HomeMagnumMagnum MMG100

Magnum MMG100 Generator Set

The Magnum MMG100 is a 86 kW (107 kVA) diesel standby generator set powered by a John Deere PE4045HF285 engine. It is available at 120/240 V, 120/208 V and 277/480 V, 60 Hz. It holds about 15.5 L (4.1 gal) of oil and 29.8 L (7.9 gal) of coolant, with a maximum ambient rating of 48.89 °C. Starting uses battery rated 720 CCA. The set measures 4010×1520×2130 mm (157.9×59.8×83.9 in), weighs about 1860 kg (4101 lb) and produces 68 dBA at 7.01 m. An integrated tank holds 556.4 L (147.0 gal), roughly 22 hours of runtime. The same PE4045HF285 engine also powers generator sets from Generac.

86 kW
Standby
4.5 L
Displacement
15.5 L
Oil capacity
1
Document types

Typical fuel consumption for 85–90 kW Diesel generators →

Compare with other 85–90 kW Diesel generators →

Service parts for the MMG100

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

Air intake

1 required
25-1476Air filtersee priceAmazon

Fuel system

1 required
25-1639Fuel filtersee priceAmazon

Oil system

1 required
25-1648Oil 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
EmissionsTier III
ControllerMagnum Digital (MDC)
Oil capacity15.5 L
Voltage options120/240 V, 120/208 V, 277/480 V
Circuit breaker400 A
Battery cranking720 CCA
Max ambient48.89 °C
Dimensions (L×W×H)4010×1520×2130 mm
Dry weight1860 kg
Sound level68.0 dBA @ 7.01 m
Fuel tank556.4 L
Tank runtime22 hr

Engine

John Deere PE4045HF285
Oil capacity13.7 L
Coolant capacity29.8 L
Displacement4.5 L
Aspirationturbocharged
Rated speed1800 rpm

Maintenance & consumables

for the John Deere PE4045HF285
ItemSpecCapacityPart #Interval
Air filterAir Filter Minders25-1476 Amazon eBay
Fuel filterFuel Filters25-1639 Amazon eBay
Oil filterOil Filters25-1648 Amazon eBay
Battery
Belt
Coolant
Coolant filter
Oil
Spark plug

Common questions

What size generator is the Magnum MMG100?

The Magnum MMG100 is rated 86 kW standby (107.0 kVA).

Which engine powers the Magnum MMG100?

The Magnum MMG100 is powered by the John Deere PE4045HF285 engine.

Is the Magnum MMG100 diesel or gas?

The Magnum MMG100 runs on diesel.

What's the oil capacity on a Magnum MMG100?

The John Deere PE4045HF285 engine in the Magnum MMG100 has an oil capacity of 13.7 liters.

What oil filter does the Magnum MMG100 use?

The Magnum MMG100 uses oil filter part number 25-1648.

What fuel filter does the Magnum MMG100 use?

The Magnum MMG100 uses fuel filter part number 25-1639.

What air filter does the Magnum MMG100 use?

The Magnum MMG100 uses air filter part number 25-1476.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
LOW FUEL LEVEL SHUTDOWNFuel level in the tank is low or fuel lines are running dry.Check and refill the fuel level. Inspect for leaks and check the fuel level sender.
LOW OIL PRESSURE SHUTDOWNOil pressure is less than 20 psi (138 kPa).Check oil level, inspect for leaks, and check the oil pressure sender.
LOW COOLANT LEVEL SHUTDOWNCoolant level in the radiator is low.Check coolant level, inspect hoses, engine block, water pump for leaks, and check oil for coolant contamination.
HIGH COOLANT TEMPERATURE SHUTDOWNCoolant temperature is 230°F (110°C) or more.Check coolant level, remove any blockages, inspect hoses and components for leaks, check water pump belt tension, and load the unit to prevent overheating.
OVERCRANK SHUTDOWNEngine will not start.Check fuel level, fuel pump operation, air filter for blockage. Refer to manual for additional troubleshooting.
OVERSPEED OR UNDERSPEED SHUTDOWNEngine speed is above or below 60.0 Hz.Disconnect loads and adjust engine speed as needed based on manual instructions.

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

Parts

23
Part #DescriptionQtySystem
100-001Air Filter1Air filter Amazon 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
PP88S12Pump PP88S121Pump Amazon eBay
01615Enclosure PanelsService part / kit Amazon eBay
01616Unit Decals - Left Side - MMG120Service part / kit Amazon eBay
12142Decal, ground1Service part / kit Amazon $162.97 eBay
18396Decal, Panel Light Switch, Single1Service part / kit Amazon eBay KuduParts $53.00
21259Decal, Battery Charger (Optional)1Service part / kit Amazon eBay
22870Decal, Caution for 480V CSA1Service part / kit Amazon eBay
23597Decal, Panel Light Switch (Optional)1Service part / kit Amazon eBay
23827Decal, Controller Switches1Service part / kit Amazon eBay
23846Decal, Controller Instructions1Service part / kit Amazon eBay
24904Decal, 4 Pos. Outlet Usage in Delta (Optional for MMG100CAN Only)1Service part / kit Amazon eBay
28964Decal, Engine Block Heater (Optional)1Service part / kit Amazon eBay
30175Decal, UN31A Tank Caution (Optional)1Service part / kit Amazon eBay FridayParts $85.00
30176Decal, Flex - Tier III1Service part / kit Amazon eBay FridayParts $109.99
31024Decal, Fan Clutch (Optional)1Service part / kit Amazon eBay
33787Decal, Generator - Voltage Configuration (MMG100CAN6 Only)1Service part / kit Amazon eBay
34274Decal, Generator - 600V Circuit Breakers (MMG100CAN6 Only)1Service part / kit Amazon eBay
34275Decal, Caution - 120 & 240 Outlets: 600V (MMG100CAN6 Only)1Service part / kit 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
Prime6.324.0
Prime50%11.73.1
Prime75%17.84.7
Prime100%23.56.2
Standby6.324.0

Available documents

Spec sheet — MMG100 Mobile (Magnum)