1. Introduction
This instruction manual provides guidance for assembling and understanding the COBI 3104 Patton M48 building blocks set. This set allows you to construct a detailed 1:72 scale model of the M48 Patton tank, an iconic American medium tank from the Cold War era. The model consists of 127 high-quality elements, designed for enthusiasts aged 6 and above.

Image: Front of the COBI 3104 Patton M48 building blocks box, showing the assembled tank model and key product details.
2. Safety Information
WARNING: CHOKING HAZARD. This product contains small parts which may be detached. Not suitable for children under 3 years due to potential choking hazards. Adult supervision is recommended for younger builders. Please keep all packaging materials away from children.
3. Package Contents
The COBI 3104 Patton M48 building blocks set includes:
- 127 high-quality plastic building block elements.
- One instruction booklet with clear, intuitive assembly diagrams.
Please verify all components are present before beginning assembly. If any parts are missing or damaged, please contact COBI customer support.
4. Assembly Instructions
Follow the detailed, step-by-step instructions provided in the included instruction booklet. The diagrams and symbols are designed for clear understanding. Ensure each piece is firmly connected to ensure the stability of the model.
- Unpack all building block elements and the instruction booklet.
- Organize pieces by type or color as suggested in the booklet to facilitate assembly.
- Begin assembly from step 1, carefully following each diagram.
- Press blocks together firmly to ensure a secure connection.
- Refer to the booklet for any specific details regarding piece orientation or placement.
The assembly process is designed to be intuitive, even for advanced builders seeking interesting elements.
5. Features and Operation
Once assembled, the COBI 3104 Patton M48 model offers interactive features:
- Movable Turret: The tank's turret can be rotated 360 degrees.
- Adjustable Cannon: The main cannon can be moved up and down.

Image: An illustration demonstrating the rotational movement of the tank's turret and the vertical movement of its cannon.
6. Maintenance
To ensure the longevity and appearance of your COBI building blocks model:
- Cleaning: Dust the model regularly with a soft, dry cloth. For deeper cleaning, gently wipe with a damp cloth and mild soap, then rinse and air dry thoroughly. Avoid harsh chemicals.
- 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 to prevent accidental disassembly or damage to individual pieces.
7. Troubleshooting
If you encounter any issues during assembly or with the completed model:
- Missing Pieces: Double-check the packaging and surrounding area. If a piece is genuinely missing, contact COBI customer support with the model number and a description of the missing part.
- Difficulty Connecting Pieces: Ensure pieces are correctly oriented and apply firm, even pressure. Avoid forcing pieces, which can cause damage.
- Model Instability: Review the assembly steps to ensure all connections are secure and no steps were missed.
8. Specifications
| Model Number | 3104 |
| Brand | COBI |
| Scale | 1:72 |
| Number of Pieces | 127 |
| Material | Plastic |
| Recommended Age | 6 - 99 years |
| Educational Objective | Intelligence Development |
Assembled Model Dimensions
The assembled COBI 3104 Patton M48 model has the following approximate dimensions:
- Length: 12 cm (4.7 inches)
- Width: 4.5 cm (1.8 inches)
- Height: 5 cm (2 inches)

Image: Side view of the assembled tank, indicating a length of 12 cm (4.7") and a height of 5 cm (2").

Image: Top view of the assembled tank, indicating a length of 12 cm (4.7") and a width of 4.5 cm (1.8").
Historical Specifications of the M48 Patton Tank

Image: A graphic detailing the historical specifications of the M48 Patton tank, including service years, origin, type, weight, armor, armament, engine, speed, and crew.
- In U.S. Service: 1952-1980's
- Place of Origin: United States
- Type: Main Battle Tank
- Weight: 47.6t (105,000 lb)
- Armour: 25-110mm (1-4.3")
- Armament: 1x 90mm (3.5") M41, 1x 12.7mm (.50") Browning M2HB, 1x 7.62mm (.30") M1919A4
- Engine: Continental AVI-1790-8
- Speed: 48 KM/H (30 MPH)
- Crew: 4
9. Warranty and Support
COBI products are manufactured to high-quality standards. For any questions regarding product assembly, missing parts, or other support needs, please refer to the contact information provided on the product packaging or visit the official COBI website. Please retain your proof of purchase for any warranty claims.