Franklin Electric Gas Engine Driven Self-Priming Pumps
- Choose from the FMIG, FNSGF, and FBSGF series
- Honda, Kohler, and Briggs and Stratton engines, no power line needed
- FMIG moves up to 300 GPM and passes 10% solids
- FNSGF enclosed impeller builds higher pressure
- Port sizes from 2 inch up to 4 inch
- Send us your model number and we will confirm the right fit
Floodwater is rising in a trench a long way from the nearest outlet, and a Franklin Electric gas engine driven self-priming pump can start moving it as soon as the casing is filled and the engine fires. The pump clears its own suction line, so nobody has to fight with a foot valve. The FMIG, FNSGF, and FBSGF each handle that job with a different impeller, engine, and port size.
All three share cast iron volutes and carbon and ceramic seals with FKM elastomers. The impeller is what sets them apart, and it decides whether you get solids handling, pressure, or plain dependable transfer.
Six Engine and Port Combinations
| Model | Engine | Suction x discharge | Impeller | Strength |
|---|---|---|---|---|
| FMIG30-13H | Honda 289 cc | 3 in x 3 in | Semi-open cast iron, wear plate | Solids up to 10% by volume |
| FMIG40-18K | Kohler 624 cc | 4 in x 4 in | Semi-open cast iron, wear plate | Full 300 GPM capacity |
| FNSGF-5H | Honda 160 cc | 2 in x 2 in | Enclosed cast iron | Higher pressure |
| FNSGF-8H | Honda 270 cc | 2.5 in x 2 in | Enclosed cast iron | Higher pressure, more power |
| FBSGF-8 | Briggs and Stratton 127 cc | 2 in x 2 in | Semi-open cast iron, blind hole | Light portable transfer |
| FBSGF-10 | Briggs and Stratton 205 cc | 2 in x 2 in | Semi-open cast iron, blind hole | More flow than the FBSGF-8 |
Franklin also builds Honda-powered FBSGF models, including a 3 inch FBSGF-12H. Ask us if you want Honda power on a general service pump.
Solids, Pressure, or Light Transfer: Three Impellers
Match the impeller to the water. Muddy, sandy water and big volume point to the FMIG and its semi-open impeller. Long hose runs and sprinklers point to the enclosed FNSGF, and quick 2 inch draining or filling points to the FBSGF.
FMIG: 300 GPM and a Replaceable Wear Plate
The FMIG is the gas-powered twin of the electric FMIT frame mount pump. It delivers up to 300 GPM and up to 60 PSI.
A replaceable steel wear plate takes the abuse from sand, so you replace a plate instead of a pump. A check valve built into the front cover holds water in the casing between runs.
FNSGF: Enclosed Impeller for Pressure
An enclosed impeller has shrouds on both sides of its vanes. That design builds more pressure at the same engine speed than a semi-open impeller.
Both models run Honda engines with adjustable throttle controls.
FBSGF: Compact 2 Inch Transfer
The FBSGF is the lightest option for draining, filling, and short irrigation runs. Its impeller has a blind hole, so the pumped water never touches the engine shaft threads.
Both Briggs and Stratton models use 2 inch connections, and the FBSGF-10 has the larger engine for more flow.
Lift, Hose Run, and Water: Check These First
- Lift: measure from the water surface up to the pump inlet.
- Run: add hose length and any rise to the discharge point.
- Water: clear water suits any series, while grit and silt call for the FMIG.
- Hose: match the port size to the hose you already own.
Have a tractor on site instead? The same pump design comes in a hydraulic driven version.
Engine Size and Port Size Drive the Cost
A 4 inch FMIG40-18K costs more than a 2 inch FBSGF-8. Engine brand and solids-handling parts such as the wear plate also add cost.
Send us the model number and we will quote that exact pump.
Power On Site, or Water Above the Pump?
- Your water source sits above the pump. A gas engine centrifugal pump may do the job without self-priming.
- The pump runs in one spot every day with power nearby. An electric frame mount self-priming pump saves fuel and upkeep.
- You pump fuel or chemicals. Franklin lists these pumps for water jobs, so ask us before pumping anything else.
Frequently Asked Questions
Should I buy a 2 inch or 3 inch gas powered water pump?
You should buy a 2 inch or 3 inch gas powered water pump based on how much water you need to move and the hose you will use. A 2 inch pump such as the FBSGF-8, FBSGF-10, or FNSGF-5H suits draining, filling, and short irrigation runs. A 3 inch pump such as the FMIG30-13H moves more water and handles mud, sand, and silt. For the biggest jobs, the 4 inch FMIG40-18K reaches the full 300 GPM of the series.
Why is my self-priming pump not priming?
A self-priming pump that is not priming usually has an air leak or an empty casing. First, fill the casing with water through the priming port, since the pump cannot prime dry. Next, check every suction hose clamp and gasket, because one small leak lets air in. Also check that the suction lift is not too high and the strainer is not clogged. On an engine pump, running at full throttle while priming often helps the pump pull air out faster.
What is the best gas engine self-priming pump?
The best gas engine self-priming pump is the one built for your water and your job. For muddy or sandy water and high volume, the Franklin FMIG with its wear plate and 10% solids rating is the best match. For sprinklers and long hose runs that need pressure, the FNSGF and its enclosed impeller fits best. For light, portable 2 inch transfer, the FBSGF keeps things simple. Share your lift, run, and water type, and we will match the model.
Ready to order? Send us the model number or your lift, hose run, and water type, and we will confirm the right Franklin Electric pump before it ships.