HomeMagnumMagnum MMG100D

Magnum MMG100D Generator Set

The Magnum MMG100D is a 86 kW (107 kVA) Diesel standby generator set powered by a John Deere PE4045HFG92 engine. It is available at 120/240 V, 120/208 V and 277/480 V, 3-phase and 60 Hz. It holds about 15.5 L (4.1 gal) of oil and 4.5 L (1.2 gal) of coolant, with a maximum ambient rating of 48.9 °C. Starting uses 1 battery rated 720 CCA. The set measures 3022×1022×1572 mm (119.0×40.2×61.9 in), weighs about 1714 kg (3779 lb) and produces 68 dBA at 7 m. An integrated tank holds 624.8 L (165.1 gal), roughly 24 hours of runtime. The same PE4045HFG92 engine also powers generator sets from Generac and John Deere.

86 kW
Standby
4.5 L
Displacement
15.5 L
Oil capacity
3
Document types

Typical fuel consumption for 85–90 kW Diesel generators →

Compare with other 85–90 kW Diesel generators →

Service parts for the MMG100D

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required
100-025Air filtersee priceAmazon

Fuel system

1 required
100-045Fuel filtersee priceAmazon

Oil system

1 required
100-030Oil filtersee priceAmazon

Belts

1 required
100-085Beltsee priceAmazon

Cooling system

1 required
100-060Coolant filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power86 kW
Standby kVA107
Prime power78 kW
EmissionsInterim Tier IV
ControllerPower Zone
Oil capacity15.5 L
AlternatorMarathon 363PSL1607 (1661) (Class H insulation)
Voltage options120/240 V, 120/208 V, 277/480 V
Phase3
Circuit breaker400 A
Battery cranking720 CCA
Battery quantity1
Max ambient48.9 °C
Dimensions (L×W×H)3022×1022×1572 mm
Dry weight1714 kg
Wet weight2150 kg
Sound level68.0 dBA @ 7 m
Fuel tank624.8 L
Tank runtime24 hr

Engine

John Deere PE4045HFG92
Oil capacity14.7 L
Coolant capacity4.5 L
Displacement4.5 L
Aspirationturbocharged
Rated speed1800 rpm

Maintenance & consumables

for the John Deere PE4045HFG92
ItemSpecCapacityPart #Interval
Air filterAir Filter100-025 Amazon eBay
Fuel filterFuel Filter100-045 Amazon eBay FridayParts $20.19
Oil filterOil Filter100-030 Amazon eBay
Battery250 hr
BeltBelt100-085 Amazon eBay
Coolant20.81000 hr
Coolant filterCoolant Filter100-060 Amazon eBay
Oil15.5300 hr
Spark plug1000 hr

Common questions

What is the power rating of the Magnum MMG100D?

The Magnum MMG100D is rated 86 kW standby (107.0 kVA).

What engine does the Magnum MMG100D use?

The Magnum MMG100D is powered by the John Deere PE4045HFG92 engine.

What kind of fuel does the Magnum MMG100D run on?

The Magnum MMG100D runs on Diesel.

What is the oil capacity of the Magnum MMG100D?

The John Deere PE4045HFG92 engine in the Magnum MMG100D has an oil capacity of 14.7 liters.

What alternator does the Magnum MMG100D use?

The Magnum MMG100D uses a Marathon 363PSL1607 (1661) alternator. Insulation class H.

What oil filter does the Magnum MMG100D use?

The Magnum MMG100D uses oil filter part number 100-030.

What fuel filter fits the Magnum MMG100D?

The Magnum MMG100D uses fuel filter part number 100-045.

Which air filter part number does the Magnum MMG100D take?

The Magnum MMG100D uses air filter part number 100-025.

Troubleshooting

4

Symptoms & remedies

SymptomCauseRemedy
LOW FUEL LEVEL SHUTDOWNFuel level is low, fuel tank has leaks, or fuel level sender and wiring are damaged.Check the fuel level on the Home screen. Confirm that the generator is sitting level to ensure an accurate reading. Check for leaks in the fuel tank. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage.
LOW OIL PRESSURE SHUTDOWNOil pressure is less than 20 psi (138 kPa), engine has oil leaks, or oil pressure sender is faulty.Check the level of the engine oil with the dipstick. Visually inspect the engine for oil leaks. If the oil level is good, restart the unit and verify the loss of oil pressure. Check the oil pressure sender.
LOW COOLANT LEVEL SHUTDOWNCoolant level in the radiator is low.Allow the engine to cool. Check the coolant level in the radiator.
Engine shutdownFuel tank running dry, oil pressure less than 20 psi, coolant level low, high coolant temperatureCheck fuel level and add if necessary; check for leaks; inspect engine for damage; check oil level and add if necessary; visually inspect engine for leaks; check coolant level and add if necessary; check radiator hoses, engine block, water pump for leaks; check oil to ensure no coolant mixed in; allow engine to cool before checking

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

11
Part #DescriptionQtySystem
100-025Air Filter1Air filter Amazon eBay
100-030Oil Filter1Oil filter Amazon eBay
100-045Fuel Filter1Fuel filter Amazon eBay FridayParts $20.19
100-060Coolant Filter1Coolant filter Amazon eBay
100-085Belt2Belt Amazon eBay
100-100Spark Plug1Spark plug Amazon eBay
25-1476Air Filter Minders1Air filter Amazon eBay
25-1483Primary Air Cleaners1Air filter Amazon eBay
25-1639Fuel Filters1Fuel filter Amazon eBay
25-1648Oil Filters1Oil filter Amazon eBay
AN500T0106STARTER SWITCHStarter 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

RatingLoadL/hgal/h
Prime23.56.2
Prime50%11.73.1
Prime75%17.84.7
Prime100%23.56.2
Standby18.14.78
Standby100%18.14.78

Available documents

Spec sheet — Generac Towable Diesel Generator - MMG100D Specs (Magnum)Reference — MMG75D-100D-Ops-03-15-13-32668-B (Magnum)Service manual — 32668 (Magnum)