HomeGeneracGenerac MMG75

Generac MMG75 Generator Set

The Generac MMG75 is a 69 kW (86 kVA) Diesel standby generator set powered by a John Deere PE4045HFG92 engine. It is available at 208 V, 220 V, 440 V and 480 V, 3-phase, 60 Hz and rated 103 A. It holds about 15.5 L (4.1 gal) of oil and 22 L (5.8 gal) of coolant, with a maximum ambient rating of 120 °C. Starting uses 1 group-24 battery rated 720 CCA at 12 V. The set measures 4320×1750×2030 mm (170.1×68.9×79.9 in), weighs about 1923 kg (4239 lb) and produces 68 dBA at 7 m. An integrated tank holds 625 L (165.1 gal), roughly 31 hours of runtime. The same PE4045HFG92 engine also powers generator sets from John Deere and Magnum.

69 kW
Standby
4.5 L
Displacement
15.5 L
Oil capacity
4
Document types

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power69 kW
Standby kVA86
Prime power62 kW
EmissionsInterim Tier 4
ControllerPower Zone
Oil capacity15.5 L
Voltage options120 V, 240 V, 208 V, 277 V, 480 V
Phase3
Rated current103 A
Power factor0.8
Circuit breaker300 A
Battery group24
Battery cranking720 CCA
Battery voltage12 V
Battery quantity1
Max ambient120 °C
Dimensions (L×W×H)4320×1750×2030 mm
Dry weight1600 kg
Sound level68.0 dBA @ 7 m
Fuel tank625.0 L
Tank runtime31 hr

Engine

John Deere PE4045HFG92
Oil capacity14.7 L
Coolant capacity22.0 L
Displacement4.5 L
AspirationTurbo
Rated speed1800 rpm

Maintenance & consumables

for the John Deere PE4045HFG92
ItemSpecCapacityPart #Interval
Air filterAir Filter Replacement300 hr find
BeltInspect pulleys and bearings. Rotate and feel for hard turning or unusual sounds. If pulleys or bearings need replacement, contact John Deere.500 hr find
Coolant20.8 L1000 hr
Coolant filter find
Fuel filter625.0 L1000 hr find
OilOil Change15.5 L300 hr
Oil filterOil Filter Replacement14.7300 hr find

Parts

14
Part #DescriptionQtySystem
00087Twist-Lock Receptacles1Receptacle buy
00452120V GFCI Receptacles1Receptacle buy
0045320A Circuit Breakers1Breaker buy
100-025Air Filter1Air filter buy
100-030Oil Filter1Oil filter buy
100-045Fuel Filter1Fuel filter buy
100-060Coolant Filter1Coolant filter buy
100-085Belt2Belt buy
100-100Spark Plug1Spark plug buy
25-1476Air Filter Minders1Air filter buy
25-1483Primary Air Cleaners1Air filter buy
25-1639Fuel Filters1Fuel filter buy
25-1648Oil Filters1Oil filter buy
12142Roof assembly1Service part / kit buy

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
Prime2.650.7
Prime50%2.69.8
Prime75%3.7414.2
Prime100%4.7818.1
Standby
Standby25%3.80.97

Available documents

Spec sheetOperator's manualOwner's manualService manual

Other sets with this engine