Franklin Electric FNSGF Gas Engine Self-Priming Pump & Parts
FNSGF Pump Manuals & Repair Resources
The Franklin Electric FNSGF Series gas engine-driven self-priming pump is built for water transfer and temporary irrigation when a portable pump must deliver reliable flow and pressure without an electrical supply. Its enclosed cast iron impeller, diffuser and self-priming arrangement make the series suitable for applications involving relatively clean water, including irrigation, construction and commercial water transfer.
The current Franklin Electric ordering catalog lists two Honda-powered FNSGF configurations: FNSGF-5H (item 90272105) and FNSGF-8H (item 90272108). This page also retains earlier Briggs & Stratton, diesel FNSDF, engine and repair-part references to help identify existing equipment. Contact Ken’s Distributing Company to confirm a specific model, engine or replacement part before placing an order.
Franklin Electric FNSGF Pump Specifications
| Pump type | Gas engine-driven, self-priming centrifugal |
|---|---|
| Current listed models | FNSGF-5H and FNSGF-8H |
| Series maximum capacity | Up to 165 GPM |
| Series maximum head | Up to 185 ft |
| Maximum working pressure | 120 PSI |
| Maximum liquid temperature | 200 °F |
| Volute and impeller | Cast iron; enclosed impeller |
| Mechanical seal | Carbon/ceramic faces, FKM elastomers and stainless steel components |
| Pipe connections | Threaded NPT / FNPT; size varies by model |
| Rotation | Clockwise when viewed from the engine/shaft end |
| Mounting orientation | Horizontal |
The maximum flow, head and working pressure figures are separate published series limits; they do not represent a single simultaneous operating point. Use the performance information and your required flow, pressure and suction conditions to select a model.
Current FNSGF Pump Models and Ordering Information
These Honda-powered configurations appear in the manufacturer’s current ordering catalog. The item numbers link to their model-specific Kendisco pages.
| Model | Order Number | Engine | Displacement | Suction NPT | Discharge NPT | Low-Oil Shutoff | Weight |
|---|---|---|---|---|---|---|---|
| FNSGF-5H | 90272105 | Honda | 160 cc | 2 in. | 2 in. | Yes | 94 lb |
| FNSGF-8H | 90272108 | Honda | 270 cc | 2-1/2 in. | 2 in. | Yes | 118 lb |
Additional Gasoline and Diesel Model References
The following models and item numbers were listed in older Kendisco ordering information. They are historical identification references, not a statement of current manufacturer availability. Verify the complete model code, engine, production date and availability before quoting or ordering. FNSDF designates the diesel variants.
| Model | Order Number | Historical Engine Description | Suction x Discharge (NPT) | Listed Low-Oil Shutoff | Listed Weight |
|---|---|---|---|---|---|
| FNSGF-5 | 90272005 | Briggs & Stratton INTEK | 2 x 2 in. | No | 94 lb |
| FNSGF-8 | 90272008 | Briggs & Stratton INTEK | 2-1/2 x 2 in. | No | 118 lb |
| FNSDF-5 | 90274005 | Kohler diesel | 2 x 2 in. | No | 134 lb |
| FNSDF-8-ES | 90274108 | Kohler diesel, electric-start variant | 2-1/2 x 2 in. | Yes | 145 lb |
| FNSDF-8 | 90274008 | Kohler diesel | 2-1/2 x 2 in. | No | 145 lb |
FNSGF Performance: Flow at Discharge Pressure
Franklin’s published performance table below reports U.S. gallons per minute at the stated discharge pressure with 5 feet of suction lift. Actual results vary with installation and system conditions.
| Model | 10 PSI | 20 PSI | 30 PSI | 40 PSI | 50 PSI | 60 PSI | 70 PSI | 80 PSI |
|---|---|---|---|---|---|---|---|---|
| FNSGF-5H | 132 | 115 | 106 | 85 | 70 | 52 | Not listed | Not listed |
| FNSGF-8H | 165 | 162 | 145 | 125 | 110 | 85 | 50 | 30 |
Features and Applications
- Self-priming cast iron volute: Tapped openings support initial filling, venting and draining. The built-in check valve helps the pump retain prime between operating cycles when the system is correctly installed and maintained.
- Enclosed cast iron impeller and diffuser: Designed for higher-head water-transfer service. This pump is not a substitute for a solids-handling trash pump.
- Engine-driven operation: Honda-powered current models use an air-cooled, four-stroke engine and adjustable throttle control for portable operation.
- Replaceable service parts: Mechanical shaft seals, impellers, check-valve components, gaskets and other service items can be identified by model and figure number in the reference tables below.
- Typical applications: Temporary irrigation, commercial water transfer, construction water supply, municipal support and light industrial water movement where liquid conditions and required head fall within the pump’s specifications.
FNSGF Replacement Parts and Exploded Diagram
Use the exploded view and parts references to identify the correct component for an existing pump. The matrix below includes older FNSGF model designations as well as the current Honda configurations; parts compatibility must be confirmed by full model and production information.
| Fig. No. | Part Description | Part No. | Materials of Construction | |||
|---|---|---|---|---|---|---|
| FNSGF-5 | FNSGF-5H | FNSGF-8 | FNSGF-8H | |||
| 1 | FNSGF Pump Case | 305460013 | Cast Iron, ASTM-A48 CL30 | |||
| 2 | FNSGF Impeller | 305459004 | 305460014 | Cast Iron, ASTM-A48 CL30 | ||
| 3 | FNSGF Motor Adapter | 305460015 | 305460016 | Cast Iron, ASTM-A48 CL30 | ||
| 12 | FNSGF Sleeve | 305458010 | 305459011 | 416 Stainless Steel | ||
| 70 | FNSGF Base, Engine Frame | 305460017 | 305459016 | CRS | ||
| 72 | FNSGF Check Valve | 305455010 | 305460018 | Cast Iron, ASTM-A48 CL30 | ||
| 73A | FNSGF Top Weight – Check Valve | 305455011 | Cast Iron, ASTM-A48 CL30 | |||
| 73B | FNSGF Bottom Weight – Check Valve | 305455012 | Cast Iron, ASTM-A48 CL30 | |||
| 74 | FNSGF Diffuser | 305460019 | Cast Iron, ASTM-A48 CL30 | |||
| 77 | FNSGF Handle | 305460020 | 305459018 | 305459019 | CRS | |
| 90 | FNSGF Mechanical Shaft Seal | 305463116 | 305463043 | CARB/CER x FKM-SS | ||
| 100A | FNSGF Case Gasket | 305463130 | Neoprene | |||
| 100B | FNSGF Flapper Valve | 305454043 | Neoprene | |||
| 100C | FNSGF Square-Ring – Volute | 305463131 | Nitrile | |||
| 200 | FNSGF Engine | See Below | Misc. | |||
| 500 | FNSGF Pipe Plug 3/4″ (2 Req.) | 305463050 | CAD-Plated Steel | |||
| 503 | FNSGF Water Slinger | 305458022 | 305456009 | Neoprene | ||
| 530A | FNSGF Nut, Flapper | 305463082 | 300 Series Stainless Steel | |||
| 530B | FNSGF Washer, Flapper | 305463084 | 300 Series Stainless Steel | |||
| 530C | FNSGF Flapper Bolt | 305463080 | 316 Stainless Steel | |||
| 530D | FNSGF Hex Bolts – Volute (4 Pack) | 305463064 | Zinc-Plated Steel | |||
| 530E | FNSGF Hex Bolt – Motor Adapter (4 Pack) | 305463120 | 305463214 | Zinc-Plated Steel | ||
| 530F | FNSGF Collar Seal – Motor Adapter (4 Pack) | 305463107 | N/A | Nylon | ||
| Not Shown | FNSGF Lockwasher – Motor Adapter (4 Pack) | N/A | 305463010 | Zinc-Plated Steel | ||
| 530G | FNSGF Hex Bolt – Check Valve (12 Pack) | 305463010 | Zinc-Plated Steel | |||
| 530H | FNSGF Hex Bolt – Base (4 Pack) | N/A | 305463132 | 305463090 | Zinc-Plated Steel | |
| 530J | FNSGF Hex Nut – Base (4 Pack) | 305463062 | Zinc-Plated Steel | |||
| 530K | FNSGF Lockwasher – Base (4 Pack) | 305463092 | Zinc-Plated Steel | |||
| 530L | FNSGF Washer – Base (4 Pack) | 305463109 | Zinc-Plated Steel | |||
| 530M | FNSGF Bolt – Base Volute (4 Pack) | 305463064 | Zinc-Plated Steel | |||
| 530N | FNSGF Washer – Base Volute (4 Pack) | 305463064 | Zinc-Plated Steel | |||
| 530P | FNSGF Lockwasher – Base Volute (6 Pack) | 305463137 | Zinc-Plated Steel | |||
| 532 | FNSGF Spacer (4 Pack) | 305463213 | 305463215 | Cast Iron | ||
Parts-reference update: Franklin’s current FNSGF catalog lists part 305463132 for the FNSGF-5H base hex bolt (figure 530H) and 305463137 for the base-volute lock washer (figure 530P). An older Kendisco record gave 305463032 for figure 530P. Confirm the correct part against the pump’s serial number and production revision before ordering.
Engine and Motor Reference Numbers
These engine-related part numbers are retained from the original Kendisco catalog, including historical gasoline and diesel references. Confirm availability and interchangeability for the specific engine model.
| Model | Motor Description | Part No. |
|---|---|---|
| FNSGF-5 | Eng B/S 120232-0136-B8 206CC | 201915 |
| FNSGF-5H | Eng Honda GX160UT1TX2 5.5 hp OHV | 202001 |
| FNSGF-8 | Eng B/S 201332-0158-B1 305CC | 201918 |
| FNSGF-8H | Eng Honda GX270UTPA2 9 hp OHV | 202002 |
| FNSDF-5 | Eng Kohler KD350-5001 6.7 hp | 202061 |
| FNSDF-8-ES | Eng Kohler KD420-4001-9001 9.8 hp | 202065 |
| FNSDF-8 | Eng Kohler KD420-3100 9.8 hp | 202064 |
Replacement Pump End Kits (Without Engine)
Franklin’s engine-driven pump catalog also lists the following pump-end kits, supplied without an engine. Match the kit’s shaft size and installation requirements before ordering.
| Kit | Order Number | Shaft Type | Shaft Size | Kit Weight |
|---|---|---|---|---|
| FNSGF-5PEK | 90275005 | Threaded | 5/8 in. | 62 lb |
| FNSGF-8PEK | 90275008 | Threaded | 1 in. | 76 lb |
FNSGF Dimensions
Dimensions are provided for estimating purposes. All dimensions are in inches and correspond to the dimensional drawing.
| Model | Discharge (in.) | Suction (in.) | A | B | C | D | E |
|---|---|---|---|---|---|---|---|
| FNSGF-5H | 2 | 2 | 9.75 | 13.50 | 16.20 | 20.25 | 14.38 |
| FNSGF-8H | 2 | 2-1/2 | 13.00 | 17.00 | 17.31 | 23.66 | 17.75 |
FNSGF Performance Curve
Installation and Pump Selection Notes
- Initial filling: Fill the casing with water before starting. Never run the pump dry. Successful repeat priming depends on a working built-in check valve and an airtight suction system.
- Pipe and hose sizes: Use model-specific NPT connection dimensions. FNSGF-8H has a larger 2-1/2-inch suction connection and a 2-inch discharge connection.
- Engine setup: Follow the supplied Honda engine owner’s manual and pump manual for engine oil, fuel, safe ventilation and operating procedures.
- Water quality: The enclosed impeller is intended for water-transfer service. If the water contains substantial sediment or debris, review a more appropriate solids-handling pump such as the FMIG series.
- Model selection: Choose by required flow at operating head, suction lift, port size, engine configuration and compatibility with the intended liquid.
Frequently Asked Questions About Franklin Electric FNSGF Pumps
What is the difference between FNSGF-5H and FNSGF-8H?
The FNSGF-5H uses a 160 cc Honda engine with 2-inch suction and discharge ports. The FNSGF-8H uses a 270 cc Honda engine with a 2-1/2-inch suction and 2-inch discharge. Their flow ratings also differ across the published pressure curve; compare performance at your actual system head before selecting a model.
Does the FNSGF pump need to be primed?
Yes. Fill the pump casing before initial startup. The self-priming design and built-in check valve can support subsequent starts when the system retains liquid and the suction plumbing is airtight. Check the manufacturer’s manual before operation.
Is the FNSGF suitable for water containing sand or debris?
The enclosed impeller is intended primarily for relatively clean water and higher-pressure transfer duties. For water with significant suspended solids, ask Ken’s Distributing Company about a suitable semi-open-impeller or solids-handling alternative.
Are Briggs & Stratton or Kohler diesel models available?
Older Kendisco catalogs list Briggs & Stratton gasoline FNSGF models and Kohler diesel FNSDF variants. Franklin’s current FNSGF ordering page lists the Honda-powered FNSGF-5H and FNSGF-8H. Contact Ken’s Distributing Company for the status of historical engine configurations or replacement parts.
Can I order FNSGF pump-end kits or repair parts separately?
Franklin’s catalog includes FNSGF-5PEK and FNSGF-8PEK pump-end kit references. Pump cases, impellers, seals, diffuser and check-valve components are identified in the parts table. Supply the model and engine or pump serial number when requesting a replacement component.
Related Franklin Electric Pumps and Replacement Parts
- Franklin Electric FBSGF gas engine self-priming pumps
- Franklin Electric FMIG gas engine self-priming pumps
- Franklin Electric FMIH hydraulic-driven self-priming pump
- Franklin Electric replacement parts and pump kits
Request a Quote for an FNSGF Pump or Replacement Part
Contact Ken’s Distributing Company to discuss an FNSGF-5H or FNSGF-8H pump, an older FNSGF or FNSDF unit, or a replacement component. Share your model or item number and the flow, head and application requirements so the team can help identify the appropriate product. Call 303-699-7845 or use the quote form on this product page.
Send us your model number and we will confirm fit, price, and availability.