Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 44 kW |
| Standby kVA | 55 |
| Prime power | 38 kW |
| Emissions | Tier 4 Final |
| Controller | DSE 7310 MKII, Electronics Model 7310 MKII |
| Oil capacity | 11.4 L |
| Alternator | Marathon 285PSL1700 |
| Voltage options | 208 V, 480 V |
| Phase | three phase |
| Rated current | 66 A |
| Circuit breaker | 125 A |
| Battery cranking | 720 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 17.0 L |
| Max ambient | 49 °C |
| Dimensions (L×W×H) | 3810×1450×2110 mm |
| Dry weight | 1525 kg |
| Sound level | 66.0 dBA @ 7 m |
| Fuel tank | 379.0 L |
| Tank runtime | 36.0 hr |
Engine
| Oil capacity | 11.4 L |
|---|---|
| Coolant capacity | 17.0 L |
| Displacement | 2.2 L |
| Aspiration | Turbocharged & Aftercooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Isuzu 4LE2XAGV01| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 8972319000 | PartsGeek | |||
| Fuel filter | 8981527372 | PartsGeek $14.97 | |||
| Oil filter | X13201002 | PartsGeek $11.97 | |||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | — | 50 hr |
Common questions
What is the power rating of the Generac MMG45IF4?
The Generac MMG45IF4 is rated 44 kW standby (55.0 kVA).
What engine does the Generac MMG45IF4 use?
The Generac MMG45IF4 is powered by the Isuzu 4LE2XAGV01 engine.
What fuel does the Generac MMG45IF4 use?
The Generac MMG45IF4 runs on Diesel.
What is the oil capacity of the Generac MMG45IF4?
The Isuzu 4LE2XAGV01 engine in the Generac MMG45IF4 has an oil capacity of 11.4 liters.
What alternator does the Generac MMG45IF4 use?
The Generac MMG45IF4 uses a Marathon 285PSL1700 alternator.
What oil filter does the Generac MMG45IF4 use?
The Generac MMG45IF4 uses oil filter part number X13201002.
What fuel filter does the Generac MMG45IF4 use?
The Generac MMG45IF4 uses fuel filter part number 8981527372.
What air filter does the Generac MMG45IF4 use?
The Generac MMG45IF4 uses air filter part number 8972319000.
Troubleshooting
4Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Low Load indicator LED. • Indicates genset has operated at less than 30% capacity for more than 15 minutes. | Resolve by increasing electrical load. If unable to operate genset at more than 30% load, use a smaller generator. |
| Lug Door Open indicator LED. | Resolve by closing lug-box door. If condition remains unresolved, inspect lug-box door safety switch for proper operation. |
| Emergency Stop indicator LED. | Resolve by deactivating (pulling out) Emergency Stop switch. |
| Shutdown indicator LED. | Resolve by resolving shutdown condition. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
28| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 00086 | 4 Position Voltage Selector Switch Option | 1 | Voltage selector switch | PartsGeek |
| 00230 | Prestart Checklist | 1 | Emergency stop switch | PartsGeek |
| 00231 | Remote Start Switch Terminals | Remote start switch terminals | PartsGeek | |
| 00489 | Main Circuit Breaker | Main circuit breaker | PartsGeek | |
| 00497 | LCD window | Lcd window | PartsGeek | |
| 00498 | LED’s | Leds | PartsGeek | |
| 00499 | Ready/Manual LED | Ready manual led | PartsGeek | |
| 00565 | Central Lift Point | Central lift point | PartsGeek | |
| 00566 | 120V GFCI Receptacles | Gfcireceptacle | PartsGeek | |
| 01035 | Central Lift Point | Central lift point | PartsGeek | |
| 010417 | Oil and filter | 1 | Oil | PartsGeek |
| 010418 | Fuel filter | 1 | Fuel filter | PartsGeek |
| 010419 | Air filter | 1 | Air filter | PartsGeek |
| 010420 | Coolant and filter | 1 | Coolant | PartsGeek FridayParts $151.60 |
| 010421 | Belt | 1 | Belt | PartsGeek |
| 010422 | Battery service | 1 | Battery service | PartsGeek |
| 010423 | Spark plugs | 1 | Spark plug | PartsGeek |
| 01144 | Controller | Controller | PartsGeek | |
| 35/55 | Battery Type - 12V (1) | 1 | Battery | PartsGeek |
| 37544W | SEAL | Seal | PartsGeek | |
| 00128 | Digital Controller Information Displays, Functions, and Reset | Service part / kit | PartsGeek | |
| 00204 | Central Lift Point | Service part / kit | PartsGeek | |
| 00493 | Run Hours | Service part / kit | PartsGeek | |
| 00496 | Operation Keypad | Service part / kit | PartsGeek | |
| 00500 | 208 35C01- | SEAT, VALVE 48 48 48 | Service part / kit | PartsGeek FridayParts $82.89 | |
| 00558 | OPERATING MANUAL | Service part / kit | PartsGeek | |
| 008083 | Unit ID tag (located behind breaker door beneath breakers) | 1 | Service part / kit | PartsGeek |
| 209649 | Form: SFC626B | 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% | 6.4 | 1.7 |
| Prime | 75% | 9.4 | 2.5 |
| Prime | 100% | 12.5 | 3.3 |
| Standby | 110% | 14.4 | 3.8 |
Available documents
Spec sheet — mmg45if4 diesel gen ss (Generac)Owner's manual — 36949 (Generac)Parts manual — A0000393902 (Generac)Parts manual — Generac Mobile Diesel Generator Brochure (Generac)Service manual — 48972 (Generac)