1. Introducció
Gràcies per la compraasing the Tamiya 1/32 Mini 4WD PRO No.21 Bison Magnum model kit. This kit allows you to assemble a high-performance four-wheel drive racer designed for enjoyable racing. This manual provides essential information for the assembly, setup, operation, and maintenance of your Mini 4WD PRO model.
2. Informació de seguretat
- This product is a plastic model kit and requires assembly.
- Keep small parts out of reach of young children to prevent choking hazards.
- Use appropriate tools as instructed and handle them with care to avoid injury.
- Assegureu-vos que les piles estiguin inserides amb la polaritat correcta. No barregeu piles velles i noves ni piles de diferents tipus.
- No llenceu les piles al foc.
- No specific safety warnings apply beyond general model kit handling and battery usage guidelines.
3. Instruccions de muntatge
This kit requires assembly. Please refer to the detailed instruction sheet included in the package for step-by-step guidance. The following provides an overview of key assembly features:
- Chassis Structure: The chassis is composed of three main parts: the nose, center, and tail units. These units can be attached and detached with a single touch, allowing for quick and wide-ranging setting changes.
- Col·locació del motor: A double shaft motor, with shafts extending from both ends, is mounted in the center of the chassis. This design achieves high drive efficiency.
- Body Design: The Bison Magnum features a curved body design, reminiscent of the Magnum Saber, with structural material-like shapes at the front of the cockpit and a distinctive boomerang-shaped rear wing. The nose unit used is N-02.
- Eines necessàries: Separate tools such as nippers, screwdrivers, and hobby knives are required for assembly.

Image: The Tamiya 1/32 Mini 4WD PRO No.21 Bison Magnum model kit, fully assembled and painted. The model measures 152mm in length.
4. Configuració
- Instal·lació de la bateria: Two AA batteries are required (sold separately). Install them by distributing them to the left and right of the motor. This low-center-of-gravity design contributes to stable high-speed running.
- Wheel and Tire Attachment: Securely attach the wheels and tires according to the assembly instructions.
- Roller Setup: Ensure all rollers are properly installed and move freely to optimize cornering performance.
5. Instruccions de funcionament
Once assembled and set up, your Tamiya Mini 4WD PRO Bison Magnum is ready for operation.
- Encès: Ensure the batteries are correctly installed and switch the power to the 'ON' position.
- Ús de la pista: Place the Mini 4WD on a designated Mini 4WD race track. The double shaft motor and low-center-of-gravity design provide stable and efficient high-speed performance.
- Ajustaments: The detachable chassis parts (nose, center, tail) allow for quick adjustments to adapt to different track layouts and conditions. Experiment with various settings to optimize performance.
6. Manteniment
Regular maintenance will ensure the longevity and optimal performance of your Mini 4WD PRO model.
- Neteja: After each use, clean the chassis, wheels, and motor area to remove dust and debris. Use a soft brush or cloth.
- Inspecció d'engranatges: Periodically check the gears for wear and tear. Replace any damaged gears to maintain smooth power transmission.
- Cura del motor: Keep the motor free from obstructions. If performance degrades, consider replacing the motor.
- Extracció de la bateria: Always remove batteries when the model is not in use for extended periods to prevent leakage.
7. Solució De Problemes
If you encounter issues with your Mini 4WD PRO, refer to the following common troubleshooting steps:
- Model does not move:
- Check if the batteries are correctly installed and charged.
- Assegureu-vos que l'interruptor d'alimentació estigui a la posició "ON".
- Verify that the motor is properly connected and functioning.
- Inspect gears for any obstructions or damage.
- Model runs slowly or inconsistently:
- Substituïu les piles velles per unes de noves.
- Clean any dirt or dust from the moving parts, especially around the axles and gears.
- Check for excessive friction in the drivetrain or wheels.
- Model veers off track:
- Ensure all wheels are securely attached and straight.
- Check the rollers for proper rotation and alignment.
- Inspect the chassis for any damage or warping.
8. Especificacions
| Marca | Tamiya |
| Nom del model | 1/32 Mini 4WD PRO No.21 Bison Magnum |
| Número de model | 18621 (TAM18621) |
| Escala | Escala 1: 32 |
| Longitud muntada | 152 mm |
| Amplada muntada | 92 mm |
| Tipus de material | Plàstic |
| Font d'alimentació | Funciona amb bateria |
| Piles necessàries | Yes (2 x AA batteries, sold separately) |
| Muntatge obligatori | Sí |
| GTIN | 04950344186211 |
9. Garantia i Suport
For any questions regarding assembly, missing parts, or product defects, please contact Tamiya customer support. Please retain your proof of purchase for warranty claims, if applicable. Specific warranty terms may vary by region.

