Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 220 kW |
| Standby kVA | 275 |
| Prime power | 200 kW |
| Emissions | Tier 4 |
| Controller | Electronics DSE7310 MKII, Power Zone |
| Oil capacity | 32.5 L |
| Alternator | Marathon 431CSL6206 |
| Voltage options | 120/240 V, 208/120 V, 240/120 V, 480/277 V |
| Circuit breaker | 900 A |
| Battery group | 31 |
| Battery cranking | 950 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 42 L |
| Max ambient | 42 °C |
| Dry weight | 4245 kg |
| Sound level | 75.0 dBA @ 7 m |
| Fuel tank | 1355.0 L |
| Tank runtime | 33 hr |
Engine
| Oil capacity | 35.8 L |
|---|---|
| Displacement | 6.8 L |
| Aspiration | Turbocharged |
| Rated speed | 1800 rpm |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | find | |||
| Fuel filter | — | 1500 hr | find | ||
| Oil filter | — | 500 hr | find | ||
| Belt | — | find | |||
| Coolant | — | 6000 hr | |||
| Oil | — | 500 hr |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Common questions
What is the power rating of the Generac MDG250?
The Generac MDG250 is rated 220 kW standby (275.0 kVA).
What engine does the Generac MDG250 use?
The Generac MDG250 is powered by the John Deere 6068HFG06 engine.
What fuel does the Generac MDG250 use?
The Generac MDG250 runs on Diesel.
What is the oil capacity of the Generac MDG250?
The John Deere 6068HFG06 engine in the Generac MDG250 has an oil capacity of 35.8 liters.
What alternator does the Generac MDG250 use?
The Generac MDG250 uses a Marathon 431CSL6206 alternator.
Troubleshooting
6Fault codes
| Code | Meaning |
|---|---|
| FXXX | Indicates a fault state. The DVR stops providing excitation. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low Load indicator LED is illuminated. | Resolve by increasing electrical load. If unable to operate genset at more than 30% load, use a smaller generator. | |
| Lug Door Open indicator LED is illuminated. | Resolve by closing lug-box door. If condition remains unresolved, inspect lug-box door safety switch for proper operation. | |
| Emergency Stop indicator LED is illuminated. | Resolve by deactivating (pulling out) Emergency Stop switch. | |
| Shutdown indicator LED is illuminated. | Resolve by resolving shutdown condition. | |
| AXXX indicates an alarm state. The DVR continues to provide excitation, if excitation is enabled. | [blank] Indicates normal operation in SLEEP mode. STBY Indicates normal operation in stand-by mode, waiting for the STRT state. STRT Indicates DVR is in a soft start state. RUN.V Indicates normal operation, with excitation in AVR mode. RUN.I Indicates normal operation, with excitation in FCR mode. RUN.P Indicates normal operation, with excitation in VAR or PF mode. FLSH Indicates DVR is in field flashing mode. IDLE Indicates normal operation in idle state, waiting for the speed to take off. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
19| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 011134 | Engine exhaust | Engine exhaust | PartsGeek | |
| 011135 | Generator box | Generator box | PartsGeek | |
| 006429 | Owner’s Manual for Mobile Generator | Service part / kit | PartsGeek | |
| 10000017419 | Assembly, front panel | 1 | Service part / kit | PartsGeek |
| 10000017428 | Assembly, rear door | 1 | Service part / kit | PartsGeek |
| 10000017429 | Assembly, control door - top | 1 | Service part / kit | PartsGeek |
| 10000017439 | Assembly, rear door - left | 1 | Service part / kit | PartsGeek |
| 10000017449 | Assembly, front panel - left | 1 | Service part / kit | PartsGeek |
| 10000017453 | Assembly, fuel panel | 1 | Service part / kit | PartsGeek |
| 10000017461 | Assembly, front panel - right | 1 | Service part / kit | PartsGeek |
| 10000017467 | Assembly, control door - bottom | 1 | Service part / kit | PartsGeek |
| 10000017475 | Assembly, front door - right | 1 | Service part / kit | PartsGeek |
| 10000017490 | Assembly, front door - left | 1 | Service part / kit | PartsGeek |
| 10000017492 | Assembly, front access panel | 1 | Service part / kit | PartsGeek |
| 10000017497 | Assembly, control panel door | 1 | Service part / kit | PartsGeek |
| 10000017520 | Assembly, receptacle / e-stop panel | 1 | Service part / kit | PartsGeek |
| 53691B | Panel, roof - fwd | 1 | Service part / kit | PartsGeek |
| 54919W | Panel, top cover - front | 1 | Service part / kit | PartsGeek |
| 54920W | Panel, top plate - back | 1 | Service part / kit | PartsGeek |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 50% | 19.9 | 5.2 |
| Prime | 75% | 26.8 | 7.1 |
| Prime | 100% | 33.2 | 8.8 |
| Standby | 110% | 57.5 | 1.93 |
Available documents
Spec sheet — mdg250 diesel-generator spec-sheet english (Generac)Owner's manual — A0000393893 (Generac)Owner's manual — Generac Towable MDG150-175-250DF4 Operators Manual (Generac)Owner's manual — mdg150-mdg175-mdg250 owners-manual (Generac)Parts manual — 10000014970 (Generac)