can be fragile. Gently detach them from the sheets.
- Organize Parts: Before starting, sort the laser-cut pieces by their designated numbers or shapes to facilitate easier identification.
- Read Ahead: Review the next few steps in the instruction manual before proceeding to understand the overall assembly flow and avoid errors.
- Smooth Edges: If any pieces have rough edges after detaching, gently sand them with fine-grit sandpaper (not included) for a better fit.
- Secure Connections: Ensure all connections are firm but avoid excessive force, which could damage the wood.

Figure 3: A builder carefully assembling a section of the LK505 model.
Key Assembly Areas:
- Chassis and Frame: Begin by constructing the main chassis, which forms the foundation of the racing car.
- Engine and Gearbox: Assemble the clockwork energy storage box and micro gearbox. This mechanism is crucial for the car's movement.
- Wheel Assembly: Attach the wear-resistant silicone wheels to the axles. Ensure they rotate freely.
- Bodywork and Aerodynamics: Complete the exterior body panels, including the arrow-shaped front wing and rear spoiler.

Figure 4: Detail of wheel assembly, showing the wooden rim and silicone tire.
Operating Instructions
The ROBOTIME LK505 racing car is powered by a clockwork mechanism. To operate the car:
- Winding the Mechanism: Locate the winding key at the rear of the car. Turn the key clockwise to wind the internal spring. The mechanism can typically handle up to 5 full winds.
- Activating Movement: Once wound, place the car on a flat, smooth surface. The car is propelled by gears transmitting power from the clockwork.
- Release Mechanism: Some models may feature a release lever or button. Ensure this is disengaged to allow the car to move. For this model, the driver's helmet acts as a start switch. Snap the driver's helmet back sharply to engage the drive.

Figure 5: Winding the rear-mounted clockwork mechanism.

Figure 6: Activating the car's movement by pressing the driver's helmet.
The car is designed to travel approximately 6-8 meters on a single wind.
Maintenance
To ensure the longevity and proper function of your ROBOTIME LK505 model:
- Cleaning: Dust the model regularly with a soft, dry cloth. Avoid using water or chemical cleaners, which can damage the wood.
- Storage: Store the model in a dry environment, away from direct sunlight and extreme temperature fluctuations, to prevent warping or damage to the wood.
- Lubrication (Optional): For smoother operation of the clockwork mechanism and gears, a small amount of airsoft silicone oil can be applied to moving parts. Apply sparingly and wipe away any excess.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Car does not move or moves slowly. |
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| Parts are difficult to fit together. |
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| A small part broke during assembly. |
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Specifications
| Feature | Detail |
|---|---|
| Model Number | RBT-LK505 |
| Scale | 1:18 |
| Material | High-quality Plywood |
| Number of Pieces | 247 |
| Assembled Length | 11.4 inches (29.5 cm) |
| Assembled Width | 4.1 inches (11.2 cm) |
| Assembled Height | 2.9 inches (7.6 cm) |
| Item Weight | 1.65 pounds |
| Recommended Age | 14 years and up |
| Power Source | Clockwork energy storage box and micro gearbox |
| Travel Distance | Up to 6-8 meters |

Figure 7: Assembled dimensions of the LK505 model.
Warranty and Support
ROBOTIME offers worry-free assembly support for your 3D Puzzle. If you encounter any problems during assembly or have questions about your product, please feel free to contact ROBOTIME customer service.
For assistance, please refer to the contact information provided in your product packaging or visit the official ROBOTIME website.







