Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 69 kW |
| Standby kVA | 86 |
| Prime power | 62 kW |
| Emissions | 4i |
| Controller | Power Zone |
| Oil capacity | 15.5 L |
| Alternator | Marathon 363CSL1608 (1647) |
| Voltage options | 208 V, 120 V, 240 V, 600 V |
| Phase | 3 |
| Rated current | 297 A |
| Power factor | 1 (1Ø), 0.8 (3Ø) |
| Circuit breaker | 300 A |
| Battery group | 24 |
| Battery cranking | 720 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Max ambient | 120 °C |
| Dimensions (L×W×H) | 3020×1020×1570 mm |
| Dry weight | 1600 kg |
| Sound level | 68.0 dBA @ 23 m |
| Fuel tank | 625.0 L |
| Tank runtime | 31 hr |
Engine
| Oil capacity | 14.7 L |
|---|---|
| Coolant capacity | 22.0 L |
| Displacement | 4.5 L |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the John Deere PE4045HFG92| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 300 hr | find | ||
| Fuel filter | — | 1000 hr | find | ||
| Oil filter | — | 300 hr | find | ||
| Belt | — | 500 hr | find | ||
| Coolant | 20.8 | — | 1000 hr | ||
| Coolant filter | — | find | |||
| Oil | 15.5 | — | 300 hr |
Common questions
What is the power rating of the Generac MMG75?
The Generac MMG75 is rated 69 kW standby (86.0 kVA).
What engine does the Generac MMG75 use?
The Generac MMG75 is powered by the John Deere PE4045HFG92 engine.
What fuel does the Generac MMG75 use?
The Generac MMG75 runs on Diesel.
What is the oil capacity of the Generac MMG75?
The John Deere PE4045HFG92 engine in the Generac MMG75 has an oil capacity of 14.7 liters.
What alternator does the Generac MMG75 use?
The Generac MMG75 uses a Marathon 363CSL1608 (1647) alternator.
Troubleshooting
3Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low Fuel Level | Shutdown, Low fuel level, Unit not level, Fuel tank leaking, Damaged fuel sender or wiring | Check fuel level in LCD window of controller. Confirm that unit is sitting level to ensure an accurate reading. Check tank for leaks. Check for continuity between sender and engine controller. |
| Low Oil Pressure | Shutdown, Low oil level, Oil leaking from engine, Oil pressure sender | Check oil level on dipstick. Add oil, if needed. Visually inspect the engine for leaks. Restart unit and verify loss of pressure. Shut down immediately if pressure does not reach 5 psi (34 kPa) within five seconds. See engine operator’s manual to identify corrective action. |
| Low Coolant Level | Shutdown, Low coolant level, Coolant hoses leaking, Engine block or water pump leaking | Allow engine to cool, then check coolant level in radiator. Add coolant, if needed. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
14| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 00087 | Twist-Lock Receptacles | 1 | Receptacle | PartsGeek |
| 00452 | 120V GFCI Receptacles | 1 | Receptacle | PartsGeek |
| 00453 | 20A Circuit Breakers | 1 | Breaker | PartsGeek |
| 100-025 | Air Filter | 1 | Air filter | PartsGeek |
| 100-030 | Oil Filter | 1 | Oil filter | PartsGeek |
| 100-045 | Fuel Filter | 1 | Oil filter | PartsGeek FridayParts $20.19 |
| 100-060 | Coolant Filter | 1 | Coolant filter | PartsGeek |
| 100-085 | Belt | 2 | Belt | PartsGeek |
| 100-100 | Spark Plug | 1 | Spark plug | PartsGeek |
| 25-1476 | Air Filter Minders | 1 | Air filter | PartsGeek |
| 25-1483 | Primary Air Cleaners | 1 | Air filter | PartsGeek |
| 25-1639 | Fuel Filters | 1 | Fuel filter | PartsGeek |
| 25-1648 | Oil Filters | 1 | Oil filter | PartsGeek |
| 12142 | DECAL, GROUND | 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 | |||
| Prime | 50% | 2.6 | 9.8 |
| Prime | 75% | 3.74 | 14.2 |
| Prime | 100% | 4.78 | 18.1 |
| Standby | |||
| Standby | 25% | 3.8 | 0.97 |
Available documents
Operator's manual — Generac Towable Diesel Generator - MMG75D-MMG100D Owners Manual (Generac)Owner's manual — 33701 (Generac)Owner's manual — MMG75D-100D-Ops-03-15-13-32668-B (Generac)Parts manual — Generac Mobile Diesel Generator Brochure (Generac)Service manual — 26635 (Generac)Service manual — 26678 (Generac)