1. Introduction
This manual contains detailed information about the product, operation, and maintenance, along with helpful hints. Carefully read and familiarize yourself with the PULUMA PH003 before use to ensure safe operation, reduce the risk of damage and premature wear, and prevent accidents. Be sure to retain this manual as your convenient source of information about the PULUMA PH003.
This manual contains many warnings and cautions about safe operation and the consequences if proper setup, operation, and maintenance guidelines are not followed. All information in this manual should be reviewed carefully.
Since it is impossible to predict any situation or condition that may occur during a ride, this manual does not describe the safe use of our bicycles under all conditions. The use of any bicycle involves risks that cannot be predicted or avoided and is the sole responsibility of the rider. You should retain this manual, together with any other documentation accompanying the bike, for future reference, but everything in this manual may be changed or withdrawn without further notice.
Video: PULUMA PH003 Electric Bike in action, showcasing its all-terrain capabilities on various surfaces like sand and dirt paths.
2. Setup and Assembly
2.1 Handlebar Mounting
- Loosen the bolt on the bicycle valve stem.
- Center and rotate the handlebars so that they line up with the marks pointing in the diagram below.
- Tighten the bolts on the handlebar stem, but do not fully tighten as you may want to adjust the angle further for a more precise alignment. Completely tighten all bolts on the stem after determining the best position.

Figure 2.1: Handlebar mounting steps. Ensure proper alignment before fully tightening.
2.2 Front Wheel Mounting
- Remove the center protective rod of the fork. Pull out the brake protection pad.
- Align the front wheel with the center hole of the fork. Align the motor card position. Tighten the screws and plug in the motor cable.

Figure 2.2: Front wheel assembly, including brake and motor cable connection.
2.3 Pedal Mounting
- Before installing the pedal, apply a small amount of waterproof grease to the spindle.
- Start screwing on the pedal by hand to make sure the pedal is perfectly straight and rotating in the direction of the pointer shown on the crank. If it does not rotate smoothly, double-check you have the correct left or right pedal.
- After initial hand tightening, tighten the pedal with a standard 15mm wrench.

Figure 2.3: Correct installation of left (L) and right (R) pedals.
3. Operation
3.1 Safety Checklist (Basic Steps)
| Component | Checklist |
|---|---|
| Brakes |
|
| Wheels and Tires |
|
| Sprockets |
|
| Cranks and Pedals |
|
| Drivetrain (Driles) |
|
| Motor Drive |
|
| Battery Pack |
|
3.2 Display Functions (YL81F-C)
The YL81F-C display offers a variety of features to suit your riding needs, including:
- Battery level indicator
- Pedal assist (PAS) level indicator
- Speed (current speed, maximum speed, average speed)
- Mileage display (single and total mileage)
- Walk boost mode
- Light ON/OFF
- Error code indicator
- Personalized parameter settings (e.g., wheel diameter, speed limit, etc.).
- Factory default parameter recovery function

Figure 3.1: Smart LCD Display overview with various indicators.
3.3 Power On/Off
Long press the power button to turn the display on/off. When the display is off, it will not use battery power, and the leakage current is less than 1uA.
Note: The display will automatically shut off if it is not used for more than 10 minutes.
3.4 Display Interface Switching
When the display is powered on, it will show the Current Speed (km/h) and Trip Odometer (km) by default. Short press the power button to cycle between Trip Odometer (km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).

Figure 3.2: Display interface showing different data views.
3.5 Walk Boost Mode
Long press and hold the 'minus' button to activate walk boost mode. Your e-bike will run at a constant promoted speed. Release the button to stop power output immediately and restore to the normal state.
Note: The walk boost mode can only be used when pushing the electric bicycle. Do not use it while riding.
3.6 Turning On/Off Lights
Press the 'light' button to turn on the lights and dim the display backlight. Press again to turn off the lights and restore backlight brightness.
3.7 PAS Level Selection
Press the '+' or '-' button to switch the PAS (Pedal Assist System) level, thereby changing the motor output power. The specific speed is subject to the actual product.

Figure 3.3: PAS level selection interface.
3.8 Quick Switching Operation of Dual Drive Mode
Long press and hold the 'i' button on the main interface of the display. Three driving modes can be quickly cycled: rear wheel drive, front wheel drive, and full-time dual drive. When switching, the mileage value area prompts the current switching status.
- Rear Wheel Drive: Rear tires and internal stars flash simultaneously.
- Front Wheel Drive: Front tires and internal stars flash simultaneously.
- Full-Time Dual Drive: Front and rear tires and stars always light up.
4. Maintenance
4.1 Battery Charging
Charging procedure for non-bicycle charging:
- Locate the keys located on the handlebars and remove them. If you cut them off the handlebars, be careful not to damage any wires.
- NOTE: Please keep your keys and their spares in a safe place. Once lost, they are very difficult to duplicate.
- Use the key to unlock the battery. While holding the battery in one hand, detach the battery by turning the release switch on the underside of the rack.
The Safest Way to Charge Your Battery:
- First, plug the charger into the battery charging port. Place the battery inside the bike, place the charger in a flat, safe place, and connect the charger's DC output plug (tube connector (2)) to the charging port (1) on the battery side.
- Plug the charger into an electrical outlet. Connect the charger input plug (3) (110-240 volt plug) to an electrical outlet. Charging should begin, and the LED charge status indicator on the charger will show red.
- Unplug the charger from the outlet and then from the charging port. After charging, the charging indicator changes from red to green. First unplug the charger from the wall outlet, then unplug the charger output from the battery charging port.

Figure 4.1: Removable battery design and safety features.
4.2 General Care Tips
- Regularly inspect all components as per the safety checklist.
- Keep the bike clean, especially the drivetrain, to ensure smooth operation and longevity.
- Store the bike in a dry place, away from extreme temperatures.
- Ensure the battery is charged regularly, even when not in use, to maintain its health.
5. Troubleshooting
5.1 Error Code Display
If a fault occurs in the electronic system, the display will automatically show an error code. Refer to the table below for definitions.
Note: When an error code appears, troubleshoot the problem immediately. The electric bicycle will not be able to drive normally until the problem is resolved.
| Error Code | Definition |
|---|---|
| E021 | Current failure |
| E022 | Throttle failure |
| E023 | Motor phase failure |
| E024 | Hall failure |
| E025 | Brake failure |
| E030 | Communication failure |
6. Specifications
6.1 General Specifications
| Feature | Specification |
|---|---|
| Model Number | PH003 |
| Brand Name | PULUMA |
| Frame Material | Aluminum alloy |
| Front Fork | Barrel shaft all-aluminum alloy front fork |
| Wheel Size | 26 inches (26" x 4.0" Fat Tires) |
| Motor | 2x1000W Dual Brushless Motors |
| Wattage | 2000W (Total Output) |
| Max Speed | 50 KM/H |
| Battery | 48V 20Ah Removable Lithium-Ion Battery |
| Power Supply | Lithium battery |
| Range per Power | Approx. 45 KM (Pure Electric) / > 60 KM (Assisted) |
| Transmission | 7-speed |
| Brake System | Front & Rear Hydraulic Disc Brakes |
| Controller | Intelligent Vector Controller |
| Instrument | LCD display instrument |
| Axis | Sealing shaft |
| Hub | Aluminum alloy wheels |
| Charging Time | 4-6 hours |
| Maximum Climb Angle | 30° |
| Maximum Load | About 200KG |
| Weight | 41 KG (Including battery) |
| Rated Passenger Capacity | One Seat |
| Folded | No |
| Certification | CE |
6.2 Dimensions

Figure 6.1: Product dimensions for the PULUMA PH003 Electric Bike.
| Dimension | Measurement |
|---|---|
| A: Total length | 195 CM |
| B: Wheel size | 70 CM |
| C: Handle height | 120 CM |
| D: Bicycle beam | 85 CM |
| E: Minimum seat height | 85 CM |
| F: Maximum seat height | 100 CM |
| Suitable for riding height | 165-195 CM |
7. User Tips
- Tire Pressure: Always maintain recommended tire pressure for optimal performance and safety, especially with fat tires on varied terrain.
- Battery Care: For best battery life, avoid completely draining the battery and store it in a cool, dry place. Charge it regularly, even during periods of non-use.
- Gear Shifting: Practice smooth gear changes to prolong the life of the drivetrain components. Shift gears while pedaling lightly.
- Braking: Familiarize yourself with the hydraulic disc brakes. Practice emergency stops in a safe area to understand their responsiveness.
- Terrain Adaptation: Utilize the dual motor and fat tires for diverse terrains. Adjust PAS levels and gears according to the incline and surface for an efficient ride.
8. Warranty and Support
The right to interpret this instruction manual is vested in the Company and is subject to change without notice.
For any issues not covered in this manual or for further assistance, please contact the seller or manufacturer's support channels.
Disclaimer: 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.