1. Introduction
Thank you for choosing the Qlaway BK20 20-inch Fat Tire Electric Bike. This manual provides essential information for the safe assembly, operation, and maintenance of your electric bike. Please read this manual thoroughly before your first ride to ensure proper use and to maximize your riding experience.
The Qlaway BK20 is designed for adults and features a powerful 750W motor, a 48V 18AH battery, and full suspension, making it suitable for various terrains including urban roads, mountain trails, snow, and beaches.
2. Safety Information
Your safety is paramount. Always wear a helmet and appropriate safety gear when riding. Adhere to all local traffic laws and regulations. Regular maintenance is crucial for safe operation.
- Always perform a pre-ride inspection, checking brakes, tire pressure, and battery charge.
- Do not ride under the influence of alcohol or drugs.
- Ensure the battery is securely locked in place before riding.
- Avoid riding in heavy rain or extreme weather conditions.
- Do not exceed the maximum weight recommendation of 330 pounds (150 kg).
- Familiarize yourself with the bike's controls and features in a safe, open area before riding in traffic.
3. Package Contents
Upon unpacking, please verify that all components are present and undamaged:
- Qlaway BK20 Electric Bike (90% pre-assembled)
- 48V 18AH Battery
- Battery Charger
- Backseat
- User Manual (this document)
- Tool Kit
- Lock
4. Assembly Instructions
The Qlaway BK20 electric bike arrives 90% pre-assembled. The remaining assembly typically involves attaching the front wheel, handlebars, pedals, and backseat. Refer to the included tool kit for necessary instruments.
- Unpacking: Carefully remove the bike and all components from the packaging. Retain packaging for future transport or storage.
- Handlebar Installation: Attach the handlebars to the stem, ensuring they are centered and tightened securely.
- Front Wheel Installation: Install the front wheel, ensuring the brake rotor is correctly aligned with the caliper and the quick-release skewer or axle nuts are tightened to specification.
- Pedal Installation: Identify the left (L) and right (R) pedals. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise. Apply a small amount of grease to the threads before installation.
- Seat Adjustment: Adjust the main seat height for comfortable pedaling. Install the backseat if desired, ensuring it is securely fastened.
- Battery Installation: Insert the fully charged battery into its compartment and lock it securely with the provided key.
- Pre-Ride Check: Before your first ride, double-check all bolts, nuts, and quick releases for tightness. Ensure brakes are functional and tires are inflated to the recommended pressure.
Image: Close-up view of the Qlaway BK20 electric bike highlighting the dual multi-hole disc brakes, retro headlight, and taillight. These components are crucial for safety and operation.
5. Operating Instructions
5.1. Powering On/Off
To power on the bike, ensure the battery is installed and locked. Press and hold the power button on the LCD display. To power off, press and hold the same button.
5.2. LCD Display and Controls
The smart LCD display provides real-time information such as speed, battery level, mileage, and current riding mode. Use the control buttons near the display to navigate through settings and adjust assist levels.
Image: View of the Qlaway BK20 handlebars, showing the multi-functional LCD display and an integrated phone holder. The display provides essential riding data.
5.3. Riding Modes
The Qlaway BK20 offers multiple riding modes to suit different preferences and terrains:
- Pedal Assist Mode: The motor provides assistance as you pedal. There are 5 adjustable speed levels, ranging from 6 mph to 31 mph. The level of assistance can be customized via the APP.
- Pure Electric Mode: Engage the throttle for motor power without pedaling. This mode allows for speeds up to 31 mph (50 km/h).
- Riding Mode (Manual): Ride the bike like a traditional bicycle, using pedal power only. The 7-speed gears allow for smooth shifting.
- Walking Assist: Provides low-speed motor assistance to help push the bike when walking alongside it.
Image: Illustration of the Qlaway BK20 electric bike demonstrating its four riding modes: Riding Mode, Walking Assist, Pure Electric Mode, and Pedal Assist Mode.
5.4. Smart Cruise Control
The cruise control function activates automatically after maintaining a steady speed for 8 seconds. To exit cruise control, simply accelerate or apply the brakes.
5.5. Gearing
The Qlaway BK20 is equipped with 7-speed gears and a rear derailleur for smooth and efficient pedaling. Use the shifter on the handlebars to change gears according to terrain and desired effort.
Image: Detailed view of the 7-speed gear shifter on the Qlaway BK20 electric bike, illustrating its function for adapting to different terrains.
6. Battery Information
6.1. Charging the Battery
The 48V 18AH (864Wh) battery provides a range of 40-70 miles per charge. Charging time is approximately 6 hours. The battery is removable and can be charged both indoors and outdoors.
- Connect the charger to the battery charging port.
- Plug the charger into a standard wall outlet.
- The charger indicator light will typically show red during charging and turn green when fully charged.
- Do not overcharge the battery. Disconnect the charger once charging is complete.
Image: The Qlaway BK20 electric bike with its removable battery connected to the charger, illustrating the charging process.
6.2. Battery Care and Storage
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for extended periods, charge the battery to 50-70% every 1-2 months to maintain its health.
- Do not expose the battery to water or moisture.
- Only use the original Qlaway charger provided with your bike.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your Qlaway BK20 electric bike.
- Cleaning: Clean the bike regularly with a damp cloth. Avoid using high-pressure washers directly on electrical components.
- Tires: Check tire pressure before each ride. The 20" x 4" fat tires require specific pressure for optimal performance and grip on various terrains. Refer to the tire sidewall for recommended pressure.
- Brakes: Inspect brake pads and rotors regularly for wear. Ensure brake levers are responsive and provide adequate stopping power. Adjust or replace components as needed.
- Chain: Keep the chain clean and lubricated to ensure smooth gear changes and prevent wear.
- Fasteners: Periodically check all bolts, nuts, and quick releases for tightness.
- Suspension: The dual suspension system (front and rear) should be inspected for proper function and any signs of damage.
Image: A rider on the Qlaway BK20 electric bike, highlighting the advanced full suspension system designed for greater riding ease and superior smoothness on varied terrain.
8. Troubleshooting
This section addresses common issues you might encounter with your Qlaway BK20 electric bike.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on. | Battery not charged, battery not installed correctly, loose connection. | Ensure battery is fully charged. Check if the battery is securely inserted and locked. Inspect all cable connections. |
| Motor not assisting. | Low battery, pedal assist level set to zero, brake levers engaged, motor error. | Check battery level. Increase pedal assist level on the display. Ensure brake levers are not squeezed. Restart the bike. If issue persists, contact support. |
| Short battery range. | Under-inflated tires, riding in high assist modes, frequent stops/starts, cold weather. | Inflate tires to recommended pressure. Use lower assist modes. Maintain a consistent speed. Battery performance can be reduced in cold temperatures. |
| Brakes feel weak. | Worn brake pads, loose brake cable, air in hydraulic system (if applicable). | Inspect and replace worn brake pads. Adjust brake cable tension. If hydraulic, seek professional service. |
For issues not listed here or if solutions do not resolve the problem, please contact Qlaway customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | BK20 |
| Bike Type | Electric Bike |
| Motor | 750W (1500W Peak) |
| Max Speed | 31 MPH (50 KM/H) |
| Climbing Slope | 30 degrees |
| Torque | 80 Nm |
| Battery | 48V 18AH (864Wh) Removable Lithium-Ion |
| Range per Charge | 40-70 Miles |
| Charging Time | Approx. 6 hours |
| Frame Material | High Carbon Steel |
| Wheel Size | 20 Inches |
| Tire Width | 4 Inches (Fat Tires) |
| Suspension | Dual (Front & Rear Shock Absorbers) |
| Brake Style | Dual Disc Brakes |
| Number of Speeds | 7-Speed Gear System |
| Max Load Capacity | 330 Pounds (150 kg) |
| Item Weight | 88 Pounds (40 kg) |
| Recommended Height | 5.5 FT - 6.5 FT |
| Dimensions (LxWxH) | 64.9 x 27.9 x 43.7 inches (165 x 71 x 111 cm) |
| Included Components | Backseat, Battery, Charger, User Manual, Tool Kit, Lock |
Image: A size diagram for the Qlaway BK20 electric bike, indicating recommended rider height (5.5ft-6.5ft), bike weight (88lbs), and maximum load capacity (330lbs), along with key dimensions.
10. Warranty and Support
Qlaway provides a 1-year guarantee on the electric motor, battery, and charger from the date of purchase. This warranty covers manufacturing defects under normal use.
- The warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
- Keep your purchase receipt as proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty claims regarding your Qlaway BK20 electric bike, please contact Qlaway customer support. Refer to the contact information provided with your purchase or visit the official Qlaway website.
11. Important Videos
Below are relevant videos to assist with understanding and operating your Qlaway BK20 electric bike.
Video: An official product video demonstrating features or assembly of the Qlaway BK20 electric bike. This video provides a visual guide to various aspects of the bike's functionality.
