Specifications
| Fuel | Natural Gas or L.P. Vapor |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 40 kW |
| Oil capacity | 4.55 L |
| Voltage options | 120/240 V |
| Phase | 1 |
| Power factor | 1.0 |
| Max ambient | 120 °C |
Engine
| Oil capacity | 4.55 L |
|---|---|
| Coolant capacity | 5.6 L |
| Displacement | 3.9 L |
| Aspiration | Naturally Aspirated |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Generac 3.9 GN| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | Full flow, cartridge | — | |||
| Oil | Gear | — |
Common questions
How many kW is the Generac 3.9GN?
The Generac 3.9GN is rated 40 kW standby.
What engine is in the Generac 3.9GN?
The Generac 3.9GN is powered by the Generac 3.9 GN engine.
What fuel does the Generac 3.9GN use?
The Generac 3.9GN runs on Natural Gas or L.P. Vapor.
How much oil does the Generac 3.9GN take?
The Generac 3.9 GN engine in the Generac 3.9GN has an oil capacity of 4.55 liters.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 25% | 132.0 | 57.0 |
| Standby | 50% | 264.0 | 113.0 |
| Standby | 75% | 396.0 | 170.0 |
| Standby | 100% | 504.0 | 216.0 |
Available documents
Spec sheet — 01693200EW (Generac)