Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the DEFIPRO 901F-150900 Electric Fuel Pump Assembly. This product is engineered to meet or exceed OEM specifications, ensuring reliable and efficient fuel delivery for your vehicle. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Image: The complete 901F-150900 Electric Fuel Pump Assembly, including the pump core, strainer, and tank seal.
Vehicle Compatibility
The 901F-150900 electric fuel pump assembly is designed as a direct replacement for specific CF-Moto ATV models and OEM part numbers. Verify your vehicle's model and year against the list below to ensure proper fitment.
Compatible CF-Moto ATV Models:
- CFORCE 400 / 400s (2016-2022)
- CFORCE 500 / 500s HO EPS (2013-2022)
- CFORCE 600 Touring (2013-2022)
- CFORCE 800
- X5 Long/Short Short Wheel Base (2011-2012)
- X6 Long/Short Short Wheel Base (2012)
Replaces OEM Part Numbers:
- 901F-150900
- 901F150900
- 901F-150900-10000
- 39500-115H-0000
- 358700002
- 16521-055-0000
Important Note: Always compare the appearance of the replacement part with your original unit and confirm the OE number, vehicle model, and year before purchase to guarantee precise compatibility and high performance.

Image: Visual representation of compatible CF-Moto ATV models and the OEM part numbers this fuel pump assembly replaces.
Product Features
The DEFIPRO 901F-150900 Fuel Pump Assembly is designed with several key features to ensure optimal performance and durability:
- OEM Quality: Engineered to meet or exceed original equipment manufacturer specifications for reliable and consistent fuel delivery.
- Durable Construction: Made from strong, durable materials resistant to deformation, cracking, and wear, extending service life.
- High Temperature Resistance: Built to withstand high operating temperatures.
- Corrosion Protection: Designed with materials that resist corrosion, ensuring longevity in various conditions.
- Noise Reduction: Features designed to minimize operational noise.
- Current Stability: Provides stable electrical current for consistent performance.
- Fast Speed & Long Lifespan: Optimized for quick response and extended operational life.
- Resolves Fuel Supply Issues: Effectively addresses problems like negative start and acceleration due to insufficient fuel supply.
- Standard Interface: Ensures excellent electric connection performance and a perfect fit for the original wire harness joint.

Image: A detailed view of the fuel pump assembly, emphasizing its robust construction and internal components.

Image: A close-up of the standard electrical connector, ensuring compatibility with existing vehicle wiring.
Installation Guide
The DEFIPRO 901F-150900 Fuel Pump Assembly is designed for easy, direct plug-in installation, replacing your original unit without significant modifications. While professional installation is recommended, experienced DIYers can perform this task by following proper vehicle service procedures.
General Installation Steps:
- Safety First: Ensure the vehicle is turned off, the battery is disconnected, and appropriate safety gear (gloves, eye protection) is worn. Work in a well-ventilated area.
- Depressurize Fuel System: Consult your vehicle's service manual for the correct procedure to safely depressurize the fuel system.
- Access Fuel Tank: Locate and access the fuel tank and the existing fuel pump assembly. This may involve removing seats, covers, or other components.
- Disconnect Components: Carefully disconnect electrical connectors, fuel lines, and any mounting hardware from the old fuel pump assembly. Be prepared for residual fuel.
- Remove Old Assembly: Remove the old fuel pump assembly from the tank.
- Install New Assembly: Insert the new DEFIPRO 901F-150900 fuel pump assembly into the fuel tank. Ensure the tank seal is properly seated to prevent leaks.
- Reconnect Components: Reconnect all fuel lines and electrical connectors securely. Double-check all connections.
- Reassemble Vehicle: Reinstall any removed vehicle components.
- Test System: Reconnect the battery. Turn the ignition to the "ON" position (without starting the engine) a few times to allow the fuel pump to prime the system. Check for any fuel leaks.
- Start Engine: Start the engine and check for proper operation and any warning lights.
This comprehensive kit includes all necessary worn parts such as the fuel pump, tank seal, and other components for a complete replacement.

Image: A person performing maintenance on a vehicle, illustrating the context of installation.
Operation
The DEFIPRO 901F-150900 Electric Fuel Pump Assembly operates automatically as part of your vehicle's fuel system. Its primary function is to draw fuel from the tank and deliver it under pressure to the engine's fuel injection system. When the ignition is turned on, the pump primes the system, and during engine operation, it continuously supplies fuel to meet engine demands. This ensures consistent engine performance and efficient fuel combustion.
Maintenance
While the DEFIPRO fuel pump assembly is designed for durability and minimal maintenance, adhering to general vehicle maintenance practices can help ensure its longevity and optimal performance:
- Keep Fuel Tank Full: Avoid consistently running your fuel tank to near empty. Fuel helps cool and lubricate the fuel pump.
- Use Quality Fuel: Use clean, high-quality fuel as recommended by your vehicle manufacturer to prevent contaminants from damaging the pump or strainer.
- Regular Fuel Filter Replacement: If your vehicle has an external fuel filter, replace it according to your vehicle's service schedule. A clogged fuel filter can put undue strain on the fuel pump.
- Inspect Fuel Lines: Periodically check fuel lines for any signs of leaks, cracks, or damage.
- Address Warning Signs Promptly: If you notice any symptoms of a failing fuel pump (see Troubleshooting section), address them promptly to prevent further damage.
Troubleshooting
If you suspect an issue with your fuel pump assembly, consider the following common symptoms and diagnostic methods:
| Symptom | Possible Cause | Action |
|---|---|---|
| Engine won't start or idles roughly | Insufficient fuel pressure or delivery from the pump. | Check fuel pressure with a gauge. Inspect fuel lines for blockages. Ensure electrical connection to pump is secure. |
| Loud whining sound from fuel pump area | Fuel pump is struggling, possibly due to low fuel level, clogged strainer/filter, or internal wear. | Ensure adequate fuel in tank. Inspect fuel strainer for clogs. Consider professional diagnosis. |
| Engine "surging" or hesitating during acceleration | Inconsistent fuel supply, often due to a failing pump or restricted fuel flow. | Check fuel pressure under load. Inspect fuel filter and lines. |
| Reduced engine performance or power | Fuel pump not delivering sufficient volume or pressure. | Verify fuel pressure and flow rate against vehicle specifications. |
If these basic troubleshooting steps do not resolve the issue, it is recommended to consult a qualified mechanic or contact DEFIPRO customer support for further assistance.
Product Specifications
| Specification | Detail |
|---|---|
| Brand | DEFIPRO |
| Model Number | 901F-150900 |
| OEM Part Numbers | 901F-150900, 901F150900, 901F-150900-10000 |
| Vehicle Service Type | ATV |
| Fit Type | Vehicle Specific Fit |
| Material | Metal, Cast Iron (Body Material) |
| Operation Mode | Electric |
| Mounting Type | Tank Mount |
| Item Weight | 1.48 pounds |
| Package Dimensions | 12.17 x 7.52 x 5.43 inches |
| Specification Met | OE |
Package Contents
Each DEFIPRO 901F-150900 Fuel Pump Assembly package includes the following components:
- 1 x Fuel Pump Core
- 1 x Strainer
- 1 x Fuel Pump Module Assembly (as pictured)
- 1 x Tank Seal
- 1 x Lock Ring

Image: An exploded view illustrating the individual components included in the fuel pump assembly package.
Warranty and Customer Support
DEFIPRO stands behind the quality of its products. The 901F-150900 Fuel Pump Assembly comes with a 12-month hassle-free product return service.
If you encounter any problems during the use of this product, please do not hesitate to contact DEFIPRO customer support. We are committed to providing a satisfactory answer and resolution within hours.
For further assistance, you may also visit the official DEFIPRO store on Amazon: DEFIPRO Amazon Store.