The Kohler 40ERES generator is listed with standby output of 39 kW, Gas fuel, 60 Hz operation, 12 available voltage configurations, Three phase, and sound level of 69 dBA @ 23 ft (7 m).
Generator • Gas • 60 Hz • Three phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
18 kW
24.9 kW
How the Kohler 40ERES compares
This compares the supplied numeric specification with Kohler generators in the same broad standby-power class where enough comparable data exists.
About 5% below the similar-output Kohler average. Around the 41st percentile for this field.
About 9% above the similar-output Kohler average. Around the 78th percentile for this field.
About 4% above the similar-output Kohler average. Around the 68th percentile for this field.
About 55% below the similar-output Kohler average. Around the 9th percentile for this field.
Generator information
| Manufacturer | Kohler |
|---|---|
| Model | 40ERES |
| Generator type | Generator |
| Fuel | Gas |
| Frequency | 60 Hz |
Electrical output
| Standby power | 39 kW |
|---|---|
| Standby kVA | 49.0 |
| Voltage options | 100 V, 190 V, 220 V, 75 V, 160 V, 180 V, 60 V, 130 V, 140 V, 50 V, 110 V, 120 V |
| Phase | Three phase |
| Power factor | 0.8 |
Engine, cooling and controls
| Engine model | General Motors Industrial Powertrain Vortec 4.3 L |
|---|---|
| Engine displacement | 262 cu in (4.3 L) |
| Aspiration / cooling | Natural Aspiration |
| Rated engine speed | 1800 rpm |
| Engine oil capacity | 1.51 gal (5.7 L) |
| Engine coolant capacity | 5.2 gal (19.7 L) |
| Oil capacity | 1.14 gal (4.3 L) |
| Coolant capacity | 1.8 gal (6.8 L) |
| Maximum ambient | 113 °F (45 °C) |
| Controller | Decision-Maker 3000 |
| Alternator | Kohler 4-Pole, Rotating-Field (4-pole, Class H insulation) |
Physical specifications
| Dry weight | 2, 165 lb (982 kg) |
|---|---|
| Dimensions (L × W × H) | 101.8 × 42.4 × 59.4 in (2585 × 1078 × 1509 mm) |
| Sound level | 69 dBA @ 23 ft (7 m) |
Battery
| Battery cranking | 630 CCA |
|---|---|
| Battery voltage | 12 V |
| Battery quantity | 1 |
Fuel consumption
| Standby | 7.7 L/h @ 25%; 10.2 L/h @ 50%; 13.8 L/h @ 75%; 16.5 L/h @ 100% |
|---|---|
| Prime | 1.24 gal/h (2.92 L/h) @ 100% |
Maintenance and service parts
| Engine oil | Interval: 150 hr; Specification: GM Specification GM6094M; Capacity: 5.7 |
|---|---|
| Oil filter | Capacity: ×1 |
| Fuel filter | Specification: As recommended by OEM |
| Air filter | Specification: Check for dirt or restriction |
| Coolant | Specification: 50/50 antifreeze and water mixture, DexCool Long Life type, min 300F boiling point, -34F freezing point; Capacity: 6.8 |
| Belt | Part number: GM16132; Specification: Belt, fan standard |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Kohler North America generator website.