Introdución
Thank you for choosing the Fafrees F20 PRO Electric Bike. This manual provides essential information for the safe operation, assembly, maintenance, and troubleshooting of your new electric bicycle. Please read this manual thoroughly before your first ride to ensure proper usage and to maximize the lifespan of your bike.

Image: The Fafrees F20 PRO Electric Bike, black in color, shown from a three-quarter front view, highlighting its foldable frame, fat tires, and included storage bag.
Información de seguridade
Prioriza sempre a seguridade ao conducir a túa bicicleta eléctrica. O incumprimento das pautas de seguridade pode provocar lesións graves ou danos na bicicleta.
- Always wear a helmet that meets local safety standards.
- Asegúrate de que todos os compoñentes estean ben fixados antes de cada viaxe.
- Familiarízate coas leis e regulamentos de tráfico locais relativos ás bicicletas eléctricas.
- Non conduza baixo a influencia do alcol ou das drogas.
- Ten coidado co teu contorno e cos demais usuarios da estrada.
- Avoid riding in adverse weather conditions, such as heavy rain or snow, if possible.
- Regularly check tire pressure, brake function, and battery charge level.
Contido do paquete
Ao abrir o paquete, comproba que inclúa todos os seguintes elementos:
- 1 x Fafrees F20 PRO Electric Bike (partially assembled)
- 1 x cargador de batería
- 1 x Gift Box (contents may vary)
- 1 x Manual de usuario (este documento)
Configuración e montaxe
The Fafrees F20 PRO Electric Bike comes partially assembled. Follow these steps to complete the assembly:
- Desdobramento do cadro: Carefully unfold the main frame of the bike until it locks into place. Ensure the folding mechanism is securely latched.
- Installing the Handlebar: Insert the handlebar stem into the fork tube and tighten the quick-release lever or bolts as instructed. Ensure the handlebar is aligned with the front wheel.
- Colocación dos pedais: Identify the left (L) and right (R) pedals. Screw them into the corresponding crank arms. Note that the left pedal has a reverse thread. Tighten firmly with a wrench.
- Installing the Seat Post and Saddle: Insert the seat post with the saddle attached into the seat tube. Adjust the height to a comfortable riding position and secure it with the quick-release clamp. Important: Do not install the seat tube below the safe line marked on the post.
- Montaxe do faro: Attach the LED headlight to the designated mounting point on the front of the bike, usually on the fork or handlebar stem. Connect any necessary wiring.
- Instalación da batería: The battery may come pre-installed or require insertion. If not installed, slide the battery into its compartment (often within the frame or behind the seat tube) until it clicks into place. Ensure it is locked with the key if applicable.
- Carga inicial da batería: Before your first ride, fully charge the battery using the provided charger. Connect the charger to the bike's charging port and then to a power outlet. The indicator light on the charger will show charging status.
- Comprobacións previas á viaxe: Before riding, check tire pressure, brake functionality (front and rear), and ensure all bolts and quick releases are tight.

Imaxe: Primeiro plano view of the Fafrees F20 PRO's frame, illustrating the removable 18AH lithium battery compartment and the process of inserting and removing the battery.
Instrucións de funcionamento
Encendido/apagado
To power on the bike, press and hold the power button on the LCD display. To power off, press and hold the same button until the display turns off.
Funcións da pantalla LCD
The smart LCD display provides real-time information about your ride:
- Velocidade: Velocidade actual de condución.
- Nivel de batería: Indica a carga restante da batería.
- Quilometraxe: Displays trip distance or total odometer reading.
- Gear/PAS Level: Shows the current pedal assist level (PAS).
- Walk Assistance Mode: Activa unha asistencia a baixa velocidade para ir en bicicleta.
- Control de crucero: Mantén unha velocidade establecida sen necesidade de pisar continuamente o acelerador.

Imaxe: Unha detallada view of the Fafrees F20 PRO's handlebar, showcasing the smart color LCD display, bell, gear shift lever, power-off brake levers, and thumb throttle.
Modos de conducción
- Modo de asistencia ao pedaleo (PAS): The motor provides assistance as you pedal. Adjust the assist level using the display controls (usually '+' and '-' buttons). Higher levels provide more assistance.
- Modo totalmente eléctrico: Use the thumb throttle to propel the bike without pedaling. This mode consumes battery faster.
- Modo manual: Anda en bicicleta coma se fose unha bicicleta tradicional sen axuda de ningún motor.
Gears and Shifting
The F20 PRO is equipped with a 7-speed derailleur system. Use the gear shifter on the handlebar to change gears according to terrain and desired pedaling effort. Shift gears smoothly by easing off the pedals slightly during the shift.
Sistema de freos
The bike features front and rear mechanical 160mm disc brakes with power-off brake levers. Squeeze both brake levers simultaneously for effective and safe stopping. The power-off feature cuts motor power when brakes are applied.

Image: A close-up of the Fafrees F20 PRO's front wheel, highlighting the mechanical disc brake system, including the rotor, caliper, and power-off brake lever, emphasizing its stopping capabilities.
Mantemento
Regular maintenance is crucial for the longevity and safe operation of your Fafrees F20 PRO Electric Bike.
- Limpeza: Limpar a bicicleta regularmente con anunciosamp pano. Evite usar lavadoras de alta presión directamente sobre os compoñentes eléctricos.
- Lubricación: Lubricate the chain and other moving parts (e.g., derailleur pivots) periodically with bicycle-specific lubricant.
- Pneumáticos: Check tire pressure before each ride. The recommended pressure is usually indicated on the tire sidewall. Inspect tires for wear and damage.
- Freos: Regularly check brake pads for wear and ensure brake levers provide firm and responsive stopping power. Adjust brake cables as needed.
- Coidado da batería:
- Charge the battery fully after each ride, especially if it's been significantly discharged.
- Garde a batería nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.
- If storing the bike for an extended period, charge the battery to 50-70% every 1-2 months.
- Fixadores: Comprobe periodicamente que todos os parafusos, porcas e peches rápidos estean ben axustados.
Resolución de problemas
This section addresses common issues you might encounter with your Fafrees F20 PRO Electric Bike.
| Problema | Causa posible | Solución |
|---|---|---|
| A bicicleta non se acende. | Batería sen carga, batería mal colocada, cable de alimentación solto, problema coa pantalla. | Ensure battery is fully charged. Check if battery is securely inserted and locked. Inspect all cable connections. Contact support if issue persists. |
| O motor non axuda. | PAS level too low/off, battery low, brake levers engaged, motor connection issue. | Increase PAS level on display. Check battery charge. Ensure brake levers are fully released. Check motor cable connection. |
| Os freos parecen débiles ou esponxosos. | Pastillas de freo gastadas, cable de freo solto, aire no sistema hidráulico (se é o caso). | Inspect and replace worn brake pads. Adjust brake cable tension. For hydraulic brakes, bleeding may be required by a professional. |
| As engrenaxes non cambian con suavidade. | Derailleur out of adjustment, bent hanger, dirty chain. | Clean and lubricate the chain. Adjust derailleur limits and cable tension. If hanger is bent, seek professional repair. |
Especificacións
| Característica | Detalle |
|---|---|
| Modelo | F20 PRO |
| Motor | 250W Brushless Motor, 40N·M Torque |
| Velocidade máxima | 25 km/h |
| Batería | 36V 18Ah Lithium-ion (Removable) |
| Range (Full Electric) | 70-90 KM |
| Alcance (asistencia ao pedaleo) | 110-130 KM |
| Tempo de carga | 7-8 Hours (Full Charge) |
| Material do marco | Aluminum Alloy (Step-Through Foldable) |
| Pneumáticos | 20 * 3.0 Inch Fat Tires |
| Suspensión | Front Oil Suspension Fork (75mm travel) |
| Freos | Front & Rear Mechanical 160mm Disc Brakes |
| Engrenaxes | 7-Speed Derailleur |
| Mostrar | Smart Color LCD Display |
| Altura recomendada do piloto | 160-185 cm |
| Capacidade de carga máxima | 150 kg |
| Dimensións do produto (desdobrado) | 174 x 60 x 118 cm |
| Peso do produto | 25.5 kg |

Image: An illustration of the Fafrees F20 PRO's 250W brushless rear hub motor, detailing its internal components, along with icons indicating 40 Nm motor torque, 25 km/h max speed, and 7-speed Shimano gearing.

Image: A close-up of the Fafrees F20 PRO's front suspension fork and 20x3.0 inch fat tire, with an inset showing the suspension lock/open mechanism. Below are illustrations of various terrains (sand, mud, gravel, flat road) the fat tires can handle.
Garantía e Soporte
Fafrees provides a limited warranty for the F20 PRO Electric Bike. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, spare parts, or warranty claims, please contact the official Fafrees customer service or the authorized seller from whom you purchased the product.
Vendedor: Fafrees_Official Ebike Store
Keep your purchase receipt and the bike's serial number (usually located on the frame) readily available when contacting support.





