Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your SEAFLO 12V Submersible/Inline Transfer Pump. Please read this manual thoroughly before use and retain it for future reference.
The SEAFLO SFSP1-G280-02 pump is designed for versatile applications, capable of transferring fresh water, saltwater, and diesel. Its compact and durable design makes it suitable for marine, RV, and various other uses requiring fluid transfer.
Safety Instructions
- Always disconnect power before installing, servicing, or performing any maintenance on the pump.
- Ensure the power source is 12V DC. Connecting to an incorrect voltage can damage the pump and pose a safety risk.
- Do not pump flammable liquids other than diesel. This pump is not designed for gasoline or other highly volatile fuels.
- Ensure proper ventilation when pumping diesel to avoid fume accumulation.
- Keep hands and loose clothing away from moving parts during operation.
- Do not run the pump dry for extended periods, as this can cause overheating and damage.
- The pump is designed for intermittent duty (approximately 20 minutes of continuous operation). Allow for cooling periods between uses.
- Protect electrical connections from moisture to prevent short circuits.
Product Specifications
| Specification | Value |
|---|---|
| Model | SFSP1-G280-02 |
| Voltage | 12 Volts DC |
| Maximum Flow Rate | 280 Gallons Per Hour (4.7 GPM) |
| Maximum Lifting Height (Head) | 23 Feet (7 meters) |
| Current Draw | 4.0 A (Max Draw: 7.5 A) |
| Wire Lead Length | 16.4 FT (5 meters) |
| Outlet Diameter | 1/2 inch (12mm) |
| Product Dimensions | 1.62"L x 1.62"W x 6.91"H |
| Item Weight | 1.19 Pounds |
| Material | Stainless Steel |
| Max Water Temperature | 104°F (40°C) |
| Max Diesel Temperature | 176°F (80°C) |
| Duty Cycle | Intermittent (approx. 20 minutes) |
Package Contents
- 1 x SEAFLO 12V Submersible/Inline Transfer Pump (Model: SFSP1-G280-02)
- 1 x Set of Battery Clips
- 1 x Removable Filter Screen
Setup and Installation
Prepare the Pump:
Unpack the pump and inspect it for any visible damage. Ensure all components listed in the package contents are present.

Image: The SEAFLO 12V Submersible/Inline Transfer Pump, showing its compact orange body, black filter screen, and attached power cable with red and black battery clips.
Attach Hose:
Connect a 1/2 inch (12mm) inner diameter hose to the pump's outlet joint. Ensure the connection is secure to prevent leaks during operation.

Image: A close-up view of the pump's water outlet joint, highlighting the durable plastic connection point for a hose. This image also shows a diagram illustrating how the pump can be used to transfer water between tanks, either submerged or inline.
Power Connection:
Connect the red battery clip to the positive (+) terminal of a 12V DC power source (e.g., car battery, marine battery). Connect the black battery clip to the negative (-) terminal. Ensure a secure and clean connection to prevent arcing or poor performance.

Image: The SEAFLO pump in its retail packaging, clearly showing the pump unit and the included battery clips, emphasizing the ease of power connection.
Positioning the Pump:
The pump can be used either fully submerged in the liquid or inline. For submersible use, ensure the pump is fully immersed before starting. For inline use, ensure the pump is positioned to draw liquid efficiently.
Operating Instructions
Fluid Compatibility:
This pump is designed for fresh water, saltwater, and diesel. Do not use with gasoline, corrosive chemicals, or highly viscous liquids.

Image: Visual representation with icons confirming the pump's compatibility with diesel, freshwater, and saltwater, set against a background of a boat in water.
Starting the Pump:
Once the pump is properly connected and positioned, apply 12V DC power. The pump will begin transferring the liquid. Ensure the discharge hose is directed to the desired location.
Monitoring Operation:
Observe the flow rate and listen for any unusual noises. The pump is designed for quiet operation. If excessive noise or reduced flow is observed, refer to the troubleshooting section.
Stopping the Pump:
To stop the pump, disconnect the 12V DC power supply. It is recommended to disconnect the power by detaching the battery clips.
Intermittent Duty Cycle:
The pump is rated for intermittent duty, meaning it should not be run continuously for more than approximately 20 minutes. Allow the pump to cool down for an equal amount of time before resuming operation to prevent overheating and extend its lifespan.
Maintenance
Cleaning the Filter Screen:
The pump features a removable filter screen at its base. Regularly inspect and clean this screen to prevent debris from entering the pump and affecting performance. To clean, twist and pull off the black filter screen, rinse it thoroughly, and reattach.

Image: A detailed view of the pump's base, showing the black removable filter screen. Text indicates that the screen can be removed for cleaning to prevent debris from damaging the pump's internal components.
Storage:
When not in use, clean the pump thoroughly, especially if used with saltwater or diesel. Store the pump in a dry, cool place, away from direct sunlight and extreme temperatures.
General Inspection:
Periodically check the power cable and battery clips for any signs of wear, fraying, or corrosion. Ensure all connections remain secure.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start. | No power, incorrect voltage, loose connections, faulty power source. | Check 12V power supply. Ensure battery clips are securely connected to correct terminals. Test power source. |
| Low flow or no flow. | Clogged filter screen, air lock, kinked hose, insufficient liquid level, pump running dry. | Clean filter screen. Ensure pump is fully submerged or primed for inline use. Check hose for obstructions. Ensure adequate liquid supply. Do not run dry. |
| Pump is noisy. | Debris in pump, running dry, worn components. | Clean filter screen and check for internal debris. Ensure pump is not running dry. If noise persists, contact support. |
| Pump overheats. | Extended continuous operation, running dry, excessive back pressure. | Adhere to intermittent duty cycle (20 minutes max). Ensure pump is not running dry. Check for kinks or blockages in the discharge hose. |
Warranty and Support
SEAFLO offers a 4-year warranty on this product, covering defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
For technical support, warranty claims, or further assistance, please contact SEAFLO customer service. You can find contact information on the official SEAFLO website or through your retailer.
For more information, visit the official SEAFLO store: SEAFLO Store
Additional Resources
For visual guidance on pump operation and features, please refer to the following official product videos:
No official product videos from the seller were found in the provided data.