1. Introduction
Thank you for choosing the KETELES KF9 Pro Folding Electric Bike. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your new e-bike. Please read this manual thoroughly before your first ride and keep it for future reference. Proper use and maintenance will ensure a long and enjoyable experience with your KF9 Pro.
Figure 1: KETELES KF9 Pro Electric Bike (unfolded)
2. Safety Information
⚠ WARNING:
- Please mind potential fire risk and strictly follow the instruction manual for charging and storage of the battery.
- While using the product, please wear appropriate protective equipment, including a helmet, and fully comply with all applicable local laws and regulations regarding electric bicycles.
- Always perform a pre-ride safety check, including brakes, tire pressure, and battery charge.
3. Package Contents
Your KETELES KF9 Pro package should include the following items:
- KETELES KF9 Pro Folding Electric Bike (partially assembled)
- 48V 26Ah Lithium Battery
- Battery Charger
- Keys for battery lock
- Front Basket
- Rear Rack
- User Manual (this document)
- Basic Tool Kit (for assembly and adjustments)
4. Setup and Initial Assembly
4.1 Unfolding the Bike
- Carefully remove the bike from its packaging.
- Locate the main frame folding latch (Figure 2). Release the latch and unfold the frame until it locks securely into place.
- Unfold the handlebar stem. Secure the stem in the upright position using the quick-release lever and safety latch (Figure 3).
- Adjust the handlebar height and angle to your preference, then tighten all fasteners.
- Install the front wheel if it came detached.
- Attach the pedals. Note that pedals are usually marked 'L' for left and 'R' for right, and thread in opposite directions.
- Adjust the seat post height for comfortable riding. Ensure the seat post is inserted past the minimum insertion line.
Figure 2: Main Frame Folding Mechanism
Figure 3: Handlebar Stem Folding Mechanism
4.2 Battery Installation and Initial Charge
- Insert the 48V 26Ah Lithium Battery into its compartment on the bike frame (Figure 4). Use the provided key to lock the battery in place.
- Before your first ride, fully charge the battery. Connect the charger to the charging port on the battery and then to a standard wall outlet.
- The charging indicator on the charger will show the charging status. A full charge typically takes 7-9 hours.
- Once fully charged, disconnect the charger.
Figure 4: 48V 26Ah Lithium Battery and Charging Information
Figure 5: Battery Pack Mounted on Frame
5. Operating Instructions
5.1 Powering On/Off
To power on the e-bike, turn the key in the battery lock to the 'ON' position and then press and hold the power button on the LCD display. To power off, press and hold the power button again.
5.2 Smart LCD Display
The Smart LCD Display (Figure 6) provides crucial information during your ride:
- Battery Level: Indicates remaining battery charge.
- Walk Boost: Provides low-speed assistance for walking the bike.
- MPH: Displays current speed in miles per hour.
- Trip Odometer: Tracks distance for the current trip.
- PAS (Pedal Assist System): Shows the current level of pedal assistance.
- Cruise: Activates cruise control for maintaining a constant speed.
Figure 6: Smart LCD Display
5.3 Riding Modes and Gears
Your KF9 Pro features dual 1000W motors and a 7-speed gear system (Figure 7) for versatile riding:
- Pedal Assist Mode (PAS): The motor provides assistance as you pedal. Adjust the PAS level on the display to control the amount of assistance.
- Electric Mode (Throttle Only): Use the throttle to propel the bike without pedaling.
- Manual Mode: Ride the bike like a traditional bicycle without motor assistance.
- 7-Speed Gear System: Use the shifter on the handlebars to change gears, adapting to different terrains and inclines.
Figure 7: 7-Speed Gear Shifter
5.4 Folding the Bike for Storage/Transport
To fold your KF9 Pro:
- Ensure the bike is powered off.
- Lower the seat post completely.
- Release the handlebar stem quick-release and fold the handlebars down.
- Release the main frame folding latch and carefully fold the frame in half.
- Fold the pedals inward (Figure 8).
Figure 8: Folding Pedal
Figure 9: KETELES KF9 Pro in Folded State
6. Maintenance
6.1 Battery Care
- Always use the original charger provided with your e-bike.
- Do not overcharge or completely drain the battery. Charge it regularly, especially if not used for extended periods.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for a long time, charge it to about 50-70% capacity.
- Avoid exposing the battery to water or moisture.
6.2 General Bike Maintenance
- Brakes: Regularly check the hydraulic disc brakes for proper function and wear. Ensure brake levers are firm and responsive.
- Tires: Maintain correct tire pressure as indicated on the tire sidewall. Inspect tires for wear, punctures, or damage before each ride.
- Chain: Keep the chain clean and lubricated for smooth operation and to prevent rust.
- Bolts and Fasteners: Periodically check all bolts, nuts, and quick-release levers to ensure they are securely tightened. Pay special attention to folding mechanisms.
- Cleaning: Clean your e-bike with a damp cloth. Avoid using high-pressure washers directly on electrical components.
7. Troubleshooting
This section addresses common issues you might encounter. For more complex problems, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged or not properly installed; Power button not pressed correctly. | Ensure battery is fully charged and locked in place. Press and hold the power button on the display. |
| Motor not assisting | Low battery; PAS level set to 0; Loose electrical connection. | Check battery level and charge if necessary. Increase PAS level. Inspect motor cable connections. |
| Brakes feel spongy or weak | Air in hydraulic lines; Worn brake pads. | Have brakes bled by a qualified technician. Replace brake pads if worn. |
| Unusual noises during ride | Loose components; Dry chain; Misaligned gears. | Check all bolts and fasteners. Lubricate chain. Adjust gears if necessary or consult a bike mechanic. |
8. Specifications
Figure 10: KETELES KF9 Pro Dimensions and Rider Information
| Feature | Specification |
|---|---|
| Brand | Keteles |
| Model | KF9 Pro |
| Motor | 2 x 1000W High-Speed Brushless Motors |
| Max Speed | Up to 50 Km/h (approx. 31 MPH) |
| Torque | 2 x 85 N·m |
| Climbing Angle | Up to 40° |
| Battery | 48V 26Ah Lithium Battery |
| Charging Time | 7-9 hours |
| Range (Electric Mode) | Approx. 28 miles (45 km) |
| Range (Rear Wheel Motor Only) | Approx. 40 miles (64 km) |
| Range (Pedal Assist) | Over 60 km (approx. 37 miles) |
| Braking System | Hydraulic Disc Brakes |
| Gears | 7 Speed |
| Frame Material | Aluminum Alloy |
| Wheel Size | 20 inches |
| Ebike Weight | 44.5 kg (98.1 lbs) |
| Load Capacity | Max 200 kg (440 lbs) |
| Recommended Rider Height | 150-190 cm (4.9-6.2 ft) |
9. User Tips
- Check Local Regulations: Before riding, familiarize yourself with local laws regarding electric bicycles, including speed limits, helmet requirements, and where e-bikes are permitted to ride.
- Battery Longevity: To maximize battery life, avoid storing the bike in extreme temperatures and try to keep the battery charge between 20% and 80% during regular use.
- Regular Inspections: Perform quick checks on tire pressure, brake function, and general bike integrity before every ride to ensure safety and optimal performance.
10. Warranty and Support
Your KETELES KF9 Pro Electric Bike is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and duration. For technical support, spare parts, or warranty claims, please contact the seller or authorized service center.
