1. Introduction
This manual provides essential information for the safe and effective operation, assembly, and maintenance of your X-PRO 125cc Vader Adult Gas Motorcycle. Please read this manual thoroughly before operating the motorcycle to ensure your safety and to prevent damage to the vehicle. This motorcycle is designed for street use only and is not intended for highway operation.
The X-PRO 125cc Vader is a compact and agile street bike, featuring a 125cc engine, front and rear disc brakes, and a comfortable design for urban commuting and recreational riding.

Figure 1.1: Front-side view of the X-PRO 125cc Vader Adult Gas Motorcycle in red.
2. Safety Information
Your safety is paramount. Always adhere to the following safety guidelines:
- Wear Protective Gear: Always wear an approved helmet, eye protection, gloves, sturdy footwear, and appropriate riding apparel.
- Pre-Ride Inspection: Before each ride, perform a thorough inspection of the motorcycle. Check tire pressure, brake function, fluid levels, lights, and chain tension.
- Road Legal Use: This motorcycle is for street use only and is not designed for highway speeds. Always obey all local traffic laws and regulations.
- Manufacturer Statement of Origin (MSO) and Bill of Sale: The MSO and Bill of Sale paperwork will be sent to you by separate mail. These documents are crucial for registration and titling. Do not attempt to register or title the vehicle before receiving these documents and confirming the product is satisfactory.
- Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
3. Setup and Initial Assembly
The X-PRO 125cc Vader motorcycle requires some assembly upon arrival. It is recommended to have basic mechanical knowledge or seek professional assistance for assembly.
3.1 Unboxing and Inspection
Upon receiving your motorcycle, carefully inspect the packaging for any signs of damage. Document any damage with photographs before opening.

Figure 3.1: The X-PRO 125cc Vader Adult Gas Motorcycle as packaged for shipping.
3.2 Assembly Steps
The following components typically require assembly:
- Rear Shock
- Handlebar
- Wheels
- Brakes
- Hub Odometer Counter
- Battery
Ensure all fasteners are tightened to the manufacturer's specifications. Refer to the detailed assembly video provided by the manufacturer for visual guidance.
3.3 Battery Installation and Initial Charge
Locate the battery compartment. Install the battery, ensuring correct polarity. It is recommended to fully charge the battery before the first use to ensure optimal performance and longevity.
4. Operating Instructions
Familiarize yourself with the controls and functions of your motorcycle before riding.
4.1 Controls Overview

Figure 4.1: Front view highlighting the headlight and handlebar controls.
- Ignition Switch: Located near the handlebars, used to turn the motorcycle on/off.
- Throttle: Right handlebar grip, controls engine speed.
- Brakes: Front and Rear Disc brakes provide strong, reliable stopping power. The front brake lever is on the right handlebar, and the rear brake pedal is on the right footrest.
- Lights: Large headlight and taillight maximize nighttime visibility. Operate via handlebar switches.
- Horn: Button located on the left handlebar.
- Gear Shifter: Foot pedal on the left side for changing gears.
4.2 Starting the Engine
- Ensure the motorcycle is in neutral.
- Turn the ignition key to the 'ON' position.
- If equipped, pull the choke lever (for cold starts).
- Press the electric start button or use the kickstarter.
- Allow the engine to warm up for a short period before riding.
4.3 Riding the Motorcycle
Engage the clutch, select first gear, and smoothly release the clutch while applying throttle. Practice braking and turning in a safe, open area before riding in traffic. The 120/70-12 front and 130/70-12 rear tires offer great traction for stable riding.
5. Maintenance
Regular maintenance is crucial for the longevity and safe operation of your X-PRO 125cc Vader motorcycle.
5.1 Routine Checks
- Tires: Check tire pressure and tread wear regularly.
- Oil: Monitor engine oil level and change according to the maintenance schedule.
- Chain: Inspect chain tension and lubrication. Adjust and lubricate as needed.
- Brakes: Check brake fluid levels and inspect brake pads for wear. Ensure proper brake lever/pedal free play.
- Lights and Signals: Verify all lights (headlight, taillight, turn signals) and the horn are functioning correctly.
- Fasteners: Periodically check all nuts and bolts for tightness, especially on critical components like the engine mounts and fuel system. Ensure fuel bowl bolts are securely fastened to prevent fuel leaks.
5.2 Cleaning and Storage
Clean your motorcycle regularly to prevent corrosion. For long-term storage, ensure the fuel tank is full (with stabilizer if necessary), the battery is charged, and the motorcycle is covered in a dry area.
6. Troubleshooting
This section addresses common issues you might encounter with your motorcycle.
6.1 Engine Will Not Start
- Check Fuel: Ensure there is sufficient fuel in the tank.
- Ignition: Verify the ignition key is in the 'ON' position and the kill switch is not engaged.
- Battery: Check battery charge. A weak battery may prevent the starter from engaging.
- Spark Plug: Inspect the spark plug for fouling or damage.
6.2 Speedometer Malfunction
If the speedometer is not functioning or providing inaccurate readings, check the speed sensor and its wiring for any disconnections or damage. Ensure the gauge cluster is properly connected. If issues persist, professional diagnosis may be required.
6.3 Unusual Noises or Vibrations
Immediately investigate any new or unusual noises or vibrations. This could indicate loose components, worn parts, or internal engine issues. Pay particular attention to engine mounts and chain tension.
For complex issues or repairs, it is highly recommended to consult a qualified motorcycle mechanic.
7. Specifications
Key technical specifications for the X-PRO 125cc Vader Adult Gas Motorcycle (Model MC-N020):
| Feature | Specification |
|---|---|
| Model Number | MC-N020 |
| Engine Displacement | 125cc |
| Brake Type | Front and Rear Disc |
| Front Tire Size | 120/70-12 |
| Rear Tire Size | 130/70-12 |
| Color | Red |
| Manufacturer | X-Pro |
| UPC | 754169633981 |
8. Warranty and Support
For specific warranty details and terms, please refer to the documentation provided with your purchase or contact X-PRO customer support directly. XPROUSA is committed to providing reliable support and parts for their vehicles.
Ensure you retain your Manufacturer Statement of Origin (MSO) and Bill of Sale, as these are essential for any warranty claims or registration processes.
