1. Introduction
This manual provides essential instructions for the safe assembly, operation, maintenance, and troubleshooting of your 5TH WHEEL EB20 Electric Bike. Please read this manual thoroughly before your first ride to ensure proper use and to maximize the lifespan of your electric bike.
2. Safety Information
Your safety is paramount. Always adhere to the following guidelines:
- Always wear a helmet and appropriate safety gear when riding.
- Familiarize yourself with local traffic laws and regulations for electric bikes.
- Perform a pre-ride inspection before each use, checking brakes, tires, and battery level.
- Do not ride under the influence of alcohol or drugs.
- Avoid riding in adverse weather conditions, such as heavy rain or snow.
- Ensure the battery is securely locked in place before riding.
- Do not exceed the maximum weight recommendation of 265 lbs (120 kg).
- Keep both hands on the handlebars while riding.
- Use the headlight and rear reflector for visibility, especially during low-light conditions.
3. Package Contents
Upon opening the box, verify that all the following items are included:
- 5TH WHEEL EB20 Electric Bike (partially assembled)
- Charger
- User Manual
- Pedals (Left and Right)
- Front Reflector
- Rear Reflector
- Basic Tool Kit (Wrench, Screwdriver)
- Keys for battery lock
Video: Unboxing and initial components of the 5TH WHEEL EB20 Electric Bike. This video demonstrates how to safely remove the bike from its packaging and identify the included parts.
4. Setup and Assembly
The 5TH WHEEL EB20 Electric Bike comes 95% pre-assembled. Follow these steps to complete the assembly:
4.1 Unfolding the Handlebar
- Locate the folding mechanism on the handlebar stem.
- Release the safety latch and unfold the handlebar upwards until it locks into place.
- Ensure the quick-release lever is securely tightened to prevent movement during riding.
Video: Demonstrates the quick-fold mechanism for the handlebar.
4.2 Installing the Seat Post and Rear Reflector
- Insert the seat post into the frame's seat tube.
- Adjust the seat height to a comfortable position, ensuring your feet can touch the ground when stopped.
- Secure the seat post with the quick-release clamp.
- Attach the rear reflector to the seat post using the provided bracket and screwdriver.

Image: The adjustable suspension seat and its height range.
4.3 Installing the Front Reflector
- Attach the front reflector to the handlebar using the provided clamp and screwdriver.
- Ensure it is securely fastened and facing forward.
4.4 Installing the Pedals
Important: The pedals are marked 'L' for Left and 'R' for Right. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise.
- Identify the Left (L) and Right (R) pedals.
- Carefully thread the 'L' pedal into the left crank arm (on the non-chain side) by turning it counter-clockwise.
- Thread the 'R' pedal into the right crank arm (on the chain side) by turning it clockwise.
- Use the provided wrench to tighten both pedals securely. Overtightening can damage the threads.
Video: Detailed steps for installing the left and right pedals.
5. Operating Instructions
5.1 Powering On/Off and Key Start
- Insert the key into the ignition slot located near the right handlebar grip.
- Turn the key to the 'ON' position to activate the bike's electrical system. The display screen will illuminate.
- To turn off the bike, turn the key to the 'OFF' position and remove it.

Image: Close-up of the key start mechanism on the handlebar.
5.2 Speed Modes and Throttle Operation
The EB20 features 3 speed modes and a twist throttle for electric assistance.
- Gear 1: Approximately 9 MPH (15 KM/H) - Suitable for low-speed control.
- Gear 2: Approximately 15 MPH (25 KM/H) - Ideal for cruising.
- Gear 3: Approximately 20 MPH (32 KM/H) - For maximum speed.
Use the gear switch on the left handlebar to select your desired speed mode. To engage electric assist, you can either pedal (Pedal Assist System - PAS) or twist the right-hand throttle grip.

Image: The 3-speed gear switch and its corresponding speeds.

Image: The ergonomic twist throttle for electric power.
5.3 Headlight and Horn
The headlight and horn are controlled by buttons on the left handlebar. Press the headlight button to turn the front light on or off. Press the horn button to activate the horn.

Image: The bright 2W headlight, illuminating the path ahead.

Image: Controls for headlight, gear shift, and horn on the left handlebar.
5.4 Braking System
The EB20 is equipped with front and rear dual 160MM disc brakes and an EABS system for effective stopping power. Squeeze both brake levers simultaneously for balanced and controlled braking.

Image: Overview of the safety features including EABS and disc brakes.
5.5 Folding and Portability
The EB20 features a foldable handlebar for compact storage and transport. To fold, release the handlebar stem latch and fold it down. The bike's compact design allows it to fit into car trunks or be carried on public transport.

Image: The EB20 Electric Bike folded and being placed into a car trunk, demonstrating its portability.

Image: The U-shape grip zone and triple safety folding structure for easy carrying.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your EB20 Electric Bike.
- Tires: Check tire pressure regularly. The 14-inch pneumatic tires are designed to absorb bumps.
- Brakes: Inspect brake pads and discs periodically for wear. Adjust brake tension as needed.
- Battery: Charge the 36V 7.8AH battery fully after each ride. Avoid completely draining the battery. Store the bike in a cool, dry place when not in use.
- Cleaning: Wipe down the bike with a damp cloth. Avoid using high-pressure water jets directly on electrical components.
- Fasteners: Periodically check all bolts and nuts for tightness.
7. Troubleshooting
Here are solutions to common issues you might encounter:
- Bike does not power on:
- Ensure the key is fully inserted and turned to the 'ON' position.
- Check if the battery is charged and properly connected.
- Motor not assisting:
- Verify the battery has sufficient charge.
- Check if the speed mode is selected.
- Ensure the throttle is engaged or you are pedaling to activate PAS.
- Brakes feel loose:
- Inspect brake cables for slack and adjust as necessary.
- Check brake pads for wear and replace if worn.
- Unstable seat post:
- Ensure the quick-release clamp for the seat post is tightened securely.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | 5TH WHEEL |
| Model Name | EB20 |
| Bike Type | Electric Bike |
| Age Range | Adult |
| Color | Black |
| Wheel Size | 14 Inches |
| Frame Material | Iron / Aluminum |
| Motor | 350W (Peak 650W) Brushless Motor |
| Max Speed | 20 MPH (32 KM/H) |
| Battery | 36V 7.8AH (280.8 Watt Hours) with BMS |
| Max PAS Range | Up to 25 Miles |
| Charging Time | Approx. 5 Hours |
| Number of Speeds | 3 (Electronic Gear Shifter) |
| Brake Style | Dual 160MM Disc Brakes with EABS |
| Suspension Type | Front |
| Maximum Weight Recommendation | 265 Pounds (120 kg) |
| Minimum User Height | 60 Inches (5 feet) |
| Special Features | Adjustable Seat, Durable, Headlight, Multi-Speed, Portable, Foldable Handlebar, Cargo Rack |
| Included Components | Charger, User Manual |
| Item Dimensions (LxWxH) | 47.25 x 19.68 x 39.37 inches |
9. Warranty and Support
The 5TH WHEEL EB20 Electric Bike comes with a 1-Year Warranty. For any product inquiries, technical assistance, or warranty claims, please contact 5TH WHEEL customer support. Refer to the contact information provided with your purchase or visit the official 5TH WHEEL website.
You can also find support and additional information by visiting the 5TH WHEEL Store on Amazon.





