Engwe X20 Electric Bike User Manual

Thank you for choosing to be part of the Engwe E-bikes family. This manual will guide you through understanding and operating your new e-bike.

Table of Contents

Products Introduction and Assembly Instruction

Basic Parameters

Performance Index X20 (22.2AH) X20 (14.4AH)
Vehicle Size 67.7*11*44.4inches 67.7*11*44.4inches
Wheel Size 20inches 20inches
Body Material Aluminum alloy Aluminum alloy
Maximum Load 330.6lbs(150KG) 330.6lbs(150KG)
Vehicle Weight 83.7lbs(35KG) 71.6lbs (32.5KG)

Main Parameters of the Vehicle

Parameter Specification
Maximum Speed 31mph(50km/h)
Maximum Gradient 30°
Rear Derailleur 8speed
Max Range 62 miles (pure electric) / 93 miles (pedal assist)
Working Temperature -4-140°F (-20-60°C)

Battery Parameters

Parameter Specification
Rated Voltage 48V
Battery Capacity 14.4AH + 7.8AH (for 22.2AH model) / 14.4AH (for 14.4AH model)
Service Life 500 Times

Motor Parameters

Parameter Specification
Motor Power 750W
Motor Type Brushless Gear Motor
Maximum Torque 60Nm

Charger Parameters

Parameter Specification
Input Voltage 100-240V
Output Voltage 54V
Output Current 2A

What's in the Box

Assembly Instruction

Tools Included: Phillips Screwdriver, 8-10mm Wrench, 13-15mm Wrench, 14-17mm Wrench, 4mm Hex Key, 5mm Hex Key, 6mm Hex Key.

Included Accessories: Charger, Bicycle Pedals.

Step 1: Take out the front wheel.

Step 2: Remove the protection cap from both sides of the front wheel.

Step 3: Clamp the front wheel with the front fork and lock the front wheel screw with a wrench.

Step 4: Manually install the left pedal by turning counterclockwise, and install the right pedal by turning clockwise. Tighten the pedal securely with a 15mm wrench. The pedals are marked with "R" (Right) and "L" (Left). The R pedal goes to the side of the carbon belt, and the L pedal goes to the other side.

Step 5: First, put the folding seat tube on the head tube, adjust it to a suitable angle, and tighten the screw with a No. 6 wrench.

Step 6: Fix the standpipe, put the handlebar in the appropriate position, and tighten the screw with a No. 5 wrench.

Step 7: Take the headlight out of the carton. Align the installation position. The fixing piece shall be inserted into the mounting hole. Align the screwhole, and then insert the screw to tighten it. Tighten with screws in the sequence shown in the figure.

Step 8: Push the saddle down and then forward to complete the installation. The screws and gaskets shall be installed according to the picture.

Step 9: Fill up the air with the hand pump before riding.

Display Guide

Function Overview

The Display provides a variety of functions to meet your riding needs, including:

Buttons Functions

Name Functions
[Power] 1. Power on/off
[+] 1. Parameter adjustment
2. Menu operation
[-] 1. Parameter adjustment
2. Pedestrian mode on/off
3. Menu operation
[Light] 1. Light on/off
[i] 1. Parameters confirm
2. Long press -> Change mode

Riding Interface

The display shows:

Mode Switch

Press and hold the [i] key for 1s to switch between ECO, NORMAL, and SPORT modes.

Note on SPORT Mode: The switch to SPORT mode is activated when the speed exceeds 15km/h. The maximum continuous use of SPORT mode is 3 minutes. After the 3-minute period, the mode automatically switches to NORMAL and is frozen for 10 minutes before SPORT mode can be reactivated.

Error Codes

Common error codes are listed below (for reference, depending on other electrical parts of the e-bike):

KM5S protocol Error Code Meaning
21 Current or Mos Error
22 Throttle Error
23 Motor Phase Error
24 Motor Hall Error
25 Brake Error
26 Low-voltage protection
40 Communication Error

User Menu

To enter the user menu, long-press the [+] and [-] buttons simultaneously for 1 second while the bike is static. The interface will automatically return to the riding interface if there is no operation for more than 60 seconds.

Clear Data

In the "Clear Data" menu, select "Trip Distance". Use [+] / [-] to switch between "Yes" and "No" (default is "No"). Press [i] to confirm and return to the previous menu.

Note: Clearing trip data also clears:

Factory Reset

In the "Clear Data" menu, select "Factory Reset". Use [+] / [-] to switch between "Yes" and "No" (default is "No"). Press [i] to confirm and return to the previous menu. After a factory reset, some functions may need to be restarted to take effect.

Set Unit

Select "Set Unit" and press [i] to enter the submenu. Select "Set Unit" again, press [i] to enter, and use [+] / [-] to switch between units (e.g., Metric - Km, Imperial - Mile). Press [i] to confirm and return to the previous menu.

Auto Power-Off

Select "Auto Power-off" and press [i] to enter the submenu. The adjustment range is 0-99 minutes (0 means never auto power-off). Press [i] to confirm and return to the previous menu.

Set Brightness

Select "Set Brightness" and press [i] to enter the submenu. The adjustment range is Auto, 1-5. Press [i] to confirm and return to the previous menu.

Speed Limit

Select "Speed Limit" and press [i] to enter the submenu. The adjustment range is 22-50km/h. Press [i] to confirm and return to the previous menu.

Personalization

Press [i] to enter the "Personalization" menu. Here you can set Cruise Control (CRU), Reverse Charging Current (ACF), Auto Headlight, and Assist Level PWM (Power Set). CRU and ACF are available only for specific e-bikes.

System Info

Select "System Info" and press [i] to check the version information. Press [i] to return to the previous menu.

Your First Ride

Important Note: Please be VERY CAREFUL when riding your e-bike for the first time. E-bikes move significantly faster than regular bicycles, especially in active power-assisted mode. Choose an area with plenty of open space for your initial rides. It is recommended to start with pedal assist turned OFF to familiarize yourself with the braking and gear shifting. Gradually test the pedal assist levels to find the optimal settings for your riding style.

Safety Checks Before Every Ride

Operating Your New e-Bike

To turn on the bike: Press the power button on the left handlebar until the display lights up.

To start riding: Ride the bike and twist the throttle bar or pedal. The bike will move. You can change the power level using the control buttons. Level 1 is the slowest, and Level 5 is the fastest. Level 0 is the human-powered mode.

Other Functions

Hand Throttle Control: In hand throttle mode, the amount of power assist is controlled by twisting the throttle. The further you twist, the more power is delivered to the motor. To slow down, release the throttle and apply the brakes if necessary. You do not need to pedal when using the hand throttle, but pedaling can help conserve energy and extend battery life.

Security and Warnings

Before Riding the e-BIKE

Always perform a mechanical inspection before riding:

When Riding the e-Bike

Situations to Avoid

Off-road Riding

Riding in the Rain

Riding at Night

Extreme and Aggressive Riding

Electric bike designs have limitations. Extreme, stunt, and competition riding may exceed these limits and is not recommended by the manufacturer. Such activities increase the risk of death and serious injury.

Battery and Maintenance

Charging Your e-Bike Battery

  1. Open the cover of the charging port and fold the bicycle.
  2. Insert the key into the battery, hold it down, and turn clockwise until it is fully inserted (the lock lever should be completely retracted).
  3. Carefully slide off the battery.

Battery Charging Information

Tips for Increasing Range

The bike's range varies based on rider, terrain, wind, user input, and cargo weight. To maximize range:

Battery Recycling

Dispose of used batteries according to state and federal regulations. Lithium-ion batteries cannot be placed in standard trash cans.

Recommended Maintenance Interval

Regular inspection and maintenance are crucial for performance and longevity. The suggested intervals are for guidance only; actual needs may vary.

Interval Inspect Service Replace
Weekly, 160-321km (100-200mi) Check hardware for proper torque.
Check drivetrain for proper alignment and function (chain, cassette, sprockets, derailleurs).
Wipe the frame with a damp cloth.
Use barrel adjusters to tension the derailleur/brake cables if needed.
Replace any component confirmed by Engwe Bikes Product Support to be damaged.
Monthly, 402-1207km (250-750mi) Check the correctness of the wheels and quiet wheel operation (no spoke noise).
Check the condition of the frame for any damage.
Check brake pad alignment and brake cable tension.
Check that the crankset and bike moves pedal torque correctly.
Check proper derailleur tension.
Check chain tension.
Check cables and housings.
Clean and lubricate the drivetrain, brake and shift cables.
Clean the spokes.
Replace brake pads if necessary.
Replace shift cables if necessary.
Replace brake pads if necessary.
Every 6 months, 1207-2011km (750-1250mi) Check the drivetrain (chain, sprockets, freewheel, and derailleur).
Check all cables and housings.
Tuned by certified standards, well-respected bike mechanics.
Lubricate the bottom bracket.
Replace the brake pads if necessary.
Replace tires if necessary.

Troubleshooting

Phenomena Cause of Failure Solutions
Cannot turn on the e-bike Battery is off
The Battery is out of power
Battery aging or damaged
Poor contact with the display line
Failure of computer
Failure of the controller
Turn on the battery
Fully charge the battery
Replace the battery
Reconnect the display
Replace the computer
Replace the controller
Pedal assist doesn't work Failure of the speed sensor Replace the speed sensor
Gear doesn't work well Rear derailleur mismatch Adjust the rear derailleur
Brake doesn't work well Brake caliper mismatch
Brake Disc is bent
Adjust brake caliper or disc
Display doesn't light on Poor contact with the display line Reconnect the display line
Cannot adjust the speed The battery's voltage is too low
The throttle governing bar is damaged
Speed is less than
Fully charge the battery
Replace the throttle governing bar
Replace the spring
10km/h Spring failure or being locked
Inadequate tire pressure
Inflate the tire with appropriate air pressure
E-Bike's mileage is inadequate after fully charged Failure of charger
The battery cannot be fully charged
Failure of the controller
Battery aging or battery damaged
E-Bike has not been well assembled
Too much upgrade road
Strong wind
Bad road
Overweight
Too many braking times
Temperature is too low
Repair the charger
Examine and repair the controller
Replace the controller
Replace the battery
Re-adjust the e-Bike
Boost the e-Bike by manpower
Warm the battery above 0°C (32°F)
The wheel hub stopped running after switching The connection of the battery is loosened
Poor contact of controlling line
The connection of the wheel hub is loose or damaged
The protective board of the battery is broken
Re-connect the battery
Replace the connection line
Replace the battery's protective board with a new one

Limited Warranty

This limited warranty covers the original owner of an electric bike purchased from Engwe online or in-store. The warranty period begins upon receipt of the e-bike and ends at the conclusion of the specified warranty period. It is not transferable to subsequent owners.

Accessories Quality Problem Warranty Period Service Content
Motor The motor will not be able to use 1 year Free delivery of parts
Accelerator Natural conditions (such as impact force cannot be used, except for damage) 1 year Free delivery of parts
Controller Failure occurs under normal use 1 year Free delivery of parts
Charger Failure occurs under normal use 1 year Free delivery of parts
Lithium Battery Can't charge under normal use 1 year Free delivery of parts

This Limited Warranty Does Not Cover:

Thank you for purchasing Engwe products! For warranty service, please visit the official website: https://engwe-bikes.com/ to view the full warranty policy.

For after-sales support, please contact Engwe customer service. Provide your order number, purchase interface, and videos of the issue.

Models: X20 750W Fat Tire Ebike, X20, 750W Fat Tire Ebike, Tire Ebike

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