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ENGWE L20 BOOST Manual
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ENGWE L20 BOOST Manual

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L20 BOOST
CAUTION READ THIS MANUAL BEFORE USING YOUR EQUIPMENT

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June 9, 2025

How do you change the brightness of the screen, its hardly visible

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Summary of Contents for ENGWE L20 BOOST

  • Page 1 L20 BOOST CAUTION READ THIS MANUAL BEFORE USING YOUR EQUIPMENT...
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of contents 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...

  • Page 4: Lmportant Warning

    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.

  • Page 5: Product Components

    2.Product Components Battery Chain Crank set...
  • Page 6 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.

  • Page 7: Technical Parameters

    3.Technical Parameters Performance index Project Vehicle Size 1737*700*1140mm Wheel Size 20Inches Basic Parameters Body Material Aluminium alloy Maximum Load 120KG E-bike Weight 34KG Maximum Speed 25km/h Maximum Gradient 10° Rear Derailleur 7-Speed Main Parameters Mileage Range 85km of the Whole E-bike Working -5 ~35 Temperature...

  • Page 8: Product Installation

    4.Product Installation L20 BOOST CAUTION READ THIS MANUAL BEFORE USING YOUR EQUIPMENT...

  • Page 9: Install The Handlebar

    4.1 Install The Handlebar （1）Remove the handlebars to remove the packing material and place the center at the riser clamlet. （2）Install 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.

  • Page 10: Install The Front Wheel

    4.2 Install The Front Wheel （1）Remove the front wheel to remove the packing material, and install the screw gasket shaft sleeve according to the drawing. （2）Place the front wheel in the front fork card slot and lock it with a 15mm wrench.

  • Page 11: Install The Front Mudguard

    4.3 Install The Front Mudguard （1）The 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. （2）The mudguard support shall be aligned with the front fork mudguard take-up hole position,and then threaded into the screw for tightening.

  • Page 12: Install The Front Basket

    4.4 Install The Front Basket （1）Remove the basket to remove the packaging material, and install the screw gasket according to the drawing. （2）Install 4 bolts clockwise using a 4mm hexagon wrench, and place the harness in the front shelf hook.

  • Page 13: Install The Front Light

    4.5 Install The Front Light （1）Install the headlight screw washer nut according to the drawing. （2）The headlight line is fixed as shown in the figure.

  • Page 14: Install The Pedals

    4.6 Install The Pedals （1）Prepare left and right pedal，The pedal“R”is installed on one side of the chainring, and "L" is opposite to the chainring. Left Right （2）Tighten the right pedal “R” clockwise, Tighten the left pedal “L” counterclockwise.

  • Page 15: Display Instructions

    5.Display Instructions 1.Product name and model name Intelligent LCD display for e-bike; model: YL61F-D. 2.Specifications ～60℃ ～70℃ 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))
  • Page 16 Display Instructions 4.2 Functional area layout Battery level Light ON/OFF Speed Metric: KM/H Speed Imperial MPH Error PAS level Walk boost Odometer Value and unit Trip Odometer Max speed Average speed 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...
  • Page 17 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.
  • Page 18 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 again to make the controller turn off the lights and the backlight restore brightness. 5.5 Assist level selection Press to switch PAS level of electric bicycle, thus changing the motor output power.
  • Page 19 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 YL-02 Error codes Error code Definition...

  • Page 20: Battery

    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...

  • Page 21: Charging

    7.Charging time is 4-6 hours depends on the battery capacity remain. WARNING: 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.

  • Page 22: Warranty Policy

    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.