FAFREES F20 Max Electric Bicycle User Manual

Thank You for Purchasing the Fafrees F20 Max Ebike

FAFREES is proud to offer a quality product designed for years of enjoyment. Users should read and understand this manual fully before assembling and riding the bike. For questions after reading this manual, Fafrees support can be contacted by email or phone.

Using This Manual

This manual provides details on the product, its equipment, operation, maintenance, and other helpful tips. Users should read it carefully and familiarize themselves with the ebike to ensure safe use and prevent accidents. The manual contains warnings and cautions regarding safe operation and consequences of improper setup, operation, and maintenance. All information should be carefully reviewed, and Fafrees should be contacted immediately for any questions.

Notes, warnings, and cautions are marked by the Caution Symbol. Special attention should be given to information marked with NOTICE.

This manual, along with other documents included with the bike, should be kept for future reference. All content is subject to change or withdrawal without notice.

The latest version of the manual can be viewed and downloaded at https://www.fafreesebike.com/pages/user-manual. Fafrees strives for documentation accuracy but assumes no responsibility or liability for errors or inaccuracies.

It is impossible to anticipate every situation or condition during riding. This manual does not represent safe use under all conditions. Risks associated with bike use cannot be predicted or avoided and are the sole responsibility of the rider.

IMPORTANT! Please find the frame number of your ebike, located near the front wheel, and write it down here for future reference: ____________________. This number is the unique identification code of your ebike.

(Description of image: A FAFREES F20 Max Electric Bicycle is shown from the side. A red arrow points to the area near the front wheel where the frame number is typically located.)

General Safety

WARNING! Basic precautions must always be followed when using this product, including:

WARNING! Compliance with all traffic laws and use of proper equipment is the rider's responsibility. This includes appropriate cycling attire and bike maintenance.

Observe all local bicycle traffic laws and regulations.

Wet Weather

Riding in wet weather is not recommended if avoidable. Ride in wet weather only if necessary.

Electric bikes are not for use in heavy rain or streams. Never immerse or submerge this product in water or liquid, as the electrical system may be damaged.

Night Riding

Cyclists should ride at night with extreme caution. Night riding is riskier than day riding due to the difficulty for drivers and pedestrians to spot bicyclists in the dark.

Individuals aware of increased risks should take extra care when riding at dawn, dusk, or night. Choose suitable apparel and specialized equipment when riding in unfavorable conditions to reduce injury risk.

Warning! Reflectors are not a substitute for required lighting.

Cyclists are nearly invisible to other cyclists and motorists without necessary lights and reflective gear. Make every effort to be visible at night using lights and reflectors. Inadequate lighting precautions can cause fatalities or significant injuries. Reflectors are designed to reflect light from passing cars and street lights, increasing cyclist visibility in motion.

Caution!

Reflectors and their mounting brackets should be checked regularly for cleanliness, straightness, and secure mounting. Ensure compliance with all local laws about night riding. Recommendations include:

Assembly and Fit

Correct assembly and fit are essential for bicycling safety, performance, and comfort. Even with experience, skill, and tools, Fafrees recommends having a certified, reputable bike mechanic check your work before your first ride.

NOTICE:

If users lack the experience, skill, and tools for assembly and fit, Fafrees highly recommends a certified, reputable bike mechanic complete these procedures and any future adjustments or tuning.

NOTICE:

Securing the front wheel and checking rear wheel axle nut tightness is critical. These mechanisms may loosen during shipment or over time. All wheel mounting hardware torque and security should be inspected upon arrival and regularly. Both wheels must be properly secured before operating the bike.

Mandatory Equipment and Use Locations

Before riding, ensure all required and recommended safety equipment is present and all laws pertaining to electric bike use in your region are followed. Laws may specify mandatory equipment, hand signals, and riding locations.

Changing Components or Attaching Accessories

Using non-original components or spare parts can jeopardize ebike safety, void warranty, and in some cases, cause non-compliance with bike laws.

The replacement of original components or installation of third-party accessories not explicitly recommended by Fafrees for your bike model is at your own risk. Using aftermarket accessories or components not tested by Fafrees for safety and compatibility may void your warranty, create unsafe riding conditions, damage property or your bike, or result in serious injury or death.

Safety Check Before Each Ride

Always check the bike's condition before riding, in addition to regular maintenance. If unsure how to conduct a complete check, consult a certified, reputable bike mechanic.

Electrical System

The electric system powers several ebike components. Users must familiarize themselves with all aspects of the electrical system and check its correct operation before every ride. Front and rear brake levers contain safety power cutoff switches that disable hub motor assistance when applied. Both levers should be checked for correct operation. If brake lever cutoff switches, pedal assistance, or lighting functions abnormally, intermittently, or not working, discontinue ebike use immediately and contact the Fafrees Support team.

Brakes

Ensure brakes and their system components are undamaged, properly secured, and working correctly. When fully squeezed, both front and rear brake levers should not touch the handlebar. Take the bike to a certified, reputable bike mechanic for brake repair if a problem is found.

Tires and Wheels

Wheels should always spin straight and must be repaired or replaced if they wobble side to side or up and down. If wheels become untrue or spokes loosen (which can happen with normal use), Fafrees recommends a certified, reputable bike mechanic perform all wheel tuning and truing. Do not attempt to true wheels or tighten spokes without adequate knowledge, tools, and experience. Ensure tires and inner tubes are in good working condition without visual damage and have the correct air pressure as stated on the tire. Always replace punctured, cut, or damaged tires and inner tubes before riding. Incorrect air pressure can reduce performance, increase tire and component wear, and make riding unsafe.

Accessories, Straps, and Hardware

Ensure all hardware is secured and all approved accessories are properly attached per manufacturer's instructions. It is good practice to inspect all hardware, straps, and accessories before each ride. If anything seems wrong or uncertain, have it checked by a certified, reputable bike mechanic.

Suspension, Handlebar, Grips, and Seat Adjustments

The suspension fork affects bike handling, so users must understand its function. The suspension fork should be properly adjusted to rider weight and terrain. Ensure the handlebar and handlebar stem are properly aligned, fitted to the user, and secured to recommended torque values. Handlebar grips should not move easily and should be replaced if loose, worn, or damaged. The seat and seatpost should be properly aligned, fitted to the user, and the seatpost quick release should be properly tightened, fully closed, and secured before riding.

Battery Charged, Secured, and Unplugged

Ensure the battery is adequately charged and operating properly. Ensure the battery charger is unplugged from the outlet and stored safely before riding. The battery MUST be locked onto the frame battery mount properly before use. Do not operate the electrical system if the battery is removed.

Charger Safety Information

General Operating Rules

Notice: Pay special attention to all general operating rules below before operating your Fafrees bike.

Safety Notes

The following safety notes provide additional information on safe bike operation and should be closely reviewed. Failure to review these notes can lead to serious injury or death.

General Warnings

Like any sport, bicycling involves risk of damage, injury, and death. By choosing to ride a bike, users assume responsibility for that risk. Knowing and practicing safe and responsible riding rules, along with proper use and maintenance, reduces the risk of damage, injury, and death.

Never operate a bike under the influence of alcohol, drugs, or any substance or condition that could impair motor functions, judgment, or the ability to safely operate a bike or another vehicle.

The ebike is designed for use by persons 18 years old and older. Riders must have the physical condition, reaction time, and mental capability to ride safely and manage traffic, road conditions, and sudden situations, as well as respect laws governing electric bike use, regardless of age. If you have an impairment or disability (visual, hearing, physical, cognitive/language, seizure disorder, or any other physical condition that could impact your ability to safely operate a vehicle), consult your physician before riding any bike.

Caution!

Fafrees is not liable for accidents, injuries, or product malfunction resulting from unauthorized changes, modifications, or tampering with any part of original specifications.

SAVE THESE INSTRUCTIONS

Specifications

Model NameF20 Max
Max. Load Capacity330lbs. / 150 kg
MAX.Speed25 KMH
Motor48V 500W Brushless Hub
Battery48V 22.5AH Li-ion
Wheel Size20 x 4.0" Front / Rear
Tire PressureInflation to 5-30 PSI
Charger48V 3.0A
Input voltage220V
Charging TimeApprox. 7 Hours
Water ResistanceIPX3
Size171*62*125 cm
Weight69 lbs / 31.5 kg
LightFront / Rear
BrakeMechanical disc brakes
TransmissionShimano 7s

Product Overview

(Description of diagram: A detailed exploded view diagram of the FAFREES F20 Max Electric Bicycle with numbered components. The main components are:

What's in the Box

Installation Instruction

NOTICE:

The following steps are a general guide for ebike assembly and are not a complete or comprehensive manual for all aspects of assembly, maintenance, and repair. Consult a certified, reputable bike mechanic for assistance.

Step 1: Unpack the bike.

Open the bike box. With the help of another person capable of safely lifting a heavy object, remove the ebike from the box. Carefully remove packaging material protecting the bike frame and components. The charger and accessories are in a small box. Recycle packaging materials, especially cardboard and foam, whenever possible.

Step 2: Handlebar installation.

(Description of image A: A FAFREES F20 Max Electric Bicycle is shown folded, with protective foams still attached.

A. Remove all protective foams, then place the bicycle as shown.

Description of image B: Hands are shown inserting the handlebar stem into the bike's head tube.

B. Insert the handlebar into the tube. Fix the handlebar at the proper height and lock it.

Step 3: Saddle installation.

(Description of image: Hands are shown inserting the seat post with saddle into the bike's seat tube.)

Insert the seat post into the tube. Fix the seat post at the proper height and lock it. The height of the seat post cannot exceed the highest scale line indicated on the seat post.

Step 4: Pedal installation.

(Description of images: Two close-up images show hands installing pedals onto the crank arms. One image shows the right pedal being screwed in clockwise, and the other shows the left pedal being screwed in counter-clockwise.)

Note the markings on the pedal screws and crank arms. "L" indicates the left pedal, "R" indicates the right pedal. The right pedal is installed on the side of the sprocket.

NOTE: The right pedal (with "R" sticker label) is threaded to tighten by turning clockwise. The left pedal (with "L" sticker label) is reverse-threaded and tightens counterclockwise.

Step 5: Head light installation.

(Description of image: Hands are shown adjusting the position of the front headlight on the bike's front fork.)

Loosen the front light fixing screw on the front fork. Adjust the headlight to the desired position, then tighten the screw with a hex key and a wrench.

Step 6: Front shelf installation.

(Description of image: Hands are shown adjusting the position of a front cargo shelf on the bike's front fork.)

Loosen the front light fixing screw on the front fork. Adjust the headlight to the desired position, then tighten the screw with a hex key.

Step 7: Footrest installation.

(Description of images: Three sequential close-up images show hands installing footrests onto the bike frame, aligning mounting holes, and tightening screws.)

Remove the screws with a hex key. Align the mounting holes of the footrests facing forward, align the mounting holes, and tighten the screws. Install the pedal cover, align the mounting holes, and tighten the screws.

Step 8: Wheel reflector installation.

(Description of images: Three sequential close-up images show hands installing a reflector between wheel spokes, aligning the clip, and tightening the screw.)

Place the reflector between the spokes. Align the reflector clip with the slot, insert the clip through the spoke into the slot, and tighten the screw to secure the reflector clip.

Step 9: Adjust the display and the bell.

(Description of images: Two images show hands adjusting the position of the display and bell on the handlebar.)

Adjust the position of the display and bell and tighten the screws with a hex key.

Step 10: Inflate tires.

Check that tire beads and tires are evenly seated on the rims. Use a pump with a Schrader valve to inflate each tire to the recommended pressure indicated on the tire. Do not overinflate or underinflate tires.

Battery Charging

Charging Procedure

Follow these steps for charging your ebike battery from Fafrees Bikes:

  1. Ensure the battery is off.
  2. Remove the rubber cover on the charging port.
  3. Plug the charger into the battery's charging port, BEFORE PLUGGING CHARGER INTO POWER OUTLET.

(Description of image: A close-up of the FAFREES ebike battery with its charging port visible, and a charger plug being inserted.)

With the battery on or off the bike, place the charger on a flat, secure surface, and connect the DC output plug from the charger to the charging port on the side of the battery.

  1. Plug the charger into a power outlet: Connect the charger input plug (110/240-volt plug) to the power outlet. Charging should initiate and will be indicated by the LED charge status light on the charger illuminating as red light.
  2. Unplug the charger from the outlet, then the charging port: Once fully charged (indicated by the charging indicator light turning green), unplug the charger from the wall outlet first and then remove the charger outlet plug from the battery charging port.

Battery Charging Information

Check the charger, charger cables, and battery for damage before each charge.

Charge in an area clear and safe from potential damage or tripping situations. Always charge your battery between 0°C and 40°C (32°F and 104°F).

The battery can be charged on or off the bike. To remove the battery, turn the key to the unlocked position and take the battery out.

The battery should be recharged after each use for full range on the next ride. There is no memory effect, so charging after a short ride will not cause damage.

The charger indicator light will show red during charging and turn green when charging is complete. Ensure the light faces upward when charging.

Remove the charger from the battery within one hour of the green light indicating a complete charge. The charger automatically stops charging when full, but unnecessary wear of charging components can occur if left attached for over 12 hours.

DO NOT leave a charging battery unattended.

Failure to follow Battery Charging Information could result in unnecessary wear to charging components, battery, and/or charger, and could lead to an under-performing or non-functional battery. Replacement will not be covered under warranty.

Removing the Battery

(Description of image: A close-up of the FAFREES ebike battery being removed from the frame, with a key inserted into the lock.)

To remove the battery from the bike, insert the key and turn to the unlocked position. Resistance will be felt when the battery is completely locked.

Use caution to avoid damage to battery connector terminals, which are exposed when the battery is unlocked and removed from the frame. In case of damage to terminals or battery mounts, discontinue use and contact Fafrees Support immediately.

Installing the Battery

Ensure the battery is turned off.

DO NOT force the battery into the tray; slowly align and gently push the battery down into the tray. Then push the battery in (ensure sufficient force) until a “CLICK” sound is heard. Slightly turn the key to feel for resistance. If resistance is felt, the battery is completely locked.

Tire Information

F20 Max uses 20" x 4.0" rubber tires with inner tubes. Tires are designed for durability and safety for regular cycling activities and should be checked before each use for proper inflation and condition. Proper inflation, care, and timely replacement help maintain operational characteristics and avoid unsafe conditions.

Fafrees recommends 5-30 PSI for stock tires on F20 Max. Always stay within the manufacturer's recommended air pressure range listed on the tire sidewall.

It is critically important that proper air pressure is always maintained in pneumatic tires.

Do not underinflate or overinflate your tires. Low pressure may result in loss of control, and overinflated tires may burst. Failure to always maintain the indicated air pressure rating can result in tire and/or wheel failure.

Inflate your tires from a regulated air source with an available pressure gauge.

Inflating from an unregulated air source could overinflate them, resulting in a burst tire. Even tires with built-in flat-preventative liners can get flats from punctures, pinches, impact, and other causes. When tire wear is evident or a flat tire is discovered, tires and/or tubes must be replaced before operating the bike to prevent injury or damage.

When changing a tire or tube, ensure all air pressure has been removed from the inner tube prior to removing the tire from the rim. Failure to remove all air pressure can result in serious injury.

Storage Instruction

If storing your bike for longer than 2 weeks, follow these instructions to maintain battery health and longevity:

Failure to follow proper battery storage procedures can result in a non-functional battery. Replacement will not be covered under warranty.

DO NOT cover the charger while charging.

The charger air cools and needs to be on a hard, flat surface in an open space. Use the charger with indicator lights facing upward.

DO NOT open the battery housing, which will void the warranty and can result in damage to the battery, property, or cause serious injury and/or death.

Quick Start Guide

Getting Started

(Description of image: A FAFREES YL80C LCD display unit and its associated button control pad.)

Figure 1: YL80C display

Button definitions: The YL80C display has five buttons on the operating unit:

Press the power button on the display control pad to turn on the bike. To turn off, press and hold the power button for 3 seconds. The display automatically shuts off if unused for more than 10 minutes.

Home Page

(Description of image: A diagram of the YL80C LCD display showing various indicators and their meanings.)

The display shows:

Display Control Pad

  1. Display interface switching: When powered on, the display defaults to Current Speed (km/h) and Trip Odometer (km). Short press the 'i' button to switch between Trip Odometer (km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).
  2. Assist level: Use the plus/minus buttons to switch the assist level. Power assist is triggered when pedaling forward and stops when pedaling stops, sometimes with a delay.
  3. Walk Assist Mode: Long press the minus button to enter walk assist mode. The electric bicycle runs at a constant speed of 6 km/h. Release the '-' button to immediately stop power output and return to the previous state.
  4. Turn on the light: Press and hold the light button on the right-hand side to turn the headlight on/off.

Electric Mode

Users do not need to pedal if using the hand throttle. The throttle is controlled by twisting it from the resting position; the farther it is twisted, the more power is sent to the motor to accelerate the e-bike. The hand throttle can be removed if not needed or due to local law restrictions.

Cruise Control

Cruise control is triggered by holding the thumb throttle and riding at the same speed for 8 seconds. It is released by braking/pedaling or throttling.

Error Code

If a fault occurs in the electronic system, the display will automatically show an error code. Definitions are below:

Error codeDefinitionError codeDefinition
E21Current failureE24Hall failure
E22Throttle failureE25Brake failure
E23Motor phase failureE30Communication failure

Users must follow the instructions and warnings in this manual for safety.

DO NOT attempt to operate your bike until adequate knowledge of its control and operation is gained. Damage caused by failing to follow instructions is not covered under warranty and could result in serious injury or death. Contact Fafrees support for questions about assembly or operation.

Parking, Storage, and Transport

Follow these basic parking, storage, and transport tips to ensure your bike is well cared for on and off the road.

User Maintenance Instructions

If users lack the experience, skill, and tools for bike maintenance and adjustment, Fafrees strongly recommends having a certified, reputable bike mechanic maintain, tune, and ensure the bike is safe to ride.

Safety Checklist

Before every ride, and after every 25-45 miles (40-72 km), Fafrees advises following this safety checklist:

Safety CheckBasic Steps
BrakesEnsure front and rear brakes work properly. Check brake pads for wear and proper positioning. Check brake cables for grease, proper adjustment, and signs of wear. Check brake levers for proper function and secure attachment to handlebar. Check brake levers are firm and that brake, motor cutoff, and brake light functions properly.
Wheels and TiresEnsure tires are inflated to recommended limits and hold air. Check tires for good tread, no bulges, excessive wear, and additional damage. Check rims for trueness, wobbles, dents, or kinks. Check all wheel spokes are snug and not broken. Check axle nuts and front wheel quick release for tightness. Check quick release skewer locking lever for proper tension, closure, and security.
SteeringEnsure steering is functional and handlebar and stem are properly fastened and adjusted. Twist handlebar to check stem clamp bolt security. Check handlebar position relative to fork and direction of travel.
ChainEnsure chain is clean, oiled, and runs smoothly. Extra care is needed in wet, salty/corrosive, or dusty conditions.
BearingsEnsure all bearings are lubricated, run freely, and show no excess movement, grinding, or rattling. Check headset, wheel bearings, pedal bearings, and bottom bracket bearings.
Cranks and PedalsEnsure pedals are securely tightened to cranks. Ensure cranks are securely tightened and not bent.
Derailleur and Mechanical CablesCheck derailleur adjustment and proper function. Ensure shifter and brake levers are securely attached to handlebar. Ensure all shifter and brake cables are properly lubricated.
Frame, Fork, and SeatCheck frame and fork for bends or breaks; replace if found. Check seat for proper adjustment, and seatpost quick release lever for secure tightening.
Motor DriveEnsure hub motor spins smoothly and motor bearings are in good working order.
Assembly and ThrottleEnsure all power cables to hub motor are secured and undamaged. Ensure hub motor axle bolts, torque arm, torque arm bolt, and torque washers are in place.
BatteryEnsure battery is charged before use. Ensure no damage to battery. Lock battery to frame and ensure it is secured. Charge and store bike and battery in a dry location, between 0°C and 40°C (32°F and 104°F).
Electrical CablesExamine connectors for complete seating and dryness, free of debris or moisture. Inspect cables and cable housing. Ensure brake, tail, and headlights are adjusted correctly, working, and not blocked.
AccessoriesEnsure every reflector is fitted correctly and not covered. Ensure other bike components are securely fastened and working as intended. Check safety equipment, including helmet. Ensure mounting gear is securely fastened if vehicle has front rack, rear rack, basket, etc. Ensure taillight and power cable are securely fastened if vehicle has rear rack. Ensure fender mounting hardware is securely fastened if vehicle has fenders. Ensure fenders are free of cracks and holes.

Troubleshooting

SymptomsPossible CausesMost Common Solutions
The bike can't be powered on1. Insufficient battery power
2. Faulty connections
3. Battery not fully seated in tray
4. Improper turn on sequence
5. Brakes are applied
1. Charge the battery
2. Clean and repair connectors
3. Install battery correctly
4. Turn on bike with proper sequence
5. Disengage brakes
Irregular acceleration and/or reduced top speed1. Insufficient battery power
2. Loose or damaged throttle
3. Misaligned or damaged magnet ring
1. Charge or replace battery
2. Replace throttle
3. Align or replace magnet ring
The motor does not respond when the bike is powered on1. Loose wiring
2. Loose or damaged throttle
3. Loose or damaged motor plug wire
4. Damaged motor
1. Repair and or reconnect
2. Tighten or replace
3. Secure or replace
4. Repair or replace
Reduced range1. Low tire pressure
2. Low or faulty battery
3. Driving with too many hills, headwind, braking, and/or excessive load
4. Battery discharged for long period without regular charges, aged, damaged.
5. Brakes rubbing
1. Adjust tire pressure
2. Check connections or charge battery
3. Assist with pedals or adjust route
4. Contact Product Support if range decline persists.
5. Adjust the brakes
Wheel or motor makes strange noises1. Loose or damaged wheel spokes or rim
2. Loose or damaged motor wiring
1. Tighten, repair, or replace
2. Reconnect or replace motor.

Limited Warranty

The bike's warranty and other binding legal terms (e.g., terms of purchase) are subject to change. To view current terms of purchase and warranty, visit https://www.fafreesebike.com/pages/warranty.

Warranty Info

Only the original owner of an ebike purchased from Fafrees online or Fafrees distributors is covered by this Limited Warranty. The Warranty Period begins upon receipt of the ebike and ends immediately upon the end of the Warranty Period.

The Limited Warranty is expressly limited to the replacement of a defective lithium ion battery (the "battery"), frame, forks, stem, handlebar, headset, seat post, saddle, brakes, lights, bottom bracket, crank set, pedals, rims, wheel hub, freewheel, cassette, derailleur, shifter, motor, throttle, controller, wiring harness, LCD display, kickstand, reflectors, and hardware (each a “covered component”).

Covered Components are warranted to be free of defects in materials and/or workmanship during the Warranty Period.

Damage to a covered component during shipping is not covered by this Limited Warranty, but Fafrees will replace such damaged components if notified within 3 days after receipt with a dated picture. Shipping damage claims are time-sensitive, and it is the purchaser's responsibility to immediately inspect the ebike for damage upon receipt.

This Limited Warranty Does Not Cover:

For the avoidance of doubt, Fafrees will not be liable and/or responsible for any damage, failure, or loss caused by any unauthorized service or use of unauthorized parts.

Claims Process:

Fafrees will not replace any covered components under this limited warranty without first seeing photos or video of the damaged components.

To exercise the right to receive a replacement for a Covered Component under this Limited Warranty, purchasers need to:

Fafrees's liability shall under no circumstances exceed the actual amount paid for the ebike, nor shall Fafrees be liable for any consequential, incidental, special, or punitive damages or losses, whether direct or indirect.

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