SEAFLO SFBP1-G350-01
SEAFLO 01 Series 350 GPH Bilge Pump User Manual
Model: SFBP1-G350-01 | Brand: SEAFLO
Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the SEAFLO 01 Series 350 GPH Bilge Pump. This 12V marine submersible pump is designed for efficient water evacuation in boats and various marine applications, featuring anti-airlock protection and durable construction for reliable performance.

Image: The SEAFLO 01 Series 350 GPH Bilge Pump, a compact 12V submersible pump with a white body, orange top, and black base, featuring a 3/4-inch outlet and electrical wiring.
Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your bilge pump. Ensure all connections are secure and watertight.
Wiring and Power Requirements
- Voltage: The pump operates on 12V DC.
- Current Draw: 1.0 Amp.
- Fuse: A 3 Amp fuse is required for circuit protection.
- Wire Leads: The pump comes with 3.0 feet (1 meter) of 18 AWG marine-grade wire leads. Ensure proper polarity during connection.

Image: The bilge pump showcasing its 3-foot marine-grade wire leads and highlighting its fully submersible design, indicating its readiness for underwater operation.
Mounting and Outlet Connection
- Mounting: The pump is designed for fully submersible operation. Securely mount the pump in the lowest part of the bilge where water collects.
- Outlet Diameter: The pump features a 3/4-inch (19 mm) nylon hose barb outlet. Connect appropriate marine-grade hose to the outlet.
- Max Head: The pump can lift water up to 3.3 feet (1 meter). Consider this when planning hose routing to ensure efficient drainage.
- Activation: This is a manual bilge pump. It requires an external float switch or a manual switch for activation.

Image: Close-up view of the bilge pump's 3/4-inch nylon hose barb outlet and an illustration indicating its maximum head of 3.3 feet (1 meter).
Operating Instructions
The SEAFLO 01 Series 350 GPH Bilge Pump is designed for reliable water removal from your vessel's bilge.
Basic Operation
- Ensure the pump is properly installed and wired to a 12V power source with the recommended 3 Amp fuse.
- This pump is activated by an external switch (manual or float switch). When the switch is engaged, the pump will begin to evacuate water.
- The pump delivers a flow rate of 350 Gallons Per Hour (GPH), ensuring efficient water removal.
- The sealed motor design ensures quiet operation, minimizing disturbance.

Image: The SEAFLO bilge pump demonstrating its powerful 350 GPH flow, with water being expelled from its outlet.
Key Features in Operation
- Anti-Airlock Protection: Engineered to prevent air from becoming trapped, ensuring continuous and dependable water flow.
- Robust Motor: Features a heavy-duty, long-life motor designed for consistent performance in marine environments.
- High-Flow Impeller: Equipped with a high-flow, heavy-duty impeller for maximum water displacement.

Image: The SEAFLO bilge pump highlighting its robust and quiet motor, designed for efficient and discreet operation.
Video: A demonstration of the SEAFLO 350 GPH 01 Series Bilge Pump in operation, showcasing its water pumping capability and flow rate.
Maintenance
Regular maintenance ensures the continued efficiency and extends the lifespan of your bilge pump.
Cleaning the Strainer Base
- The pump features a snap-off strainer base for easy access and cleaning.
- Periodically remove the strainer base to clear any debris, such as leaves, hair, or other foreign objects, that may obstruct water intake.
- Rinse the strainer base and the pump's intake area with fresh water.
- Reattach the strainer base securely after cleaning.

Image: The SEAFLO bilge pump with its snap-off removable strainer base detached, illustrating the ease of maintenance and cleaning.
General Care
- Inspect the pump and wiring for any signs of wear, corrosion, or damage regularly.
- Ensure the pump's mounting is secure and free from excessive vibration.
- The pump is built with durable marine-grade construction, including a stainless steel shaft and moisture-tight seals, designed to resist corrosion in harsh saltwater conditions.
Troubleshooting
If your SEAFLO bilge pump is not operating as expected, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not run | No power to pump; Blown fuse; Faulty wiring connection; Faulty switch/float switch. | Check power supply and battery; Replace fuse; Inspect and secure all wiring connections; Test and replace switch/float switch if necessary. |
| Pump runs but no water is discharged | Clogged intake/strainer; Airlock; Kinked or blocked discharge hose; Impeller damage. | Clean strainer base and intake; Dislodge airlock by tilting pump or cycling power; Clear discharge hose obstruction; Inspect impeller for damage and replace pump if necessary. |
| Low flow rate | Partially clogged strainer; Low voltage; Excessive head (too high lift); Worn impeller. | Clean strainer; Check battery voltage and charging system; Reduce discharge hose length or optimize routing; Inspect impeller for wear. |
Specifications
Detailed technical specifications for the SEAFLO 01 Series 350 GPH Bilge Pump:
- Model Number: SFBP1-G350-01
- Voltage: 12V DC
- Flow Rate: 350 GPH (Gallons Per Hour) / 1324 LPH (Liters Per Hour)
- Current Draw: 1.0 A
- Max Head: 3.3 feet (1 meter)
- Outlet Diameter: 3/4 inch (19 mm)
- Wire Lead Length: 3.0 feet (1 meter)
- Product Dimensions: 3.57"L x 2.77"W x 4.25"H
- Item Weight: 7.2 ounces
- Material: Stainless Steel shaft, ABS housing
- Certifications: CE, RoHS, ISO 8846, ISO 8849

Image: A graph illustrating the performance curve of the 12V bilge pump, showing head versus flow rate, accompanied by a table detailing current draw, GPH, LPH, and head values.

Image: Technical drawing of the SEAFLO bilge pump with detailed dimensions in inches and millimeters, alongside a table summarizing key specifications like model number, voltage, flow rate, current, outlet size, and wire lead length.
Warranty and Support
The SEAFLO 01 Series 350 GPH Bilge Pump is backed by a 4-Year Limited Warranty, ensuring durability and dependable performance. For warranty claims, technical support, or any inquiries, please contact SEAFLO customer service through their official channels or the retailer from whom the product was purchased.
For more information, you may visit the official SEAFLO Store: SEAFLO Store on Amazon.
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