BESV JTR User manual

BESV JTR
User Manual
Version: V.1.0

BESV JTR User Manual
Contents 1 |
Contents
Introduction .............................................................................................................................. 3
Welcome!........................................................................................................................................................3
What is a pedelec (a type of e-bike)? .............................................................................................................3
Intended Use ..................................................................................................................................................3
Product information .......................................................................................................................................3
Brand and Manufacturer Info.........................................................................................................................4
Environment Protection Tips ..........................................................................................................................4
Intended Use ..................................................................................................................................................4
User Manual ...................................................................................................................................................4
Symbols Used..........................................................................................................................................5
Support Information.......................................................................................................................................5
Copyright Information ....................................................................................................................................6
Before You Go............................................................................................................................... 7
Register your JTR ............................................................................................................................................7
Before your first ride ......................................................................................................................................7
Before every ride............................................................................................................................................7
Safety Notes....................................................................................................................................................8
BESV JTR At A Glance .................................................................................................................... 9
BESV JTR Bike Parts.........................................................................................................................................9
HMI (Human Machine Interface) Overview................................................................................................. 10
Smart Connectivity.......................................................................................................................11
Enhanced Ride............................................................................................................................................. 11
OTA (Over-the-Air) Firmware Update .......................................................................................................... 11
Detailed Bike Instructions ............................................................................................................12
Introducing HMI Functions.......................................................................................................................... 12
How to Turn On/Off the Battery Power .............................................................................................. 12
Pedal Assist Modes.............................................................................................................................. 12
Bluetooth Connection.......................................................................................................................... 13
Firmware Update Status Indicator ...................................................................................................... 13
Battery ......................................................................................................................................................... 15
Battery Level Indicator ........................................................................................................................ 15
How to Recharge the Battery .............................................................................................................. 15
Battery and Charger Precautions ........................................................................................................ 16
How to Shift Gears....................................................................................................................................... 18
Note on Brake System.................................................................................................................................. 18
Adjust the Seat............................................................................................................................................. 19
USB Type-C Charging Port............................................................................................................................ 20
Tire Pressure................................................................................................................................................ 21
Notes on Max. Allowable Weight and Rear Carrier..................................................................................... 21
Notes on Kickstand ...................................................................................................................................... 22
Other Safety Devices.................................................................................................................................... 22
Proper Accessories....................................................................................................................................... 22
Maintenance................................................................................................................................24
Notes on Cleaning........................................................................................................................................ 24
Maintenance Schedule and Guide............................................................................................................... 24
Additional Useful Information......................................................................................................25
Disposal and recycling Information ............................................................................................................. 25
Troubleshooting ......................................................................................................................26
Alert Signs.................................................................................................................................................... 26

BESV JTR User Manual
Contents 2 |
Warning Code Alert Signs.................................................................................................................... 26
Warning Codes............................................................................................................................................. 27
Error Codes .................................................................................................................................................. 29
Other Troubleshooting ................................................................................................................................ 33
Warranty .....................................................................................................................................37
Specifications...............................................................................................................................37

BESV JTR User Manual
Introduction 3 |
Introduction
Welcome!
Congratulations! You have just purchased the finest pedal-assisted electric bicycle in the market. We cannot
wait for you to start embarking on amazing journeys with your BESV e-bike!
What is a pedelec (a type of e-bike)?
A pedelec is an electrically assisted bike that provides assistance when and only when you pedal. The torque
sensor located on the pedal crank bearing detects how hard you are pedaling and determines how much
power the motor should provide to give you a pleasant ride. The electric motor is turned off as soon as you
stop pedaling.
In most countries, there are laws regarding pedelec design and the use of pedelecs. For example, the
maximum assisted speed is 25 km/hr (15.5 mph) in European countries. When you are reaching the maximum
assisted speed, the motor starts to reduce its power output until it ceases in order to meet the law
requirement. However, with pedal-assist function off, you may be able to surpass the maximum assisted speed
with your physical strength and agility.
Intended Use
For your safety and for avoiding damages to your bike, please make sure your pedelec is used according to its
intended use.
BESV JTR is designed to be a gravel pedelec. Please ride your bike under suitable conditions. If you have other
needs, such as downhill riding, please select other suitable bikes for your safety.
This pedelec is designed to be ridden by only one person (the rider) and does not permit carrying infant,
children or animals.
Pedelecs do not intend to limit the stature, perception, and mental ability of its user; however, a child under
14 years old is prohibited to ride the pedelec. (Please check your local laws; the minimum age may be higher.)
According to EN regulation the maximum gross weight of the e-bike, including the weight of rider, accessories
and/or cargo, is under 120 kg (264 lb). Do not exceed the allowable gross weight. It is also not designed to pull
or tow another bike, trailer, or any other items via a connection system.
Product information
Product description: Electric power assisted bike (E-Bike)
Model: JTR
Function: Pedelec
Equipped Battery Description:
Product: Battery for E-Bike
Model：E2C08
Equipped Battery Charger Description:
Product: Battery Charger for E-Bike
Model：B259-001

BESV JTR User Manual
Introduction 4 |
Brand and Manufacturer Info
BESV is a brand by Darad Innovation Corporation, a company based in Taiwan. We are committed to
developing products that feature innovative ideas and structures.
Environment Protection Tips
Environmental protection topics are part of the Green Product Policy published by Darfon Electronics Corp.,
Darad Innovation Corporation's parent company. The purpose is to encourage cautious use of natural
resources, which are the building blocks of the planet we live on, and to take the needs of nature and human
beings into consideration. As a responsible person for environmental protection, you may protect the
environment by starting to ride an electric bike.
The consumption of energy is related to the power controller system, gear change system, brake system, drive
system and tires installed on the bike. It all depends on how the electric bike is used and how you ride the
bike. BESV invites you to join us and make effort to help protect our planet Earth, by learning how to ride
responsibly and conserve energy whenever necessary.
Intended Use
For your safety and for avoiding damages to your bike, please make sure your pedelec is used according to its
intended use.
BESV JTR is designed to be a gravel pedelec. Please ride your bike under suitable conditions. If you have other
needs, such as downhill riding, please select other suitable bikes for your safety.
This pedelec is designed to be ridden by only one person (the rider) and does not permit carrying infant,
children or animals.
Pedelecs do not intend to limit the stature, perception, and mental ability of its user; however, a child under
14 years old is prohibited to ride the pedelec. (Please check your local laws; the minimum age may be higher.)
According to EN regulation the maximum gross weight of the e-bike, including the weight of rider, accessories
and/or cargo, is under 120 kg (264 lb). Do not exceed the allowable gross weight. It is also not designed to pull
or tow another bike, trailer, or any other items via a connection system.
User Manual
This user manual provides you quick and accurate understanding of the major functions of your e-bike.
Please read this user manual thoroughly and familiarize yourself with the operations of the e-bike before
riding it for the first time. Please be aware of where you can find this manual and keep it accessible at all
times.
Please follow the instructions and warnings provided in this manual. Failure to do so may lead to damages to
the bike or threats to your personal safety. The manufacturer accepts no liability for damages resulting from
non-compliance with these instructions. Please note that your pedelec must only be used in accordance with
its intended use.
If you are to lend or to sell your e-bike to another person, please pass this manual onto him/her.

BESV JTR User Manual
Introduction 5 |
TIP
Your bike may be somewhat different from the descriptions and images depending on model, order, country
or optional accessories. Darad Innovation Corp. is committed to constant innovation of craftsmanship and
products. We reserve the rights to changes in designs, electronic systems, and features to our equipment or
technology.
This e-bike model and user manual’s details are subject to change without prior notice. Please always follow
manufacturer’s latest explanations. Should you have any question or concern, please do not hesitate to
contact us!
Symbols Used
The following symbols are used in this manual to highlight important information. Please find symbol
descriptions below:
DANGER
Failure to follow this part of instructions will result in death or serious injury.
WARNING
Failure to follow this part of instructions could result in death or serious injury.
CAUTION
Failure to follow this part of the instructions could result in minor or moderate
injury.
NOTICE
This symbol highlights actions users should follow. These parts in this manual
are particularly important.
“TIP” provides useful information, which may help you further understand e-
bikes and the importance of certain instructions.
Support Information
Whenever you need professional support, please don’t hesitate to contact us!
Official Website: www.besv.com (May be auto-redirected to regional site. Manual selection is also available.)
E-mail: [e-mail] (Headquarter/Taiwan); [e-mail] (EU)
Headquarter’s Address: 1 F., No. 167, Shanying Rd., Guishan Dist., Taoyuan City 333426, Taiwan (R.O.C.)
DARAD Innovation Corp. recommends that you go to an authorized professional distributor for service and
repair in order to keep your electric bike in a good working condition.
An authorized distributor has the skills, tools and qualification to provide service for your electric bike, in
particular when it comes to the safety of riding the bike.
Please do not hesitate to reach out to our authorized distributors/dealers for the following services:
• Safety-related service

BESV JTR User Manual
Introduction 6 |
• Maintenance and service
• Repair
• Correction, installation and upgrade
• Replacement of electronic components: power controller system, gear change system, brake system and
drive system
Copyright Information
Copyright © 2023 Darad Innovation Corp. All rights reserved.
No part or all of the content of this user manual may be used, modified, reproduced, transformed, distributed,
published, translated, publicly displayed or distributed in any way to any other computer, server, website,
media related to publication or any third party without the company's prior written consent.

BESV JTR User Manual
Before You Go 7 |
Before You Go
Register your JTR
Your e-bike is only half the experience! To get the most out of your BESV JTR, make sure you download our
BESV Smart Plus app. It’s easy to create an account and register your e-bike.
When your e-bike is paired with our app there are additional features that are unlocked and you have the
ability to customize the e-bike to your personal needs and preferences.
Apple and the Apple logo are trademarks of Apple Inc.
Google Play and the Google Play logo are trademarks of Google LLC.
More about using the app, please check out the “Smart Connection” section later in the manual.
Before your first ride
NOTICE
Please check the following:
•Ensure the JTR is fully assembled according to instructions and adjusted to fit your body.
•Familiarize yourself with JTR’s functions and how the bike should be used.
•Ensure you know which lever operates which brake. Practice and get used to operating the
brakes in a safe area.
•Note that electric bikes potentially travel faster than a typical bike, be mindful of the
reaction time and distance that you might need when using this particular bike.
•Lift your JTR up slightly and drop it onto the ground from about 10 cm in the air. If you hear
any sort of rattling or unusual noise, consult a professional to identify and fix the problem
before you use it.
•Ensure to check all of the “Before Every Ride” checklist.
Before every ride
NOTICE
Please check the following:
•Check if all parts of the JTR are undamaged and can function properly.

BESV JTR User Manual
Before You Go 8 |
•Check all bolted and connecting parts of the bike are secured in place.
•Test ride to check if there is any abnormal noise from your e-bike.
•Check that the brake pads are not overly worn; and ensure the brake system is working
properly.
•Test to see if you can pedal smoothly.
•Check if the transmission system allows you to shift gears smoothly.
•Make sure saddle height adjustment does not exceed the minimum seat post insertion
depth requirement.
•Make sure tire pressure is within recommended range and the pressure is not dropping
abnormally; as well as the tire tread depths are sufficient.
•Check if the battery has enough capacity for your ride.
•Check if the electric system and integrated display are working properly.
•If you find anything to be abnormal, please refrain from riding and contact our service
center or authorized professional distributor for assistance.
Safety Notes
WARNING
•For your safety, it is essential to wear a helmet while riding.
•Avoid excessive attention to the HMI display while riding to prevent accidents.
•Do not use earphones, headphones, or make/receive phone calls while riding.
•Avoid riding barefoot or wearing flip-flops, as it increases the risk of accidents due to loose
footwear or improper pedaling, which may result in serious injury or death.
•Maintain focus at all times while riding.
•The control of front and rear brakes (corresponding to the left or right brake lever) may
vary according to each country's regulations. Before riding on the road, ensure that you are
familiar with and understand the brake controls.
•Pay attention to the road surface and condition while riding and respond and operate the
brake accordingly.
•There is a risk of burns if you touch brake components directly with your skin before they
have cooled down.
•When using the motor continuously for an extended period, avoid touching the motor as
its surface temperature may cause burns.

BESV JTR User Manual
BESV JTR At A Glance 9 |
BESV JTR At A Glance
BESV JTR Bike Parts
1. HMI (Human Machine Interface)
2. Flat Handlebar
3. Headlight
4. Integrated Battery
5. Disc Brake Rotors
6. Alloy Front Fork
7. Charging Port
8. Seatpost Clamp
9. Rear Carrier
10. Rear Light
11. Fender
12. Hub Motor
13. Rear Derailleur
14. Brake Lever
15. Shifter Indicator
16. Shift Levers

BESV JTR User Manual
BESV JTR At A Glance 10 |
HMI (Human Machine Interface) Overview

BESV JTR User Manual
Smart Connectivity 11 |
Smart Connectivity
Enhanced Ride
With wireless connectivity and its app companion “BESV Smart Plus" app, you can unlock features that
traditional bikes could only dream of.
Find your bike, plan your routes, have essential ride data right at your fingertips through the dashboard,
monitor your battery in real-time, customize settings to match your style and needs, and stay informed with
its self-diagnostic feature, be guided with troubleshooting instructions and more—navigate and manage at
ease like never before!
OTA (Over-the-Air) Firmware Update
To continuously enhance our design and your product experience, we may occasionally update the firmware
of your e-bike’s electronic components.
JTR allows users to perform wireless firmware updates through our BESV Smart Plus App.
Please follow the app instructions or refer to the App user manual for more detailed instructions.

BESV JTR User Manual
Detailed Bike Instructions 12 |
Detailed Bike Instructions
Introducing HMI Functions
How to Turn On/Off the Battery Power
Please make sure that the battery has enough capacity.
Pedal Assist Modes
When the power is turned on, press the power button to switch power modes.
With Smart Mode ON, your JTR adjusts pedal assist power instantaneously and seamlessly. Our electronic
transmission has the latest technology to improve efficiency and function.
NOTICE
While riding the bike, modes will not be able to switch to “0 (No Assist)” and will only loop from
1~3 (Eco-Smart-Power).
Only when the bike is stationary, may you switch amongst all (0~3) modes.
To turn ON
Long press
To turn OFF
Long press and then release
Order of Assist Modes When Shifting
0
Light OFF
No Assist
1
Blue Light
Eco Mode
2
Purple Light
Smart Mode
3
Red Light
Power Mode

BESV JTR User Manual
Detailed Bike Instructions 13 |
Bluetooth Connection
Every time your app and bike attempts to establish connection, the 5 lights on the HMI will reflect on this
action.
The lights will cycle through the following states thrice.
The attempt may or may not be successful, please refer to your app to see whether connection is successfully
established.
Firmware Update Status Indicator
To ensure that you have the best experience with your JTR, BESV may release firmware updates as needed.
When a new update is available, the app will send a notification, and we recommend updating your firmware
as soon as possible to keep your JTR running at its best.
During the firmware update process, the 5 lights on the HMI will act as a status indicator, cycling through the
following states until the update is complete:

BESV JTR User Manual
Detailed Bike Instructions 14 |
CAUTION
When firmware is updating:
1. Please do not close the app.
2. Please do not attempt to turn off the e-bike’s power, which could result in unexpected error.
3. Please do not turn off cellphone’s Bluetooth function, and keep a close and unobstructed
distance from the e-bike (recommended distance would be less than 3 meters).
When firmware update process is disconnected, resulting in failed update, you would need to
restart the process over.

BESV JTR User Manual
Detailed Bike Instructions 15 |
Battery
Battery Level Indicator
How to Recharge the Battery
JTR has integrated battery. Please correctly connect the charger to the battery port to recharge.
Acceptable charger input voltage: 100V~240V
While charging, HMI and Charger’s LED Indicators blink to reflect battery capacity changes.

BESV JTR User Manual
Detailed Bike Instructions 16 |
NOTICE
If the charger LED blinks orange, check:
- Power outlet's voltage output is normal.
- Plugs are correctly connected.
- Battery is functional.
- Charger is not broken, wet, or obstructed by foreign objects.
If you cannot identify any visible problem or if you are unsure of the issue, please contact our
customer service centre or authorized service personnel.
If not in use: We recommend that the battery be recharged fully at least once every month.
Battery and Charger Precautions
DANGER
•If the charger cable, plug or the outlet is damaged, wet, or dirty, there is a risk of electric
shock, which could be fatal. Under such conditions, please do not touch the items with bare
hands and seek help from professionals.
WARNING
•Use only the battery charger delivered with the product. Using any other charger could
damage both the battery and charger, may cause overheating of the battery or even
explosion.
•Do not submerge the e-bike in water. There are risks of electric shock or damage to the
battery.
•Only use undamaged power cable and charger in dry state.
•Please protect your equipment from humidity to avoid corrosion. Please store your e-bike in
a dry environment.
•Do not expose the bike to temperatures lower than -20°C (-4°F) or higher than 55°C (113°F).
Please note that the internal structure of the battery may be overheated and result in
damages due to high temperatures greater than 60°C, particularly exposed to direct sunlight.
•The battery's operational temperature range for discharge is from -10°C (14°F) to 55°C
(131°F).
•Do not use the charger to recharge the bike in a humid space. Please recharge at an ambient
temperature between 5°C (41°F)~40°C (104°F).
•Please store the charger within -20°C(-4°F) and 65°C (149°F) 。

BESV JTR User Manual
Detailed Bike Instructions 17 |
•For safety reasons, please do not disassemble any bike parts to avoid electric shocks or bike
part damages. Only qualified service personnel should disassemble the bike.
•Do not expose the battery to high voltage.
•There is a fire risk if the temperature of the battery rises up to a dangerous level. Please use
the bike within its allowable operation and storage range, and refrain from using the bike if
there is any temperature concern.
•The battery and charger should be placed on a fire-retardant surface and stay away from
inflammable items when charging is in progress. Do not charge the battery while it is on a
carpeted floor.
•Please do not store the battery near combustible items.
•Do not cover the battery and/or the charger during charging. There is a risk of overheating,
fire, or explosion.
CAUTION
•When battery is being recharged, please refrain from moving the e-bike. Please do not step
on or move the pedals.
•Take precautions to prevent significant impacts on the battery, as it could result in dangerous
consequences if subjected to forceful collisions.
•Remove any possible foreign object from the charging socket, such as dust, ice, or snow
before plugging in.
•Deep discharging of the battery may result in internal damage. Avoid deep discharging of
battery while in use or storage.
•Please ensure that children should not handle e-bike or chargers without adult's supervision.
•If you detect that the battery becomes very hot, emits a strong odor, starts to deform or
performs in an unexpected way while in use, being charged or in storage, please stop using
the battery immediately.
•Replace damaged power cable and charger immediately.
•Please handle the battery with both hands, avoid dropping the battery and damaging it.
•Avoid letting the battery experience sudden temperature changes.
NOTICE
•Please read all the instructions and warnings labels thoroughly before using the charger and
battery.
•If not in use, the battery should be charged fully at least once every month.
•After charging, if not in use, unplug the charger from the e-bike.
•Once done charging, please disconnect the AC plug from the outlet before unplugging the DC
power cord from the battery.
•Please always disconnect equipment from the power supply before maintenance or repair.

BESV JTR User Manual
Detailed Bike Instructions 18 |
How to Shift Gears
Push or pull this lever to shift to a
heavier gear (pedaling becomes
heavier).
*You may shift one to two gears at once, depending on the distance the lever moves.
Note on Brake System
At all times, especially when the pedal assist is enabled on an e-bike, it is important to constantly be aware of
your riding speed and know of the braking force and response time required at that speed.
The corresponding break levers of the front and rear brakes vary according to each country's regulations.
Therefore, it is important to be attentive and familiarize yourself with the brake controls before you ride for
the first time.
It is recommended to use both hands to apply pressure on the brake levers simultaneously and
brake using a progressive motion.
WARNING
Emergency braking (applying strong force to the brake lever at once) can potentially cause your
bicycle to overturn. It is recommended to brake progressively, taking into account the overall
situation.
Push this lever to shift to a lighter gear
(pedaling becomes lighter).
TIP

BESV JTR User Manual
Detailed Bike Instructions 19 |
When riding, pay attention to the road surface material and condition, such as wet or slippery
surfaces, as they can reduce the tire's grip. Adjust your braking distance and control the braking
force accordingly.
Avoid continuous braking as it can increase the temperature at the friction points. Overheating
can lead to brake failure, thereby increasing the risk of accidents and injuries.
Additional precautions to consider:
•There is a risk of burns if you touch brake components before they have cooled down.
•Do not place your hand or any body part between the brake pads and the wheel. Be
cautious not to accidentally press the brakes, as it can cause injury. When children are
playing, they should avoid touching the brake components to prevent injuries.
•Avoid oils or lubricants from coming in contact with brake pads, as those can reduce brake
efficiency.
•Monitor the wear level of the brake pads. Excessive wear can affect braking performance, so
timely replacement is necessary.
Before riding on the road, it is important to practice and become familiar with the braking action and braking
force of the JTR. For your safety, become confident in operating the brakes before venturing out onto the road.
Adjust the Seat
Adjusting the saddle to your height will enhance your control and provide a more comfortable riding
experience on JTR.
1. Use 5mm Hex Key and turn counterclockwise
to loosen the clamp.
2. Adjust the seatpost (saddle height).
3. Turn the key clockwise (4-6 Nm) to tighten the
clamp.
NOTICE
Position the saddle directly facing forward. After adjusting the height, ensure that the
seatpost is securely locked (the saddle should be unable to rotate) to ensure a stable riding
experience.