1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Varstrom 29in E-City Electric Bicycle. Please read this manual thoroughly before your first ride and keep it for future reference.
Safety Warnings
- Always wear a helmet when riding.
- Ensure all components are securely fastened before each ride.
- Do not ride under the influence of alcohol or drugs.
- Familiarize yourself with local traffic laws and regulations.
- Regularly check brakes, tires, and battery charge.
2. Setup and Assembly
Your Varstrom E-City Bike comes partially assembled. Follow these steps to complete the assembly and prepare for your first ride.
2.1 Unpacking
Carefully remove the bicycle and all components from the packaging. Check for any visible damage during transit.
2.2 Handlebar Installation
Attach the handlebars to the stem, ensuring they are centered and tightened securely. Adjust the angle for comfortable riding posture.
2.3 Pedal Installation
Identify the left (L) and right (R) pedals. Apply a small amount of grease to the threads and screw them into the crank arms. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise. Tighten firmly with a wrench.
2.4 Seat Post and Saddle Adjustment
Insert the seat post into the frame. Adjust the saddle height so your leg has a slight bend at the knee when the pedal is at its lowest point. Secure the quick-release lever or bolt firmly.
2.5 Front Wheel Installation
If the front wheel is not pre-installed, carefully align it with the front fork dropouts. Ensure the brake rotor is correctly positioned within the caliper. Secure with the quick-release skewer or axle nuts.
2.6 Battery Installation and Initial Charge
Insert the battery into its compartment on the frame. Ensure it clicks into place. Before first use, fully charge the battery using the provided charger. Refer to the "Battery Charging" section for details.
Figure 1: Fully assembled Varstrom 29in E-City Bike. This image shows the complete bicycle with its frame, wheels, handlebars, seat, and integrated rear rack.
Figure 2: Close-up of the Varstrom E-City Bike's integrated battery compartment. The image highlights the location where the removable 43.2V 13Ah lithium-ion battery is housed within the frame.
3. Operating Your E-City Bike
Understanding the controls and features of your Varstrom E-City Bike will ensure a safe and enjoyable riding experience.
3.1 Powering On/Off
Press and hold the power button on the LCD display to turn the bike's electrical system on or off.
3.2 LCD Display Functions
The intelligent LCD display provides real-time information about your ride:
- Battery Level: Indicates remaining battery charge.
- Speed: Current riding speed (km/h).
- Mileage: Total distance traveled (odometer) and trip distance.
- Assistance Level: Shows the current pedal assistance level.
Figure 3: Close-up of the Varstrom E-City Bike's intelligent LCD display. The screen shows various metrics including battery level, current speed, trip distance, and total distance, along with the pedal assistance level.
3.3 Riding Modes
Your E-City Bike offers three distinct riding modes:
- Normal Bike Mode: The electric assistance is off. The bike operates like a traditional bicycle.
- Pedal Assist Mode (PAS): The motor provides assistance as you pedal. You can select from multiple assistance levels (e.g., 1-4) to control the amount of power. This mode offers up to 100 km range.
- Boost Mode: Provides maximum assistance for easier starting or climbing steep inclines.
Use the '+' and '-' buttons on the control panel to switch between assistance levels.
3.4 Gear Shifting
The Varstrom E-City Bike is equipped with a Shimano 7-speed transmission system. Use the shifter on the handlebars to change gears according to terrain and desired speed. Shift to a lower gear for climbing and a higher gear for flat terrain or descents.
Figure 4: Detailed view of the Varstrom E-City Bike's Shimano 7-speed transmission system. This image shows the rear derailleur, cassette, and chain, illustrating the gear components.
3.5 Braking
Your bike is equipped with reliable disc brakes. Use both front and rear brakes simultaneously for effective and safe stopping. Apply gentle pressure initially and increase as needed.
3.6 Lights and Rear Rack
The bike includes integrated front and rear lights for enhanced visibility. The rear rack can carry up to 20 kg of cargo. Ensure items are securely fastened before riding.
Figure 5: View of the Varstrom E-City Bike's integrated rear rack and lighting system. The image shows the sturdy aluminum alloy rear rack designed to carry up to 20kg, along with the rear light for night riding safety.
4. Maintenance
Regular maintenance is crucial for the longevity and performance of your Varstrom E-City Bike.
4.1 Battery Care and Charging
- Always use the original charger provided.
- Charge the battery in a well-ventilated area, away from flammable materials.
- Do not overcharge the battery; disconnect once fully charged.
- If storing the bike for an extended period, charge the battery to 50-70% and recharge every 2-3 months.
- Avoid exposing the battery to extreme temperatures.
Figure 6: The removable 43.2V 13Ah lithium-ion battery for the Varstrom E-City Bike. This image illustrates the battery's design, emphasizing its removability for convenient charging.
4.2 Cleaning
Clean your bike regularly with a damp cloth and mild soap. Avoid using high-pressure washers directly on electrical components, bearings, or the motor.
4.3 Tire Pressure
Maintain correct tire pressure as indicated on the tire sidewall. Proper inflation improves ride quality, efficiency, and prevents punctures.
4.4 Brake Inspection
Regularly check brake pads for wear and brake levers for proper tension and responsiveness. Adjust or replace components as needed.
4.5 Chain Lubrication
Keep the chain clean and lubricated to ensure smooth gear changes and prevent premature wear.
5. Troubleshooting
This section addresses common issues you might encounter with your Varstrom E-City Bike.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike does not power on | Battery not charged or not properly installed; loose electrical connection. | Ensure battery is fully charged and securely seated. Check all visible cable connections. |
| Motor not assisting | Pedal Assist (PAS) level set to zero; brake levers engaged; sensor issue. | Increase PAS level on the display. Ensure brake levers are fully released. Contact support if issue persists. |
| Short battery range | Low tire pressure; riding in high assistance levels; heavy load; cold weather. | Check tire pressure. Use lower assistance levels. Reduce load. Battery performance decreases in cold weather. |
| Noisy brakes | Contaminated brake pads/rotors; worn pads; misaligned caliper. | Clean brake components. Replace worn pads. Adjust caliper alignment. |
If you encounter issues not listed here or require further assistance, please contact Varstrom customer support.
6. Specifications
Detailed technical specifications for your Varstrom 29in E-City Bike.
| Component | Specification |
|---|---|
| Model | Varstrom 29in E-City Bike |
| Motor | 250W Brushless Rear Hub Motor, 55 Nm Torque |
| Max Speed | 25 km/h (15.5 mph) |
| Battery | 43.2V 13Ah (561.6Wh) Removable Lithium-Ion |
| Range | Up to 100 km (Pedal Assist Mode) |
| Frame Material | 6061 Aluminum Alloy, Low-Step Design |
| Wheel Size | 29 Inches |
| Tires | Kenda 700x40 |
| Suspension | Suntour NEX Fork with Hydraulic Suspension |
| Gears | Shimano 7-Speed Transmission (MF-TZ500-7 Sprocket, RD-TY300 Derailleur, SL-TX50 Shifter) |
| Display | Intelligent LCD (Battery, Speed, Mileage, PAS Level) |
| Brakes | Disc Brakes (Front and Rear) |
| Rear Rack Capacity | Up to 20 kg |
| Included Accessories | Front and Rear LED Lights, Bell, Integrated Luggage Rack, Kickstand, Mudguards, Chain Guard |
Figure 7: A diagram illustrating key specifications and components of the Varstrom 29in E-City Bike. This visual summary includes details on the motor, battery, frame, transmission, suspension, and included accessories.
7. Warranty Information
Varstrom products are covered by a limited warranty against manufacturing defects. Please refer to the warranty card included with your purchase or visit the official Varstrom website for detailed terms and conditions. Keep your proof of purchase for warranty claims.
The warranty typically covers the frame, motor, and battery for a specified period, provided the product has been used and maintained according to this manual.
8. Customer Support
For technical assistance, spare parts, or warranty inquiries, please contact Varstrom customer support:
- Email: support@varstrom.com
- Website: www.varstrom.com
- Please have your model number and purchase date ready when contacting support.
