Service parts for the MMG75
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 60 kW |
| Standby kVA | 60 |
| Prime power | 56 kW |
| Emissions | Interim Tier IV |
| Controller | Magnum Digital (MDC), Power Zone |
| Oil capacity | 15.5 L |
| Alternator | Marathon 363PSL1607 (1661) (Class H insulation) |
| Voltage options | 120/240 V, 120/208 V, 277/480 V |
| Phase | single/three |
| Circuit breaker | 300 A |
| Battery cranking | 720 CCA |
| Battery quantity | 1 |
| Max ambient | 48.9 °C |
| Dimensions (L×W×H) | 2565×1016×1727 mm |
| Dry weight | 1600 kg |
| Wet weight | 2131 kg |
| Sound level | 68.0 dBA @ 7.01 m |
| Fuel tank | 624.1 L |
| Tank runtime | 31 hr |
Engine
| Oil capacity | 14.7 L |
|---|---|
| Coolant capacity | 4.5 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 | Air Filter Minders | 25-1476 | Amazon eBay | ||
| Fuel filter | Fuel Filters | 25-1639 | Amazon eBay | ||
| Oil filter | Oil Filters | 25-1648 | Amazon eBay | ||
| Battery | — | 250 hr | |||
| Belt | — | 500 hr | |||
| Coolant | 20.8 | — | 1000 hr | ||
| Coolant filter | — | ||||
| Oil | 15.5 | — | 300 hr | ||
| Spark plug | — | 1000 hr |
Service specifications
6| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Oil pressure | 20 | psi | shutdown threshold |
| Pressure | Oil pressure | 25 | psi | warning threshold |
| Temperature | Coolant temperature | 220 | °F | warning threshold |
| Temperature | Coolant temperature | 230 | °F | shutdown threshold |
| Voltage | Battery voltage | 11 | VDC | under warning |
| Voltage | Battery voltage | 15 | VDC | over warning |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
How many kW is the Magnum MMG75?
The Magnum MMG75 is rated 60 kW standby (60.0 kVA).
Which engine powers the Magnum MMG75?
The Magnum MMG75 is powered by the John Deere PE4045HFG92 engine.
What fuel does the Magnum MMG75 use?
The Magnum MMG75 runs on diesel.
What is the oil capacity of the Magnum MMG75?
The John Deere PE4045HFG92 engine in the Magnum MMG75 has an oil capacity of 14.7 liters.
What is the cooling system capacity of the Magnum MMG75?
The Magnum MMG75 cooling system holds 4.5 liters (1.2 US gallons) for the engine, per the manufacturer specification sheet.
What is the continuous rating of the Magnum MMG75?
The Magnum MMG75 is rated 56 kW prime (56 kVA), against 60 kW standby.
What is the sound level of the Magnum MMG75?
The Magnum MMG75 is rated at 68.0 dBA at 7.01 m, per the manufacturer specification sheet.
How much does the Magnum MMG75 weigh?
The Magnum MMG75 has a dry weight of 1600 kg (3527 lb).
What size fuel tank does the Magnum MMG75 have?
The Magnum MMG75 has a 624.1 liter (165 US gallon) fuel tank, giving about 31 hours of runtime.
What voltages is the Magnum MMG75 available in?
The Magnum MMG75 is offered in 120/240 V, 120/208 V, 277/480 V, single/three-phase.
How many cold cranking amps does the Magnum MMG75 require?
The Magnum MMG75 uses 1 battery, 720 CCA, per the manufacturer specification sheet.
What alternator comes on the Magnum MMG75?
The Magnum MMG75 uses a Marathon 363PSL1607 (1661) alternator. Insulation class H.
What oil filter fits the Magnum MMG75?
The Magnum MMG75 uses oil filter part number 25-1648.
What fuel filter fits the Magnum MMG75?
The Magnum MMG75 uses fuel filter part number 25-1639.
What air filter does the Magnum MMG75 use?
The Magnum MMG75 uses air filter part number 25-1476.
Troubleshooting
34Fault codes
| Code | Meaning | Remedy |
|---|---|---|
| SPN:100 | EngOil Press | |
| SPN:102 | Boost Press | |
| SPN:105 | Intake Temp | |
| SPN:110 | EngCool Temp | |
| SPN:175 | EngOil Temp | |
| SPN:629 | Controller #1 | |
| SPN:636 | PositionSensor | |
| SPN:637 | TimingSensor | |
| SPN:651 | InjectorCyl#1 | |
| SPN:652 | InjectorCyl#2 | |
| SPN:653 | InjectorCyl#3 | |
| SPN:654 | InjectorCyl#4 | |
| SPN:655 | InjectorCyl#5 | |
| SPN:656 | InjectorCyl#6 | |
| SPN:677 | EngStartRelay | |
| SPN:1485 | ECU MainRelay | |
| WrnMaintenance | WrnMaintenance — The period for servicing is set by the WrnMaintenance setpoint. The protection comes active if the running hours of the engine reach this value. | Reset the running hours to 250: with the unit shut down, power up the controller with the CONTROL ON/OFF toggle switch; press the PAGE SELECT button; press the down button to move the > cursor down to the Engine Protect line of text; press ENTER; press ENTER again; press the up button and reset the current run time hour setting to 250; press ENTER to save the current run time hour setting; move the CONTROL ON/I toggle switch to the CONTROL OFF/O position |
| Wrn ECU Alarm | Wrn ECU Alarm — ECU alarm list is not empty. | |
| Wrn RA15 fail | Wrn RA15 fail — Warning alarm in case of lost connection to IGL=RA15 module. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low fuel level shutdown | Fuel level low; fuel tank leaks; fuel level sender or connecting wiring damaged | Check the fuel level on the LCD window and confirm the generator is sitting level; check for leaks in the fuel tank; check the fuel level sender and the connecting wiring for damage and check for continuity between the sender and the engine controller |
| Low oil pressure shutdown | Engine oil level low; oil leaks; loss of oil pressure; oil pressure sender faulty | Check the level of the engine oil with the dipstick and add oil if required; visually inspect the engine for oil leaks; restart the unit and verify the loss of oil pressure, shutting the engine down immediately if the oil pressure value does not read five (5) psi (34 kPa) within five (5) seconds; check the oil pressure sender and refer to the troubleshooting section of the engine operation and maintenance manual |
| Low coolant level shutdown | Coolant level low; coolant leaks in hoses, engine block or water pump; coolant mixed with engine oil | Allow the engine to cool; check the coolant level in the radiator and add coolant until it is 3/4 in (2 cm) below the filler neck, then secure the radiator cap; inspect coolant hoses, engine block and water pump for visible leaks; check the engine oil to verify no coolant has mixed with it and consult the engine operation and maintenance manual |
| High coolant temperature shutdown | Coolant level low in overflow jug; radiator shroud and ducting blocked; coolant leaks in hoses, engine block or water pump; serpentine drive belt for the water pump loose; engine overheating | Check the coolant level in the overflow jug; restart the engine and read the coolant temperature to verify High Coolant Temperature Shutdown, stopping the engine immediately if the coolant temperature is 230°F (110°C) or more; allow the engine to cool, add coolant to the overflow jug if low and check the radiator level, adding coolant until it is 3/4 in (2 cm) below the filler neck and securing the radiator cap; check the radiator shroud and ducting for blockage and remove any foreign matter; inspect coolant hoses, engine block and water pump for visible leaks; check the tension of the serpentine drive belt for the water pump; if no other problems are found, remove the load on the generator and restart the engine, checking the coolant temperature and shutting the engine down immediately if it starts to overheat, and consult the engine operation and maintenance manual |
| Overcrank shutdown | Fuel level low; fuel pump not operating properly; air filter blocked; engine will not start | Check the fuel level in the tank; check for proper operation of the fuel pump; check air filter for blockage; if the engine will not start, consult the engine operation and maintenance manual for additional information on troubleshooting starting problems |
| Overspeed or underspeed shutdown | Frequency above or below 60.0 Hz with no loads on the generator (engine speed requires adjustment) | Disconnect all loads and restart the generator, read the frequency (Hz) on the LCD display (should read 60.0 Hz with no loads); if the frequency is above or below 60.0 Hz, adjust the engine speed — see the engine manual for throttle adjustments on mechanical governed units and the electronic governor manual for electronically controlled units |
| Low fuel level shutdown | Fuel level low; leaks in the fuel tank; fuel level sender and connecting wiring damaged | Check the fuel level on the Home screen and confirm the generator is sitting level; check for leaks in the fuel tank; check the fuel level sender and the connecting wiring for damage and check for continuity between the sender and the engine controller |
| Low coolant level shutdown | Coolant level low; leaks in coolant hoses, engine block or water pump; coolant mixed with engine oil | Allow the engine to cool; check the coolant level in the radiator and add coolant until it is 3/4 in. (1.9 cm) below the filler neck; inspect coolant hoses, engine block and water pump for visible leaks; check engine oil to verify no coolant has mixed with it and consult the engine operator's manual |
| High coolant temperature shutdown | Coolant level low in overflow jug or radiator; radiator shroud and ducting blocked; leaks in coolant hoses, engine block or water pump; serpentine drive belt tension incorrect; generator overloaded | Check the coolant level in the overflow jug; restart the engine and read the coolant temperature, stopping the engine immediately if the coolant temperature is 230°F (110°C) or more; allow the engine to cool, add coolant to the overflow jug if low and check the radiator level, adding coolant until it is 3/4 in. (1.9 cm) below the filler neck; check the radiator shroud and ducting for blockage and remove any foreign matter; inspect coolant hoses, engine block and water pump for visible leaks; check the tension of the serpentine drive belt for the water pump; remove the load on the generator and restart the engine, checking the coolant temperature and shutting the engine down immediately if it starts to overheat |
| Overspeed or underspeed shutdown | Engine speed above or below 60.0 Hz | Disconnect all loads and restart the generator and read the frequency (Hz) on the LCD display; if the frequency is above or below 60.0 Hz, adjust the engine speed per the engine operator's manual for throttle adjustments on mechanically governed units and the electronic governor manual for electronically controlled units |
| Low fuel level shutdown | Fuel level low; fuel tank leak; fuel level sender or connecting wiring damaged | Check the fuel level on the LCD window and confirm the generator is sitting level; check for leaks in the fuel tank; check the fuel level sender and the connecting wiring for damage and check for continuity between the sender and the engine controller |
| Low oil pressure shutdown | Engine oil level low; oil leaks; loss of oil pressure; oil sender fault | Check the level of the engine oil with the dipstick and add oil if required; visually inspect the engine for oil leaks; restart the unit and verify the loss of oil pressure, shutting the engine down immediately if the oil pressure value does not read 5 psi (34 kPa) within five seconds; check the oil sender and refer to the troubleshooting section of the engine operator's manual |
| Low coolant level shutdown | Coolant level low; coolant leaks; coolant mixed with engine oil | Allow the engine to cool; check the coolant level in the radiator and add coolant until it is 3/4 in. (1.9 cm) below the filler neck; inspect coolant hoses, engine block and water pump for visible leaks; check the engine oil to verify no coolant has mixed with it and consult the engine operator's manual |
| High coolant temperature shutdown | Coolant level low; radiator shroud and ducting blockage; coolant leaks; loose serpentine drive belt for the water pump; engine overheating | Check the coolant level in the overflow jug; restart the engine and read the coolant temperature to verify a high coolant temperature shutdown, stopping the engine immediately if the coolant temperature is 230°F (110°C) or more; allow the engine to cool, add coolant to the overflow jug if it is low and check the level of coolant in the radiator, adding coolant until it is 3/4 in. (1.9 cm) below the filler neck; check the radiator shroud and ducting for blockage and remove any foreign matter; inspect coolant hoses, engine block and water pump for visible leaks; check the tension of the serpentine drive belt for the water pump; if no other problems are found, remove the load on the generator and restart the engine, checking the coolant temperature and shutting the engine down immediately if it starts to overheat, and consult the engine operator's manual |
| Overspeed or underspeed shutdown | Engine speed not adjusted (frequency above or below 60.0 Hz) | Disconnect all loads and restart the generator and read the frequency (Hz) on the LCD display (with no loads the frequency should read 60.0 Hz); if the frequency is above or below 60.0 Hz, adjust the engine speed per the engine operator's manual for throttle adjustments on mechanical governed units and the electronic governor manual for electronically controlled units |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
11| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 100-025 | Air Filter | 1 | Air filter | Amazon eBay |
| 100-030 | Oil Filter | 1 | Oil filter | Amazon eBay |
| 100-045 | Fuel Filter | 1 | Fuel filter | Amazon eBay FridayParts $20.19 |
| 100-060 | Coolant Filter | 1 | Coolant filter | Amazon eBay |
| 100-085 | Belt | 2 | Belt | Amazon eBay |
| 100-100 | Spark Plug | 1 | Spark plug | Amazon eBay |
| 25-1476 | Air Filter Minders | 1 | Air filter | Amazon eBay |
| 25-1483 | Primary Air Cleaners | 1 | Air filter | Amazon eBay |
| 25-1639 | Fuel Filters | 1 | Fuel filter | Amazon eBay |
| 25-1648 | Oil Filters | 1 | Oil filter | Amazon eBay |
| AN500T0106 | STARTER SWITCH | Starter | Amazon eBay |
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 | 23.5 | 6.2 | |
| Prime | 50% | 9.8 | 2.6 |
| Prime | 75% | 14.2 | 3.74 |
| Prime | 100% | 18.1 | 4.78 |
| Standby | 18.1 | 4.78 | |
| Standby | 100% | 18.1 | 4.78 |
Available documents
Spec sheet (Magnum)Spec sheet — MMG75-SPECS (Magnum)Reference — MMG75D-100D-Ops-03-15-13-32668-B (Magnum)Service manual — 32668 (Magnum)
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.