1. Introducció
This manual provides essential information for the installation, operation, and maintenance of your Z-FIRST 100mm Pro Scooter Wheels with ABEC 9 Bearings. Please read these instructions carefully before use to ensure proper function and longevity of your product. These wheels are designed for replacement on compatible pro scooters, including MGP, Razor, Lucky, and Envy models.
2. Característiques del producte
The Z-FIRST 100mm Pro Scooter Wheels are engineered for performance and durability. Key features include:
- Diàmetre de la roda: 100mm, a standard size for many pro scooters.
- Material: High-rebound 88A Super High Rebound (SHR) Polyurethane (PU) for optimal grip and durability.
- Rodaments: Pre-installed ABEC 9 bearings for smooth and fast rolling performance.
- Material bàsic: Durable stainless steel internal buckle material for strength and stability.
- Compatibilitat: Designed to fit a wide range of pro scooters, including MGP, Razor, Lucky, and Envy models.
- Contingut del paquet: Each package includes two (2) replacement wheels.

Imatge 2.1: Lateral view of a Z-FIRST 100mm Pro Scooter Wheel, highlighting the core and ABEC 9 bearing.
3. Guia d'instal·lació
Replacing your scooter wheels requires basic tools and attention to detail. Always ensure your scooter is stable before beginning any work.
Eines necessàries:
- Allen wrenches (typically 5mm or 6mm, check your scooter's hardware)
- Optional: Lubricant for axles, clean cloth
Instal·lació pas a pas:
- Prepara el patinet: Place your scooter upside down or on its side on a stable surface to easily access the wheels.
- Remove Old Wheels:
- Locate the axle bolts on both sides of the wheel.
- Using two Allen wrenches (one on each side), loosen and remove the axle bolt. Keep all washers and spacers in order.
- Carefully slide the old wheel off the axle.
- Inspect Axle and Spacers: Clean the axle and inspect any spacers for wear or damage. Replace if necessary.
- Install New Wheels:
- Slide the new Z-FIRST wheel onto the axle, ensuring any spacers are correctly positioned between the wheel and the fork/deck.
- Insert the axle bolt through the wheel and fork/deck.
- Tighten the axle bolt using both Allen wrenches. Do not overtighten; the wheel should spin freely without wobble.
- Test the Wheels: Spin each new wheel by hand to ensure it rotates smoothly and freely. Check for any rubbing or excessive play.

Image 3.1: A pair of Z-FIRST 100mm Pro Scooter Wheels ready for installation.
4. Pautes d'ús
Once installed, your new Z-FIRST wheels are ready for use. Follow these guidelines for optimal performance and safety:
- Viatge inicial: Take a short, controlled ride to get accustomed to the feel of the new wheels.
- Consciència de la superfície: While 88A SHR PU offers good grip, always be mindful of riding surfaces, especially wet or uneven terrain.
- Comprovacions periòdiques: Periodically check that axle bolts are tight and wheels spin freely. Loose bolts can be dangerous.
- Eviteu condicions extremes: Prolonged exposure to extreme heat, cold, or moisture can affect wheel and bearing performance.
5. Manteniment i cura
Proper maintenance will extend the life of your Z-FIRST scooter wheels and bearings.
- Rodes netes: Wipe down the wheels with a damp cloth to remove dirt and debris after rides.
- Bearing Care:
- Avoid riding through puddles or in heavy rain, as water can damage bearings.
- If bearings become noisy or sluggish, they may need cleaning and re-lubrication or replacement. Consult a professional if unsure.
- Comproveu el desgast: Regularly inspect the polyurethane for flat spots, cracks, or excessive wear. Replace wheels if significant damage is observed.
- Axle Tightness: Ensure axle bolts remain securely tightened.

Imatge 5.1: Part superior view of a Z-FIRST 100mm Pro Scooter Wheel, illustrating the tread surface.
6. Solució De Problemes
Consulteu la taula següent per veure els problemes habituals i les seves possibles solucions:
| Problema | Causa possible | Solució |
|---|---|---|
| La roda no gira lliurement. | Axle bolt overtightened; spacers incorrectly placed; debris in bearings. | Loosen axle bolt slightly; re-check spacer placement; clean bearings. |
| Wheels are noisy. | Bearings are dirty or dry; damaged bearings. | Clean and lubricate bearings; replace bearings if damaged. |
| Wheel wobbles. | Axle bolt loose; damaged wheel core or bearing. | Tighten axle bolt; inspect wheel and bearings for damage and replace if necessary. |
| Reduced grip or performance. | Excessive wear on polyurethane; riding on unsuitable surfaces. | Inspect wheels for wear and replace if needed; adjust riding style to surface conditions. |
7. Especificacions
Detailed technical specifications for the Z-FIRST 100mm Pro Scooter Wheels:
| Marca | Z-FIRST |
| Número de model | SCW-2-BP |
| Diàmetre de la roda | 100 mm |
| Material de la roda | 88A SHR (Super High Rebound) Polyurethane (PU) |
| Tipus de rodament | ABEC 9 |
| Internal Buckle Material | Acer inoxidable |
| Pes de l'article (per parell) | 14.88 unces (aproximadament 422 grams) |
| Color | Negre |
| Tipus de vehicle compatible | Scooter (MGP, Razor, Lucky, Envy Pro Scooters) |

Imatge 7.1: Frontal view of a Z-FIRST 100mm Pro Scooter Wheel, detailing the core design.
8. Garantia i Suport
Z-FIRST products are manufactured to high-quality standards. For any questions, concerns, or support regarding your Z-FIRST 100mm Pro Scooter Wheels, please contact the retailer or manufacturer directly. Keep your purchase receipt for any warranty claims.
For specific warranty details, refer to the information provided at the time of purchase or contact Z-FIRST customer service.