Introduction
Welcome to the Aairsk XT90 Electric Bike user manual. This guide provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your new electric bicycle. Please read this manual thoroughly before your first ride to ensure optimal performance and safety.
Safety Information
WARNING: Please mind potential fire risk and strictly follow the instruction manual for charging and storage. While using the product, please wear protective equipment and fully comply with the applicable law and regulations.
- Always wear a helmet and appropriate safety gear when riding.
- Familiarize yourself with local e-bike laws and regulations.
- Perform a pre-ride safety check before each use.
- Do not operate the e-bike under the influence of alcohol or drugs.
- Ensure all components are securely fastened before riding.
Setup and Assembly
Your Aairsk XT90 Electric Bike comes partially assembled. Follow these steps to complete the assembly and prepare for your first ride.
- Unpacking: Carefully remove all components from the packaging. Keep all packing materials until you are sure the bike is fully functional.
- Handlebar Installation: Attach the handlebars to the stem, ensuring they are centered and tightened securely.
- Front Wheel Installation: Install the front wheel, making sure the quick-release skewer or axle nuts are properly tightened.
- Pedal Installation: Identify the left (L) and right (R) pedals. Thread the 'L' pedal counter-clockwise into the left crank arm and the 'R' pedal clockwise into the right crank arm. Tighten firmly with a wrench.
- Seat Post Adjustment: Insert the seat post into the frame and adjust the seat height to a comfortable riding position. Ensure the quick-release clamp is securely tightened.
- Tire Inflation: Inflate both tires to the recommended pressure indicated on the tire sidewall.
- Initial Battery Charge: Fully charge the battery before your first ride. Refer to the 'Battery Information' section for detailed charging instructions.
Operating Instructions
Understand the controls and functions of your Aairsk XT90 for a smooth riding experience.
- Power On/Off: Press and hold the power button on the intelligent display to turn the bike on or off.
- Intelligent Display: The display shows critical information such as battery level, real-time speed, speed grade (assist level), and riding status.
- Pedal Assist System (PAS): The bike offers multiple levels of pedal assist. Use the '+' and '-' buttons on the display to adjust the assist level. Higher levels provide more motor assistance.
- Throttle: The twist throttle on the right handlebar allows for electric-only propulsion without pedaling. Use with caution and according to local regulations.
- Gear Shifting: Your bike is equipped with a Shimano 21-speed derailleur. Use the shifters on the handlebars to change gears for different terrains and inclines.
- Braking: The bike features double sensitivity disc brakes. Apply both brake levers gently and evenly to slow down or stop.
- Headlights and Horn: Activate the front headlight and horn using the dedicated buttons on the handlebars for improved visibility and safety.
Battery Information and Charging
The Aairsk XT90 is powered by a 48V 20AH large-capacity lithium battery, offering extended range and reliable performance.
- Charging: Connect the charger to the bike's charging port and then to a standard wall outlet. The indicator light on the charger will show the charging status. A full charge typically takes 6 hours.
- Battery Removal: The battery is designed to be removable for convenient charging indoors or for security. Consult the bike's frame for the specific release mechanism (usually a key lock).
- Range: Expect a range of 28-37 miles in throttle mode and 40-65 miles in pedal-assist mode, depending on terrain, rider weight, and assist level.
- BMS Protection: The battery is equipped with a Battery Management System (BMS) for protection against overcharge, over-discharge, overcurrent, and short circuits, ensuring safety and longevity.
- 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 2-3 months.
Maintenance
Regular maintenance ensures the longevity and safe operation of your Aairsk XT90 Electric Bike.
- Cleaning: Clean the bike regularly with a damp cloth. Avoid using high-pressure washers directly on electrical components.
- Tire Pressure: Check tire pressure before each ride. Maintain the recommended PSI for optimal performance and safety.
- Brakes: Inspect brake pads for wear and ensure brake levers are responsive. Adjust or replace as needed.
- Chain: Keep the chain clean and lubricated to prevent rust and ensure smooth gear changes.
- Suspension: Periodically check the full suspension system for proper function and adjust damping if necessary. The suspension is lockable for different riding conditions.
- Fasteners: Regularly check and tighten all bolts, nuts, and quick-release mechanisms.
- Electrical Components: Keep all electrical connections dry and free from corrosion.
Troubleshooting
Here are some common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery low or off; loose connection | Charge battery; check battery connection; ensure battery is properly seated. |
| Motor not assisting | PAS level too low; brake lever engaged; motor cable loose | Increase PAS level; ensure brake levers are fully released; check motor cable connection. |
| Brakes feel weak | Worn brake pads; cable tension too low | Inspect and replace brake pads; adjust brake cable tension. |
| Gears not shifting smoothly | Derailleur out of adjustment; dirty chain | Clean and lubricate chain; adjust derailleur (professional service recommended). |
For complex issues or repairs, it is recommended to consult a qualified bicycle mechanic or contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | XT90 |
| Motor | 1000W Peak Brushless Motor (250W nominal for some variants) |
| Voltage | 48V |
| Battery | 48V 20AH Lithium battery |
| Charging Time | Approx. 6 hours |
| Max Speed | Up to 28 MPH (45 km/h) |
| Torque | 75 N.M |
| Range per Power | 28-37 miles (throttle mode), 40-65 miles (pedal assist) |
| Climb Slopes | Up to 25° |
| Wheel Size | 26 inches |
| Tires | 26" x 2.6" All-Terrain Fat Tires |
| Suspension | Full Suspension (Lockable) |
| Gears | 21 Speed Shimano Gears |
| Brakes | Double Sensitivity Disc Brakes |
| Bicycle Weight | 60 LBS (approx. 27.2 kg) |
| Load Capacity | 330 LBS (approx. 150 kg) |
| Recommended Height | 64.2 - 74.8 inches (163 - 190 cm) |
| Certification | CE |
User Tips
- Battery Care: To maximize battery life, avoid completely draining the battery and store it partially charged if not used for long periods.
- Speed Regulations: Be aware that the bike's maximum speed may exceed local e-bike regulations in some regions. Always ride responsibly and comply with local laws.
- Assembly Check: Double-check all connections and fastenings after initial assembly and before your first few rides, as components can settle.
- Terrain Versatility: The 26"x2.6" all-terrain fat tires and full suspension make this bike suitable for various environments, including off-road, mountain roads, snow, and urban settings.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.