ENGWE L20 Boost 75Nm High Torque Electric Fat Bike Instruction Manual
- August 31, 2024
- ENGWE
Table of Contents
L20 Boost 75Nm High Torque Electric Fat Bike
Specifications
- Vehicle Size: 17377001140mm
- Wheel Size: 20 Inches
- Body Material: -5 ~35
- Maximum Load: 48V 13AH
- E-bike Weight: 250W
- Maximum Speed: Brushless Gear Motor
- Maximum Gradient: 100-240v
- Rear Derailleur Mileage Range: 54.6V
- Working Temperature: 2A
Product Usage Instructions
1. Important Warning
Make sure to read and understand all safety guidelines provided
in the manual before using the E-Bike.
2. Product Components
The product components include a Boost button (B button) for
power enhancement during pedal-assist riding.
3. Technical Parameters
The technical parameters cover various aspects such as vehicle
size, wheel size, battery parameters, motor parameters, and charger
parameters.
4. Product Installation
4.1 Install The Handlebar
Follow the instructions provided to correctly install the
handlebar using a 4mm hexagon wrench.
4.2 Install The Front Wheel
Properly install the front wheel by following the steps outlined
in the manual and using a 15mm wrench to secure it.
4.3 Install The Front Mudguard
Securely attach the front mudguard using the lifting lug and
aligning the mudguard support with the front fork mudguard take-up
hole.
4.4 Install The Front Basket
Install the front basket by following the provided instructions
and using a 4mm hexagon wrench for the bolts.
4.5 Install The Front Light
Install the front light according to the drawing and secure the
headlight line as shown in the figure.
4.6 Install The Pedals
Prepare the left and right pedals and install them correctly on
each side of the chainring as per the manual.
FAQ
Q: How long does the power enhancement effect of the Boost
button last?
A: The power enhancement effect of a single operation lasts up
to 60 seconds. If you need to increase power after 60 seconds,
release the B button and press it again.
Q: When can I use the Boost button?
A: Use the Boost button while riding with pedal assist to
increase power, ensuring to comply with local traffic regulations
for safety.
L20 BOOST
CAUTION READ THIS MANUAL BEFORE USING YOUR EQUIPMENT
Safety Guidelines for E-Bike Usage
Thank you for choosing the ENGWE series product.To ensure a quick and safe
riding experience, please famliarize yourself with this manual. Thecompany
reserves the right to interpret and explain this manual.
1. Before using this product, ensure the rider has read the manual 2. lt is
your responsibility to be aware of and comply with the laws in your area. 3.
Before riding, thoroughly check that all components are in good condition to
ensure safety. lfyou find any problems, please contact us in a timely manner.
4.Ensure the rider wears ahelmet and other protective gear, 5, Minors need to
use this product leaally in accordance with local regulations 6.Minors must
have parental approval and supervision to use this product. 7. Riders must:not
be under the influence of alcohol or drugs. 8. Do not operate the bike if the
rider is unable to engage in strenuous activities due to illness. 9. Avoid
riding in extreme weather conditions or when excessively fatigued. 10. While
the bike is suitable for rain or snow, avoid water contact near the motor
center to prevent damage to the internal circuitry. 11. Do not charge or park
the bike indoors. Keep charging away from flammable materials, and avoid
excessively long charcing times. 12. Do not touch battery discharge components
with hands, Avoid metal contact with battery electrodes and the bike circuit
to prevent short circuits 13. Use the original charger for battery charging.
Do not use the bike’s battery for other devices to prevent damage. 14.Avoid
using non-original parts, Unauthorized disassembly,cracking, or modiication
ofthe product and its components is prohibited. and anvresulting damage or
loss is vour responsibility, 15. Regularly maintain brakes, tires, and other
moving parts for proper bike functionality. 16. Services outside the warranty
scope may require payment for maintenance and related services.
Thank you again for choosing and trusting our product.
1.lmportant warning 2.Product components 3.Technical parameters 4.Product installation 4.1 Install the handlebar 4.2 Install the front wheel 4.3 Install the front mudguard 4.4 Install the front basket 4.5 Install the front light 4.6 Install the pedals 5.Display instructions 6.Battery 7.Charging 8.Warranty policy
Table of contents
1 2 4 5 6 7 8 9 10 11 12 17 18 19
1.lmportant warning
This manual include important safety performance informatlon and service
informatlon.Please make sure you have read the following warning content
before the first time you use our product. lf you borrow your electric bicycle
to other people, please let the user read this manual, it could help to
decrease the risk of accident. Please wear a suitable and safe helmet before
riding, please wear the clothes with fluores-cent and reflective stripes when
you ride at night.Don’t exceed speed limit, it is a main reason of traffic
accident, we should abide by the traffic rule, we shouldn’t exceed the speed
limit. Don’t touch the charging hole on the bike, or use metal touch it,
otherwise, the accident will be caused by the transient short circuit of the
current. Zero starting, braking frequent, driving against the wind, carrying
people or anything;insufficient air pressure on the tires. All of these will
use much electric energy, and thenreduce the endurance mileage. lf you want
the best endurance mileage, please do something as follows : 1) Please use
assist mode; 2) On the premise of safety, don’t brake frequently or use zero
starting. 3) Don’t overload; 4) Before riding, please check the pressure of
the tire and supply enough pressure. Our Ebike should avoid prolonged exposure
to the sun or rain, avoid storage in places with high temperature or corrosive
gas, so as to avoid electroplating parts and paint surface by chemical
corrosion and electrical parts damage, resulting in operational failure and
accidents. Your current insurance business may not cover the situation you may
encounter when riding an electric bike, please contact your insurance company
or insurance broker forrelevant consultation. If you use our ebike in your
country, pls refer to the local laws and regulation. For example in China,
riding an electric bicycle must reach the age of 16. Bicycles are vehicles
with certain risk fact factor, please be sure to abide by the traffic rules.
At the same time, when emergency braking, brake the rear wheel first, then
brake the frontwheel, when cycling speed is too fast. There is a danger of
tipping over if you brake the frontwheel suddenly, please ride carefully.
1
Battery
Chain Crank set
2.Product Components 2
Product Components
Boost button (B button) Boost button (B button) operation instructions: Press
the B button while you riding with pedal assist to increase power. The power
enhancement effect of a single operation lasts up to 60 seconds. If you need
to increase power after 60 seconds, release the B button and press the above
operation again. Note: 1. For safety reasons, please use it when local traffic
regulations allow. 2. The B button function does not work when riding with the
throttle. 3
3.Technical Parameters
Performance index Basic Parameters
Main Parameters of the Whole E-bike Battery Parameters Motor Parameters
Charger Parameters
Project
Vehicle Size Wheel Size Body Material Maximum Load E-bike Weight Maximum Speed
Maximum Gradient Rear Derailleur Mileage Range Working Temperature
Rated Voltage Battery Capacity Motor Power Motor Type Input Voltage Output
Voltage Output Current
EU
17377001140mm 20Inches
Aluminium alloy 120KG 34KG 25km/h 10° 7-Speed 85km
-5 ~35
48V 13AH 250W Brushless Gear Motor 100-240v 54.6V
2A
4
4.Product Installation
L20 BOOST
CAUTION READ THIS MANUAL BEFORE USING YOUR EQUIPMENT
5
c1Remove the handlebars to remove the packing material and place the center at the riser clamlet.
4.1 Install The Handlebar
c2Install 4mm hexagon wrench clockwise. Do not tighten the 4 bolts in FIG. A. Adjust the handle to the proper Angle in Fig. B, and then tighten the 4 bolts with proper force.
A
B
6
4.2 Install The Front Wheel c1Remove the front wheel to remove the packing
material, and install the screw gasket shaft sleeve according to the drawing.
c2Place the front wheel in the front fork card slot and lock it with a 15mm
wrench.
7
4.3 Install The Front Mudguard c1The lifting lug of the mud pan is connected
with the hole of the front fork axle pipe,and then threaded in the screw to
tighten it. c2The mudguard support shall be aligned with the front fork
mudguard take-up hole position,and then threaded into the screw for
tightening.
8
4.4 Install The Front Basket c1Remove the basket to remove the packaging
material, and install the screw gasket according to the drawing. c2Install 4
bolts clockwise using a 4mm hexagon wrench, and place the harness in the front
shelf hook.
9
c1Install the headlight screw washer nut according to the drawing. c2The headlight line is fixed as shown in the figure.
4.5 Install The Front Light 10
4.6 Install The Pedals c1Prepare left and right pedalThe pedal”R”is installed on one side of the chainring, and “L” is opposite to the chainring.
L
c2Tighten the right pedal “R” clockwise, Tighten the left pedal “L”
counterclockwise.
LR
Left
Right
11
1.Product name and model name Intelligent LCD display for e-bike; model:
YL61F-D. 2.Specifications
j60¥ j70¥ 3.Appearance and dimension 4.Function overview and functional areas
4.1 Function overview The YL61F-D display offers a variety of features to suit
your riding needs, including:
average speed (AVG))
5.Display Instructions 12
Display Instructions
4.2 Functional area layout Battery level
Speed Error PAS level Walk boost
Light ON/OFF
Speed Metric: KM/H Imperial MPH
Odometer Trip Odometer
Max speed Average speed
Value and unit
Figure 4-1 YL61F-D functional area distribution interface
4.3 Button definitions The YL61F-D display is equipped with three buttons on
the corresponding operating unit: power on/off
, plus , minus .
13
Display Instructions 5.1 Power on/off Long press to power on / off the
display. When the display is off, it will not use the battery power and the
leakage current is less than 1uA. The display will automatically shut off if
it is not used for more than 10 minutes. 5.2 Display interface switching When
the display is powered on, it will show the Current Speed (km/h) and Trip
Odometer (km) by default. Short press to switched cyclically between Trip
Odometer (km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).
5.3 Walk boost mode Long press and hold , the electric bicycle enters the walk
boost mode. The electric bicycles will travel at walking speed and the display
shows . Release the button to stop the power output immediately and restore to
the state before walk boost.
The walk boost mode can only be used when pushing the electric bicycle, please
do not use it while riding.
14
Display Instructions
5.4 Turning on/off lights Long press the to make the controller turn on the lights and the display backlight becomes dim. Long press turn off the lights and the backlight restore brightness.
again to make the controller
5.5 Assist level selection Press / to switch PAS level of electric bicycle,
thus changing the motor output power. 5.6 Battery level display The Battery
level is shown as 5 bars. When the battery is full charged, all of the 5 bars
lighten up. When the battery is fully depleted, the bar begin to flash,
warning the user to charge the battery as soon as possible.
Full power 4 bars power 3 bars power 2 bars power 1 bar power
Empty power flashing 15
Display Instructions
5.7 Error code indicator If there is a fault occurs in the electronic system
of the electric bicycle, the display will automatically show an error Code,
see Schedule 1 for a detailed definition of the error code.
Schedule 1 Error Code Definitions
Error code E001 E002 E003
YL-02 Error codes
Definition Controller failure Communication failure breakdown
Hall failure
Error code E004 E005 E006
Definition Throttle failure
Brake failure Motor phase failure
16
6.Battery average speeds can continuous longer travel range. WARNING: Beware
of chemical burns! And immediately stop using the damaged battery.
If the battery is completely empty, it may cause the battery to no longer
charge. Overheating or undercharging the battery may shorten battery life and
decrease product run time. IMPORTANT: BATTERY DISPOSAL
17
time is 4-6 hours depends on the battery capacity remain. WARNING:
7.Charging
the internal structure and protection board of the lithium battery. the
internal structure and protection board of the lithium battery. If the product
has problems with the following forms during the protection period, we will
provide customer service as part of the product quality guarantee.
18
8.Warranty Policy
Dear customer ! Thank you for purchasing ENGWE series products ! Warranty
service: Please enter into the official website https://engwe-bikes.com/ to
view the warranty policy of Engwe. After purchasing Engwe products, please
kindly contact Engwe after-sales service for help when there is a quality
issue, which means that you can contact customer service of the seller where
you buy your e-bike from. Please provide your order number, purchase
interface, videos of the issue.
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References
Read User Manual Online (PDF format)
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