Sportsman · Inverter generator · Model GEN3500DFI
GEN3500DFI
3500 Surge Watt Dual-Fuel Inverter Generator

Infographic gallery
Output, fuel flexibility, runtime, and ownership.
3,500W maximum starting output
Bars compare published running and starting capacity. Gaseous-fuel output may be lower than gasoline output.
Gasoline + propane
Model-specific fuel system and published half-load performance.
Fuel capacity
3.2 gal gasoline; external LPG cylinder
Published runtime
10 hours gasoline / 12 hours LPG at 50% load
80 lb
Product weight
21.46 × 16.14 × 18.31 in
Published dimensions
- Observed price
- $1,229.99
- Retailer
- Northern Tool
- Availability
- Current listing available
Starting
Recoil
Voltage
120V AC / 12V DC
Low-oil shutdown
Published
CO shutdown
Not listed
Official product gallery
Product views and manufacturer graphics.
Sportsman and Buffalo Corporation’s current image set shows the model, power panel, fuel configuration, and published feature graphics.



Complete specifications
The fields that matter for comparison.
Output, engine, fuel, runtime, outlets, sound, size, weight, safety, price, and warranty fields are drawn from Sportsman’s current pages and current retailer listings. Conflicting source revisions are labeled instead of silently blended.
Product overview
A dual-fuel inverter with a 212cc engine, RV outlet, low-oil shutdown, automatic voltage regulation, and parallel ports for combining compatible units.
Electrical output by fuel
- Gasoline output
- 3,000W running / 3,500W starting
- Propane output
- 2,700W running / 3,150W starting — Sportsman states output may be reduced by 10% on propane.
- Voltage
- 120V AC / 12V DC
- Outlets
- 2 × 120V AC; 1 × 120V RV; 1 × 12V DC; retailer listing also identifies USB charging
- Automatic voltage regulation
- Yes
- Parallel capability
- Yes — compatible kit sold separately
Engine, fuel & runtime
- Engine
- 212cc, 7.0 HP, 4-stroke OHV
- Starting system
- Recoil
- Fuel options
- Gasoline + propane
- Fuel capacity
- 3.2 gal gasoline; external LPG cylinder
- Published runtime
- 10 hours gasoline / 12 hours LPG at 50% load
- Sound rating
- <69 dB at no load
- Oil
- SAE 10W-30; 18.6 fl oz
Portability, protection & ownership
- Product weight
- 80 lb
- Dimensions
- 21.46 × 16.14 × 18.31 in
- Carbon-monoxide shutdown
- Not published for this model
- Low-oil shutdown
- Yes
- Compliance
- EPA approved
- Warranty
- 1-year limited; 2-year emissions
- Price and availability
- Northern Tool observed price: $1,229.99
- Sportsman model
- GEN3500DFI
Feature details
Inverter power
Sportsman describes stable sine-wave output intended for compatible sensitive electronics.
2-fuel flexibility
This model supports gasoline + propane. Published gaseous-fuel output may be lower than gasoline output.
Engine protection
Low-oil shutdown helps protect the engine, while circuit protection manages connected electrical loads.
Parallel capable
Parallel terminals support a compatible Sportsman kit for combining supported inverter generators.
Best-fit uses
- RV and recreation
- Sensitive electronics
- Fuel-flexible backup
- Camping and events
Standout features
- 3,500W starting / 3,000W running on gasoline
- Gasoline + propane
- Inverter output for compatible electronics
- Low-oil shutdown
Match it to the equipment you’ll actually run.
Use the independent wattage calculator before buying.