Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 153 kW |
| Standby kVA | 191 |
| Prime power | 138 kW |
| Emissions | Interim Tier IV |
| Controller | Power Zone |
| Oil capacity | 31.5 L |
| Voltage options | 120/208 V, 277/480 V, 120/240 V |
| Phase | three |
| Circuit breaker | 700 A |
| Battery cranking | 1000 CCA |
| Max ambient | 48.89 °C |
| Dimensions (L×W×H) | 3660×1270×1960 mm |
| Dry weight | 2996 kg |
| Sound level | 68.0 dBA @ 7.01 m |
| Fuel tank | 1294.6 L |
| Tank runtime | 29 hr |
Engine
| Oil capacity | 31.5 L |
|---|---|
| Coolant capacity | 29.8 L |
| Displacement | 6.8 L |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Replace primary air cleaner when filter minder gauge shows a vacuum of 25 in. H2O, Replace air filter | — | 1000 hr | find | |
| Fuel filter | 002825 | 1000 hr | PartsGeek | ||
| Oil filter | 002824 | 3000 hr | PartsGeek | ||
| Belt | Check Automatic Belt Tensioner and Belt Wear | — | 1000 hr | find | |
| Coolant | Maintenance | — | 250 hr | ||
| Coolant filter | Check Coolant Level, Check Cooling System | — | 500 hr | find | |
| Oil | 002823 | 1000 hr | PartsGeek |
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 MMG175?
The Generac MMG175 is rated 153 kW standby (191.0 kVA).
What engine does the Generac MMG175 use?
The Generac MMG175 is powered by the John Deere PE6068HFG94 engine.
What fuel does the Generac MMG175 use?
The Generac MMG175 runs on diesel.
What is the oil capacity of the Generac MMG175?
The John Deere PE6068HFG94 engine in the Generac MMG175 has an oil capacity of 31.5 liters.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low Fuel Level Shut-down | Low fuel level, Unit not level, Fuel tank leaking, Damaged fuel sender or wiring | Check fuel level in LCD window of controller. Verify unit is sitting level to ensure an accurate reading. Check tank for leaks. Check for continuity between sender and engine controller (see DC Wiring). |
| 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 the OEM 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. Inspect hoses for leaks. Repair or replace as necessary. Visually inspect for leaks. Verify no coolant has mixed with the engine oil (oil will appear milky). See the OEM engine operator’s manual for additional information. |
| High Coolant Temperature Shutdown | Low coolant level, Blockage in radiator, Leakage in coolant hoses, engine block, or water pump | Add coolant if needed. Allow engine to cool, then check coolant level in radiator. Restart engine and check coolant temperature (on controller). Stop engine immediately if coolant temperature is 210°F (99°C) or more. Check radiator shroud and ducting for blockage and remove any foreign matter. Inspect for visible leaks. Check tension of water pump serpentine drive belt. Remove load on generator and restart engine. Check coolant temperature and shut engine down immediately if it starts to overheat. See the OEM engine operator’s manual for additional information on engine overheating. |
| Overcrank Shutdown | Fuel level low, Check fuel level in tank, Check fuel pump operation, Check air filter for blockage | See the OEM engine operator’s manual for additional information. |
| Overspeed or Under-speed Shutdown | Frequency setting incorrect | Disconnect all loads and restart unit. Read frequency (Hz) in the LCD window on controller. Frequency should read 60 Hz. If frequency is above 60 Hz, engine speed will need to be adjusted. Contact Generac Mobile Products to adjust. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
5| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 002823 | Grease | Grease | PartsGeek | |
| 002824 | Oil | Oil | PartsGeek | |
| 002825 | Grease | Grease | PartsGeek | |
| 00382 | Controller | Controller | PartsGeek | |
| P-175-002 | Oil Filter | 1 | Oil filter | 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% | 20.8 | 5.5 |
| Prime | 75% | 31.0 | 8.2 |
| Prime | 100% | 41.3 | 10.9 |
Available documents
Owner's manual — 33722 (Generac)