1. Product Overview
The LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) set allows builders aged 7 and up to construct a detailed monster truck. This model features a unique dual-sided design, showcasing fire and ice themes, and incorporates a pull-back motor for dynamic play. The set consists of 263 pieces, offering an engaging building experience.

The fully assembled LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) monster truck, showcasing its distinctive design.
Key Features:
- Dual-Sided Design: Features authentic Grave Digger details with fire and flames on one side and an icy design on the other.
- Pull-Back Action: Equipped with a pull-back motor to launch the truck into high-speed stunts and tricks.
- Durable Construction: Designed for robust play, allowing for recreation of Monster Jam arena moments.
- Educational Value: Introduces young builders to engineering concepts through realistic movements and mechanisms.
- Interactive Building: Compatible with the LEGO Builder app for digital 3D instructions, progress tracking, and model rotation.

A close-up view of the LEGO Technic Monster Jam Grave Digger Fire and Ice (42219), highlighting the detailed fire and ice graphics on its body.
2. Assembly Instructions
Follow the step-by-step instructions provided in the included building guide. For an enhanced building experience, download the official LEGO Builder app, which offers interactive 3D instructions, allowing you to zoom, rotate, and visualize the model as you build.

A child utilizes the LEGO Builder app on a tablet to follow digital instructions for assembling the Monster Jam Grave Digger Fire and Ice (42219) set.
Building Tips:
- Sort pieces by color and size before starting to simplify the building process.
- Pay close attention to the orientation of Technic pins and connectors.
- Ensure all connections are firm to maintain the structural integrity of the model.
3. Operating Instructions
The LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) features a pull-back motor for exciting action. To operate:
- Place the monster truck on a flat, smooth surface.
- Gently pull the truck backward, allowing the internal mechanism to wind up.
- Release the truck to watch it race forward, performing stunts and tricks.

A visual guide demonstrating how to engage the pull-back mechanism of the LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) for forward motion.
Official video showcasing the assembly and dynamic pull-back action of the LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) set.
A 360-degree view of the LEGO Technic Monster Jam Grave Digger Fire and Ice (42219), highlighting its design from all angles.
4. Maintenance
To ensure the longevity and cleanliness of your LEGO Technic model:
- Cleaning: Use a soft brush or a damp cloth with mild soap to clean dust and dirt from the bricks. Avoid harsh chemicals or abrasive materials.
- Storage: Store the model in a cool, dry place away from direct sunlight to prevent discoloration and material degradation.
- Handling: Handle the model with care, especially when engaging the pull-back mechanism, to prevent damage to the internal components.
5. Troubleshooting
If you encounter any issues with your LEGO Technic Monster Jam Grave Digger Fire and Ice (42219) set, consider the following:
- Missing Pieces: If you find any pieces missing during assembly, please contact LEGO Customer Service for replacements.
- Assembly Difficulties: Double-check the building instructions or refer to the LEGO Builder app to ensure all steps are followed correctly. Sometimes a small misplacement can affect subsequent steps.
- Pull-Back Mechanism Not Working: Ensure that the pull-back motor is correctly installed and that no bricks are obstructing its movement. Verify that the wheels are securely attached and can rotate freely.
- Loose Connections: If parts feel loose, gently press them together to ensure a secure fit. Technic models rely on strong connections for stability.
6. Specifications
| Attribute | Detail |
|---|---|
| Model Number | 42219 |
| Brand | LEGO Technic |
| Piece Count | 263 |
| Recommended Age | 7 years and up |
| Product Dimensions | 10.32 x 7.52 x 2.84 inches (packaging) |
| Assembled Dimensions | Over 4 in. (11 cm) high, 7 in. (18 cm) long and 4 in. (11 cm) wide |
| Item Weight | 1.08 pounds |
7. Warranty and Support
LEGO products are manufactured to high-quality standards. For information regarding warranty, missing parts, or general product support, please visit the official LEGO website or contact their customer service directly.
- Official LEGO Website: www.lego.com
- Customer Service: Refer to the LEGO website for regional contact information.





