Introducció
Thank you for choosing the VAKOLE Y20 PRO 20" Folding Electric Bicycle. This manual provides essential information for the safe assembly, operation, and maintenance of your e-bike. Please read it thoroughly before your first ride and keep it for future reference. Proper understanding and adherence to these instructions will ensure optimal performance and longevity of your bicycle.

Image: The VAKOLE Y20 PRO folding electric bicycle in its full, unfolded state, showcasing el seu disseny i les seves característiques.
Informació de seguretat
Your safety is paramount. Always wear a helmet and appropriate safety gear when riding. Familiarize yourself with local traffic laws and regulations regarding electric bicycles.
Pautes generals de seguretat:
- Feu una inspecció prèvia a la conducció abans de cada ús, comprovant els frens, els pneumàtics i el nivell de la bateria.
- Ensure all quick releases and fasteners are securely tightened.
- No conduïu sota els efectes de l'alcohol o les drogues.
- Sigues conscient del teu entorn i condueix a la defensiva.
- Eviteu conduir en condicions meteorològiques adverses o sobre superfícies relliscoses.
- No supereu la capacitat màxima de pes de la bicicleta.
- Mantingueu les mans i els peus allunyats de les parts mòbils.
- Always use headlights and taillights when riding in low light conditions.
Seguretat de la bateria:
- Use only the charger provided by VAKOLE.
- Do not expose the battery to extreme temperatures or direct sunlight for extended periods.
- No intenteu obrir ni modificar la bateria.
- Carregueu la bateria en una zona ben ventilada, allunyada de materials inflamables.
- Si la bateria està danyada o mostra signes de sobreescalfament, deixeu-ne d'utilitzar-la immediatament i contacteu amb el servei d'assistència.
Configuració i muntatge
Your VAKOLE Y20 PRO electric bicycle requires some assembly before its first use. Please follow these steps carefully. A multi-function tool kit is included to assist with assembly.
1. Desembalatge i inspecció inicial
- Traieu amb cura la bicicleta i tots els components de l'embalatge.
- Inspect for any visible damage during shipping. Report any damage to your retailer immediately.
- Ensure all included accessories are present: multi-function tool kit, phone holder, charger, front basket.
2. Unfolding the Bicycle
The Y20 PRO is designed for easy folding and unfolding.
- Place the folded bicycle on a flat, stable surface.
- Release the frame folding latch, typically located in the middle of the main frame tube.
- Carefully unfold the frame until it locks into place. Ensure the latch is fully engaged and secured.
- Adjust the handlebar stem to its upright position and secure the quick-release lever.
- Adjust the seat post to your desired height and secure the quick-release lever.

Image: The VAKOLE Y20 PRO electric bicycle folded and stored in a car trunk, demonstrating its compact size for transport.
3. Instal·lació de la roda davantera
If the front wheel is not pre-installed, follow these steps:
- Align the front wheel with the fork dropouts. Ensure the brake rotor slides correctly into the brake caliper.
- Insert the quick-release skewer or axle through the hub and secure it according to the manufacturer's instructions.
- Tighten the quick-release lever or axle nuts firmly.
4. Instal·lació del pedal
- Identifiqueu els pedals esquerre (L) i dret (R).
- The right pedal (R) threads clockwise into the right crank arm.
- The left pedal (L) threads counter-clockwise into the left crank arm.
- Tighten securely with a wrench.
5. Instal·lació de la bateria i càrrega inicial
The 48V 20Ah battery is typically integrated into the frame.
- Insert the battery into its compartment, ensuring it clicks securely into place.
- Use the provided key to lock the battery. Remove the key before riding.
- Connecteu el carregador al port de càrrega de la bateria i després a una presa de corrent.
- Allow the battery to fully charge before your first ride. The charging indicator on the charger will change color when complete.

Imatge: Primer pla view of the VAKOLE Y20 PRO's integrated battery pack, showing the keyhole for locking and unlocking the battery.
6. Comprovacions prèvies a la conducció
- Pneumàtics: Ensure tires are inflated to the recommended pressure (check sidewall for range). The 4.0-inch fat tires provide strong grip and comfort.
- Frens: Test both front and rear hydraulic disc brakes for proper function and responsiveness.
- Handlebars & Seat: Confirm handlebars and seat post are securely tightened and at a comfortable height.
- Engranatges: Check that the 7-speed Shimano gear system shifts smoothly.
- Llums: Verify headlights, taillights, and turn signals are operational.
Funcionament
Operating your VAKOLE Y20 PRO is intuitive, offering both pedal-assist and throttle modes (where permitted by local regulations).
1. Encès / apagat
- To power on the e-bike, press and hold the power button on the display unit.
- Per apagar l'aparell, premeu i manteniu premut el botó d'engegada de nou fins que la pantalla s'apagui.
2. Funcions de visualització
The intelligent display shows important information such as speed, battery level, and pedal assist level. Refer to the specific display manual for detailed functions and settings.
3. Sistema d'assistència al pedaleig (PAS)
The Y20 PRO features a 5-level pedal assist system.
- Use the '+' and '-' buttons on the control panel to adjust the assist level.
- Level 0: No electric assistance.
- Level 1-5: Increasing levels of motor assistance. Level 1 provides minimal assistance, suitable for low speeds, while Level 5 provides maximum power for steep inclines or higher speeds.
- The motor engages when you start pedaling and disengages when you stop or apply the brakes.
4. Throttle Operation (if applicable)
Your e-bike may be equipped with a throttle for electric-only propulsion.
- Twist the throttle grip to engage the motor without pedaling.
- Nota: In some regions (e.g., Germany), electric-only throttle operation without pedaling may be restricted or prohibited for certain e-bike classifications. Always comply with local regulations.
5. Canvi de marxes
The 7-speed Shimano gear system allows you to adjust your pedaling effort to different terrains.
- Canvieu de marxes suaument pedalant suaument mentre feu servir la palanca de canvis.
- Lower gears (larger cogs) are for climbing hills, higher gears (smaller cogs) are for flat terrain and speed.

Image: Close-up of the VAKOLE Y20 PRO's rear wheel, showing the Shimano Tourney TZ derailleur and 7-speed cassette, responsible for gear changes.
6. Hydraulic Disc Brakes
The Y20 PRO is equipped with hydraulic disc brakes for superior stopping power and control.
- Apply both brake levers gently and evenly for controlled stopping.
- Avoid sudden, hard braking, especially at high speeds or on loose surfaces.
- Hydraulic brakes offer excellent heat dissipation and durability.
7. Smart App Control (Key Disp)
The Y20 PRO supports the Key Disp smart application, enhancing your riding experience.
- Download the Key Disp app from your smartphone's app store.
- Pair your e-bike with the app via Bluetooth.
- The app allows you to track your bike's position (iOS only) and customize various bike settings.
Manteniment
Regular maintenance is crucial for the safety, performance, and longevity of your VAKOLE Y20 PRO electric bicycle.
1. Cura de la bateria
- Carregueu la bateria regularment, fins i tot si no l'esteu fent servir, per mantenir-ne el bon estat.
- Eviteu esgotar completament la bateria.
- Guardeu la bateria en un lloc fresc i sec, idealment entre 10 °C i 20 °C (50 °F i 68 °F).
- Do not store the battery fully charged or completely empty for extended periods. Aim for 50-70% charge for long-term storage.
2. Pressió dels pneumàtics
- Comproveu la pressió dels pneumàtics abans de cada viatge.
- Maintain pressure within the range indicated on the tire sidewall. Proper inflation improves efficiency and reduces the risk of punctures.
- The 4.0-inch fat tires may require lower pressures for off-road comfort and grip, and higher pressures for road efficiency.
3. Sistema de frens
- Inspeccioneu regularment les pastilles de fre per detectar desgast i substituïu-les quan sigui necessari.
- Check brake fluid levels and bleed the hydraulic system if braking feels spongy or inconsistent. This should ideally be done by a qualified bicycle mechanic.
- Ensure brake rotors are clean and free of oil or grease.
4. Chain and Drivetrain
- Keep the chain clean and lubricated to ensure smooth shifting and prevent premature wear.
- Inspect the chain, cassette, and chainring for wear or damage.
- Adjust the derailleur if shifting becomes imprecise.
5. Neteja general
- Neteja la teva bicicleta elèctrica regularment amb anuncisamp drap i sabó suau.
- Eviteu utilitzar rentadores d'alta pressió directament sobre components elèctrics o coixinets.
- Dry the bicycle thoroughly after cleaning.
Resolució de problemes
This section addresses common issues you might encounter with your VAKOLE Y20 PRO. For problems not listed here, please contact customer support.
1. E-bike Does Not Power On
- Comproveu la bateria: Ensure the battery is fully charged and securely installed. Verify it is locked into place with the key.
- Connexió de la bateria: Confirm all battery connections are firm.
- Cable de pantalla: Check if the display unit's cable is properly connected.
2. Motor Not Providing Assistance (PAS)
- Nivell PAS: Ensure the pedal assist level is set to 1 or higher on the display.
- Pedaleig: The motor only engages when you are pedaling.
- Palanques de fre: Check if brake levers are fully released; some e-bikes have cut-off switches that disengage the motor when brakes are applied.
- Nivell de bateria: Verifiqueu que la bateria tingui prou càrrega.
3. Reduced Range
- Pressió dels pneumàtics: Under-inflated tires significantly reduce range.
- Terrain & Riding Style: Frequent use of higher PAS levels, riding uphill, or carrying heavy loads will reduce range.
- Temperatura: Cold weather can temporarily reduce battery performance and range.
- Salut de la bateria: Over time, battery capacity may degrade. Ensure proper battery care as outlined in the Maintenance section.
4. Brakes Squealing or Ineffective
- Contaminació: Clean brake rotors and pads if contaminated with oil or grease.
- Desgast de les coixinetes: Inspeccioneu les pastilles de fre per detectar desgast i substituïu-les si cal.
- Sistema hidràulic: If braking feels spongy, the hydraulic system may need bleeding or fluid replacement by a professional.
Especificacions
Key technical specifications for the VAKOLE Y20 PRO electric folding bicycle.
| Característica | Detall |
|---|---|
| Número de model | Y20 PRO |
| Marca | VAKOLE |
| Mida de la roda | 20 polzades |
| Tipus de pneumàtic | 4.0-inch Fat Tires |
| Bateria | 48V 20Ah (960 Wh) |
| Interval estimat | 80 - 110 km (50 - 68 miles) per charge |
| Potència del motor | 250 Watts (rated) |
| Velocitat màxima | 25 km/h (15.5 mph) (regulated for EU standards) |
| Torque | 60 NM |
| Frens | Frens de disc hidràulics (davanters i posteriors) |
| Engranatges | Shimano de 7 velocitats |
| Material del marc | Acer d'aliatge |
| Suspensió | Suspensió de forquilla davantera |
| Característiques especials | Digital Display, Foldable, Portable, Smart App Control (Key Disp) |
| Pes de l'article | 36 kg (79.4 lliures) |
| Mides plegades | 96 x 44 x 75 cm (37.8 x 17.3 x 29.5 polzades) |
| Dimensions desplegades | 172 x 65 x 105 cm (67.7 x 25.6 x 41.3 polzades) |
| Alçada recomanada del genet | 165 - 200 cm (5'5" - 6'7") |
| Components inclosos | Multi-function tool kit, Phone holder, Charger, Front Basket |

Image: Diagram illustrating the weight and dimensions of the VAKOLE Y20 PRO electric bicycle, both folded and unfolded, along with recommended rider height.
Garantia i suport
For warranty information, please refer to the documentation provided with your purchase or contact the retailer directly. VAKOLE is committed to providing quality products and customer satisfaction.
Atenció al client:
If you encounter any issues or have questions regarding your VAKOLE Y20 PRO electric bicycle, please contact your point of purchase or the VAKOLE customer service team. Have your model number (Y20 PRO) and purchase date ready when contacting support.





