ENGWE L20 3.0 Boost Electric Bike

1.1 Packing List

The package typically includes the following components:

• ? Main frame body
• ⚙️ Front wheel
• ⚙️ Rear wheel (with electric motor)
• ? Saddle
• ⬆️ Seat post
• ⬆️ Handlebar
• ⬆️ Handlebar stem
• ⚙️ Pedals (x2)
• ⚙️ Front fender
• ⚙️ Rear fender
• ? Rear luggage rack
• ? Front headlight
• ? Rear taillight
• ? Tools (e.g., Allen wrenches M4, M5, M6)
• ? Charger
• ? User Manual
• ? Air pump
• ⚙️ Kickstand

1.2 Component Description

Key components of the electric bike:

• ⬆️ Handlebar
• ? Front headlight
• ⚙️ Front suspension fork
• ⚙️ Front wheel
• ⚙️ Front fender
• ?️ Battery compartment
• ⚙️ Chain wheel
• ⚙️ Crank
• ⚙️ Pedals
• ? Saddle
• ⬆️ Seat post
• ⚙️ Rear brake
• ⚙️ Electric machine (rear hub motor)
• ⚙️ Rear derailleur
• ? Chain
• ⚙️ Rear fender
• ? Rear luggage rack
• ? Rear taillight
• ⚙️ Kickstand

1.3 Description of Functions

Handlebar and display functions:

• ? Front light button: Press and hold to turn the front light on/off.
• ? Horn button: Press to sound the horn.
• ⚙️ Boost button: Press to activate boost mode for extra power.
• ⚙️ Mode/Power button: Press to turn the display on/off. Short press to cycle through assist levels (P0, P1, P2, P3).
• ⬆️ Up button: Increase assist level or adjust settings.
• ⬇️ Down button: Decrease assist level or adjust settings.
• ⚡ Battery indicator: Shows remaining battery level.
• ?️ Speed display: Shows current speed.
• ? Assist level indicator: Shows the current power assist level (P0-P3).
• ⚙️ Motor status indicator: Shows if the motor is active.
• ? Light indicator: Shows if the lights are on.
• ➡️ Turn signal indicator (if applicable): Shows active turn signal.

Common Function Descriptions:

• Assist Levels (P0-P3): P0 is no assist, P1 is low assist, P2 is medium assist, P3 is high assist.
• Boost Button: Provides maximum power for short bursts, useful for inclines or quick acceleration.
• Display: Shows speed, battery level, assist level, and other relevant information.
• Lights: Integrated front and rear lights for visibility.
• Brakes: Front and rear brakes for safe stopping.

2.1.1 Installation - Warning

Maximum Load: 150 KG. Ensure the total weight of the rider and cargo does not exceed this limit.

2.1.2 Unpacking

Carefully unpack all components from the box. Check against the packing list to ensure all parts are present and undamaged.

1. Step 1: Remove the main frame from the packaging.
2. Step 2: Remove all other components and accessories.

2.1.3 Installation - Cockpit

This section describes installing the handlebar and stem.

1. Step 1: Insert the handlebar stem into the head tube of the frame.
2. Step 2: Align the stem with the front wheel.
3. Step 3: Secure the stem using the provided M5 screws. Tighten them evenly. Torque: 12-15 Nm.
4. Step 4: Attach the handlebar to the stem.
5. Step 5: Secure the handlebar using the provided M5 screws. Torque: 12-15 Nm.
6. Step 6: Ensure the handlebar is straight and securely fastened before riding.

Note: Tightening screws in a cross pattern ensures even pressure. Do not overtighten.

2.1.4 Installation - Front Fender and Kickstand

Install the front fender and kickstand.

1. Step 1: Attach the front fender to the fork using the provided screws.
2. Step 2: Secure the fender firmly.
3. Step 3: Attach the kickstand to the designated mounting point on the frame using the provided M5 screws. Torque: 12-15 Nm.

2.1.5 Installation - Wheels

Install the front and rear wheels.

1. Step 1: Mount the front wheel into the fork dropouts.
2. Step 2: Secure the front wheel using the quick-release skewer or axle nuts. Ensure it is centered and tight. Torque for axle nuts: 25-30 Nm.
3. Step 3: Mount the rear wheel into the frame dropouts. Ensure the motor cable is routed correctly.
4. Step 4: Secure the rear wheel using the quick-release skewer or axle nuts. Ensure it is centered and tight. Torque for axle nuts: 25-30 Nm.

2.1.6 Installation and Adjustment of the Saddle

Install and adjust the saddle for comfort.

1. Step 1: Insert the seat post into the seat tube of the frame.
2. Step 2: Attach the saddle to the seat post clamp.
3. Step 3: Adjust the saddle height by loosening the quick-release lever, setting the desired height, and then tightening the lever. Ensure the minimum insertion line is not visible above the frame.
4. Step 4: Adjust the saddle angle and fore/aft position for optimal comfort. Torque for seat post clamp: 6-10 Nm.

Recommendation: Adjust the saddle height so that your leg is slightly bent when the pedal is at its lowest point. Ensure the quick-release lever is securely fastened for safety.

2.1.7 Installation of Lights

Install the front and rear lights.

1. Step 1: Mount the front headlight onto the handlebar or fork using the provided bracket and M6 screws.
2. Step 2: Mount the rear taillight onto the seat post or rear fender using the provided bracket and M6 screws.

2.1.8 Installation - Pedals

Install the pedals correctly.

1. Step 1: Identify the left (L) and right (R) pedals. They are usually marked.
2. Step 2: Screw the right pedal into the right crank arm (clockwise).
3. Step 3: Screw the left pedal into the left crank arm (counter-clockwise).
4. Step 4: Tighten both pedals securely using a pedal wrench. Torque: 35-40 Nm.

2.1.9 Tire Inflation

Inflate the tires to the recommended pressure.

1. Step 1: Remove the valve cap.
2. Step 2: Attach the air pump to the valve.
3. Step 3: Inflate the tires to the recommended pressure. The recommended pressure is typically indicated on the tire sidewall (e.g., 20 PSI for this model).
4. Step 4: Replace the valve cap.

Do not over-inflate the tires. Ensure the tire pressure is within the recommended range.

2.1.10 Final Results

Congratulations! Your ENGWE L20 3.0 Boost electric bike is now assembled. Please double-check all connections and settings before your first ride.

3.1 Precautions for Use

To ensure the longevity and safety of your electric bike, please adhere to the following precautions:

• Regularly inspect your bike before each ride.
• Keep the bike clean and dry, especially electrical components.
• Avoid riding in heavy rain or through deep water.
• Do not modify the electrical system or components without authorization.
• Store the bike in a dry, moderate temperature environment when not in use.
• Consult a professional for any complex repairs or maintenance.

3.2 Bike and Self-Inspection Maintenance

Pre-ride Inspection:

• Check tire pressure and condition.
• Verify brake function (levers, pads, cables).
• Ensure all bolts and screws are tight.
• Check the battery charge level.
• Test lights and horn.
• Inspect the frame and fork for any damage.

General Maintenance:

• Clean the bike regularly with a damp cloth. Avoid high-pressure water jets, especially near electrical parts.
• Lubricate the chain periodically (e.g., every 100-200 km or after riding in wet conditions).
• Check and adjust brake pads and cables as needed.
• Inspect the frame and components for wear or damage.

Motor Maintenance:

• The motor is sealed and generally maintenance-free.
• Avoid exposing the motor hub to excessive water or impact.
• If you hear unusual noises, consult a service center.

Battery Maintenance:

• Keep the battery contacts clean.
• Charge the battery regularly. Avoid deep discharges.
• Store the battery in a cool, dry place.
• Do not disassemble the battery.
• If storing for an extended period, charge the battery to about 70-80% and store it in a moderate temperature environment.

3.3 General Troubleshooting Methods

Error Codes:

• E30: Communication failure
• E01/E02/E42: Controller current fault
• E31: Control unit failure
• E03: Controller Hall fault
• E36: Torque sensor fault
• E05: Controller temperature protection
• E37: Speed sensor fault
• E06: Motor temperature protection
• E38: Temperature sensor fault
• E09: Voltage error
• E43: Motor failure

If an error code appears, check the display manual or contact ENGWE customer service for assistance.

3.4 Precautions for the Rear Derailleur Cage

When installing or adjusting the rear derailleur, ensure the derailleur cage is not obstructed or damaged. Avoid applying excessive force during installation. If you are unsure, consult a professional service center.

4.1 Warranty Policy

ENGWE provides a limited warranty for its electric bikes. The warranty covers manufacturing defects and component failures under normal use.

General Exclusions: The warranty does not cover normal wear and tear, damage caused by accidents, misuse, neglect, unauthorized modifications, improper assembly, or use of non-original parts. The warranty is non-transferable and applies only to the original owner.

For warranty claims, please contact your authorized ENGWE dealer or ENGWE customer service.

4.2 Warranty Card and Maintenance Records

Please fill out the warranty card completely and keep it for your records. Regularly update the maintenance records to track your bike's service history.

Warranty Card Fields:

• User Name
• Company Name (if applicable)
• Phone Number
• Address
• Date of Purchase
• Bike Model
• Frame Number
• Invoice Number
• Motor Number
• Color

Maintenance Records Fields:

• Date
• Maintenance Content
• Notes

4.3 Product Parameters

*Note: The maximum range depends on factors such as riding conditions, rider weight, terrain, battery charge level, temperature, and pedal assistance level. The stated range is an estimate under optimal conditions.