HomeGeneracGenerac MMG130

Generac MMG130 Generator Set

The Generac MMG130 is a 96 kW diesel standby generator set powered by a John Deere PE4045HFG93 engine. It is available at 480/277 V, 208/120 V and 240/120 V, 3-phase and 60 Hz. It holds about 31.2 L (8.2 gal) of oil and 29.8 L (7.9 gal) of coolant, with a maximum ambient rating of 49 °C. Starting uses battery rated 720 CCA. The set weighs about 2469 kg (5443 lb). An integrated tank holds 1295 L (342.1 gal), roughly 44 hours of runtime. The same PE4045HFG93 engine also powers generator sets from John Deere and Magnum.

96 kW
Standby
4.5 L
Displacement
31.2 L
Oil capacity
3
Document types

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Typical fuel consumption for 95–100 kW Diesel generators →

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Specifications

Fueldiesel
Frequency60.0 Hz
Standby power96 kW
Prime power90 kW
EmissionsInterim Tier IV
ControllerPower Zone
Oil capacity31.2 L
Voltage options480/277 V, 208/120 V, 240/120 V
Phase3
Battery cranking720 CCA
Max ambient49 °C
Dry weight2469 kg
Fuel tank1295.0 L
Tank runtime44 hr

Engine

John Deere PE4045HFG93
Oil capacity31.2 L
Coolant capacity29.8 L
Displacement4.5 L
Aspirationturbocharged
Rated speed1800 rpm

Maintenance & consumables

for the John Deere PE4045HFG93
ItemSpecCapacityPart #Interval
Air filterpaper element250 hr
Fuel filter500 hr
Oil filter500 hr
Battery500 hr
Belt1000 hr
Coolant250 hr
Oil31.2500 hr
Spark plug250 hr

Service intervals

17
ItemActionHoursMonthsNotes
Engine mountsCheck250 hr
Oil vapor recirculation system/non-return valveCheck250 hr
Air intake hoses, connections, and systemCheck500 hr
Automatic belt tensioner and belt wearCheck500 hr12 moBelt removed and checked for wear at 500 hour/12 month service interval
BatteryCheck500 hrService battery
Cooling systemCheck500 hr
Engine electrical ground connectionCheck500 hr
Engine oil and oil filterChange500 hrFirst service — Also 100 hrs break-in period; interval reduced to every 250 hours if not using John Deere Plus 50 II engine oil
Fuel filter elementsReplace500 hr12 mo
Leveling jack(s)Lubricate500 hr
Oil vapor recirculation filterReplace500 hr
Generator drive plate torqueCheck1000 hrSee Checking Generator Drive Plate Torque
Air cleaner elementsReplace3000 hr36 mo
Alternator and fan beltsReplace3000 hr36 mo
Diesel Particulate Filter (DPF) ash removalReplace3000 hrExpected service interval at least 3,000 or 4,500 hours; by OEM authorized dealer only
FusesCheck3000 hr36 mo
ThermostatsTest3000 hr36 mo

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

15
TypeItemValueUnitCondition
PressureEngine oil pressure (minimum on start)5psi (34 kPa)within five seconds
PressureEngine oil pressure (normal operating)35-80psi (241-552 kPa)
SpeedEngine governed operating speed1800rpm
SpeedOutput frequency (no load)60Hzno loads connected
TemperatureCoolant temperature (normal operating)180-200°F (82-93°C)average ambient 70°F (21°C)
TemperatureCoolant temperature gauge range150-250°F (66-121°C)
TemperatureHigh coolant temperature shutdown210°F (99°C)
TorqueGenerator drive plate bolt36 (49)ft-lbs (Nm)
TorqueGenerator drive plate bolt46 (63)ft-lbs (Nm)
TorqueGenerator drive plate bolt47 (64)ft-lbs (Nm)
TorqueWheel lug nuts - first pass20-25ft-lbs (Nm)
TorqueWheel lug nuts - second pass50-60ft-lbs (Nm)
TorqueWheel lug nuts - third pass90-120ft-lbs (Nm)
VoltageBattery voltage (normal, engine running)12-14V12 volt systems
VoltageBattery voltage (normal, engine running)24-26V24 volt systems

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
CoolantPropylene glycol base antifreezeDo not use chromate base rust inhibitor with propylene glycol base antifreeze, boosters or additivesabove -24°CMixtures (antifreeze/water by volume -> freezing point): 40/60 = -12°F (-24°C); 50/50 = -34°F (-36°C); 60/40 = -54°F (-48°C); 70/30 = -90°F (-67°C) (maximum freeze protection is at 70%)
Engine oilJohn Deere Plus 50 IIHigh quality detergent oil, appropriate classification and viscosity for engine type/ambient temperatureFactory filled with engine oil of a grade recommended by the engine supplier; consult IASD or engine service manual

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

12
Fine Voltage Adjustment adjustment
  1. With the unit running, press the Generator button.
  2. Press Enter; the voltages displayed begin flashing.
  3. Use ▲ and ▼ to adjust the voltage.
  4. Press Enter to confirm the new voltage; voltages stop flashing.
To Achieve 240V in 208V Configuration adjustment

⚠ Equipment Damage. Verify voltage application before making changes to factory settings.

  1. Shut down unit, move Control Power switch to ON (I).
  2. Press a directional arrow to enter the maintenance screens.
  3. Press ► until the Status tab shows the Power Zone™ application version (must be V4 or higher).
  4. Press any directional arrow to enter maintenance screens.
  5. Press Enter and O simultaneously to display the Configuration menu.
  6. Navigate to Config Selection, then Config to Edit, then Selected Configuration.
  7. Select Alternative Configuration 1.
  8. Enter Password Entry and enter password 4444 if applicable.
  9. Highlight Generator, then Generator voltage, then Over Voltage Alarms.
  10. Set Alarm Trip to 153V.
  11. Set Pre-alarm Trip to 151V.
  12. Press and hold Enter for five seconds until the Saving screen appears.
Checking Generator Drive Plate Torque maintenance
  1. Disconnect battery.
  2. Remove generator fan guard.
  3. Torque each of the drive plate bolts to the specification shown in the table.
  4. Install generator fan guard.
  5. Connect battery.
Force a Manual Exhaust Filter Cleaning maintenance

⚠ Check for adequate fuel level before beginning exhaust filter cleaning.

  1. Open the control door and locate the switch labeled EXHAUST FILTER CLEANING.
  2. Move and hold the switch in ON/FORCED (I) for five seconds.
  3. On the DPF Status screen verify the Regeneration indicator shows DPF Lamp - Solid.
Resetting the Maintenance Alarms maintenance
  1. With unit shut down, move Control Power switch to CONTROL ON (I).
  2. Press any directional arrow to enter the maintenance screens.
  3. Press Enter and O simultaneously to display the Configuration menu.
  4. Press ▼ to move to the Maintenance group.
  5. Press ► to access sections; highlight the Maintenance section.
  6. Press ► to access parameters and highlight the alarm to reset.
  7. Press Enter to select editable parameters; highlight Reset.
  8. Press Enter to reset the selected maintenance alarm.
  9. To save changes, press and hold Enter for five seconds.
Trailer Wheel Bearing Lubrication maintenance

⚠ Use only a high quality grease made specifically for lubrication of wheel bearings.

Tools: Grease gun

  1. Remove the small rubber plug on the grease cap.
  2. Attach a standard grease gun fitting to the grease fitting.
  3. Pump grease into the fitting until new grease is visible around the nozzle.
  4. Wipe any excess grease from the hub with a clean cloth.
  5. Replace the rubber plug when finished.
AUTO (Remote) Starting the Unit operation

⚠ Verify contacts on any remote switch are open before entering AUTO mode.

Tools: Jumper wire (minimum 16 gauge)

  1. Perform a manual start at least once to verify correct operation.
  2. To check remote start circuit, remove wires from remote start terminal block.
  3. Press AUTO/MANUAL Mode button so LCD shows Auto Mode.
  4. Attach a minimum 16 gauge jumper wire across the two remote start terminals.
  5. Engine should crank, start and run; remove jumper to stop.
  6. Reconnect remote start switch (transfer switch) wires.
  7. Verify unit is in AUTO mode.
  8. Close the main circuit breaker (ON/I) and lock all access doors.
Disabling Automatic (AUTO) Exhaust Filter Cleaning operation

⚠ Risk of Burn. Stay clear of the exhaust system during operation and exhaust filter cleaning.

  1. Open the control door and locate the switch labeled EXHAUST FILTER CLEANING.
  2. Move the switch to DISABLED (O).
  3. On the DPF Status screen verify the Disabled Regeneration indicator shows DPF Inhib - Solid.
Enable Exhaust Filter Cleaning operation
  1. Open the control door and locate the switch labeled EXHAUST FILTER CLEANING.
  2. Move the switch to ON/AUTO (I/O).
  3. On the DPF Status screen verify the Regeneration indicator shows DPF Lamp - Solid.
Lifting the Unit operation

⚠ Always remain aware of people and objects around when moving or lifting the unit.

  1. Attach a sling or hook directly to the central lift point only if devices are in good condition.
  2. Verify the equipment used to raise the unit has sufficient capacity.
  3. Keep doors and hood closed and locked while moving or lifting.
Manually Starting the Unit operation

⚠ Asphyxiation. Running engines produce carbon monoxide.

  1. Move the Control Power switch to ON (I).
  2. Press the AUTO/MANUAL Mode button to enter MANUAL mode.
  3. Press the green Engine Start (I) button to initiate startup.
  4. If engine does not start, it pauses 15 seconds; up to three crank cycles.
  5. If Fail to Start alarm, wait two minutes then press Enter to clear.
  6. Verify AC output voltage is correct (see Fine Voltage Adjustment).
  7. Check frequency (Hz) reads approximately 60 Hz with no load.
  8. Switch main circuit breaker ON (I) and add loads via receptacle breakers.
Set the Controller Clock operation
  1. Navigate to the Maintenance group and press ► to access it.
  2. Press ► to select the Time section.
  3. Set the time and date to the correct local time.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

VoltagePhaseConnectionLeadsNotes
120V3Low DeltaT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option
208/120V3Low WyeT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option
240/120V1Low Zig ZagT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option
240/120V3High DeltaT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option
480/240V1High Zig ZagT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option
480/277V3High WyeT1-T12 (dedicated 12 lead generator)Dedicated 12 lead generators option

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 Generac MMG130?

The Generac MMG130 is rated 96 kW standby.

What engine does the Generac MMG130 use?

The Generac MMG130 is powered by the John Deere PE4045HFG93 engine.

What fuel does the Generac MMG130 use?

The Generac MMG130 runs on diesel.

What's the oil capacity on a Generac MMG130?

The John Deere PE4045HFG93 engine in the Generac MMG130 has an oil capacity of 31.2 liters.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
Low Fuel Level Shut-downLow fuel level, Unit not level, Fuel tank leaking, Damaged fuel sender or wiringCheck 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 ShutdownLow oil level, Oil leaking from engine, Oil pressure senderCheck 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 ShutdownLow coolant level, Coolant hoses leaking, Engine block or water pump leakingAllow 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 ShutdownLow coolant level, Blockage in radiator, Leakage in coolant hoses, engine block, or water pumpAdd 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 ShutdownFuel level low, Check fuel level in tank, Check fuel pump operation, Check air filter for blockageSee the OEM engine operator’s manual for additional information.
Overspeed or Under-speed ShutdownFrequency setting incorrectDisconnect 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

3
Part #DescriptionQtySystem
P-130D-001Air Filter1Air filter Amazon eBay
P-175-002Oil Filter1Oil filter Amazon eBay
P-205-003Fuel Filter1Fuel filter 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
Prime50%14.03.7
Prime75%20.85.5
Prime100%28.07.4

Available documents

Spec sheet — Generac Towable Mobile Diesel Generator Specifications - MMG130D (Generac)Owner's manual — 33722 (Generac)Parts manual — Generac Mobile Diesel Generator Brochure (Generac)