Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 35 kW |
| Standby kVA | 44 |
| Prime power | 33 kW |
| Emissions | Interim Tier IV |
| Controller | Mobile Digital |
| Oil capacity | 13.9 L |
| Alternator | Generac G350 (6-pole, Class H insulation) |
| Voltage options | 120/240 V, 120/208 V, 277/480 V |
| Phase | 3-phase |
| Rated current | 95.6 A |
| Power factor | 0.8 |
| Circuit breaker | 200 A |
| Battery cranking | 720 CCA |
| Max ambient | 48.89 °C |
| Dimensions (L×W×H) | 2410×890×1320 mm |
| Dry weight | 1056 kg |
| Sound level | 68.0 dBA @ 7.01 m |
| Fuel tank | 401.2 L |
| Tank runtime | 31 hr |
Engine
| Oil capacity | 13.9 L |
|---|---|
| Coolant capacity | 17.5 L |
| Displacement | 3.6 L |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Kubota V3600-T-E3BG| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 250 hr | find | ||
| Fuel filter | — | 250 hr | find | ||
| Oil filter | — | 500 hr | find | ||
| Belt | — | 500 hr | find | ||
| Coolant | 4.7 L | — | 2000 hr | ||
| Oil | 4.7 L | — | 50 hr |
Common questions
What is the power rating of the Generac MMG45FHK?
The Generac MMG45FHK is rated 35 kW standby (44.0 kVA).
What engine does the Generac MMG45FHK use?
The Generac MMG45FHK is powered by the Kubota V3600-T-E3BG engine.
What fuel does the Generac MMG45FHK use?
The Generac MMG45FHK runs on diesel.
What is the oil capacity of the Generac MMG45FHK?
The Kubota V3600-T-E3BG engine in the Generac MMG45FHK has an oil capacity of 13.9 liters.
What alternator does the Generac MMG45FHK use?
The Generac MMG45FHK uses a Generac G350 alternator. It has 6 poles. Insulation class H.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low Fuel Level Shut Down | Check fuel level on LCD display. Check for fuel tank leaks. The engine controller will shut the engine down when there is five percent of fuel remaining in the tank. | Check the fuel level sender and connecting wiring for damage. To check for continuity between sender and engine controller, remove the appropriate bolts from control panel to access the inside of the control box. Consult the appropriate DC wiring diagram for the proper path between the engine controller and the fuel level sender. |
| Low Oil Pressure Shut Down | Check the engine oil level with the dipstick. Add oil if required. Inspect engine for oil leaks. | If oil level is good, restart the unit and verify loss of oil pressure. Shut the engine down immediately if the oil pressure value does not read 5 psi (34 kPa) within five seconds. Check oil pressure sender. To identify corrective action, refer to the troubleshooting section of the engine operator’s manual provided with the unit. |
| Low Coolant Level Shut Down | Allow engine to cool. Confirm unit is level to ensure an accurate reading. | Check coolant level in radiator. Open the front hood to access the radiator cap. Add coolant until it is 3/4 in. (1.9 cm) below filler neck. Secure the radiator cap back into its original position. Inspect coolant hoses, engine block and water pump for visible leaks. Check engine oil to verify no coolant has mixed with it. Oil will appear milky if coolant is present. |
| High Coolant Temperature Shut Down | Check coolant level in overflow jug. | Restart engine and read coolant temperature to verify high coolant temperature shutdown. Stop engine immediately if coolant temperature is 230°F (110°C) or more. Allow engine to cool. Add coolant to overflow jug if it is low and then check coolant level in radiator. Open front hood to access the radiator cap. Add coolant until it is 3/4 in. (1.9 cm) below filler neck. Secure radiator cap back into its original position. Check 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 water pump belt. If no other problems are found, remove the load on the generator and restart the engine. Check the coolant temperature and shut the engine down immediately if it starts to overheat. |
| Overcrank Shut Down | Check fuel level in tank. Check for proper operation of the fuel pump. Check air filter for blockage. | If engine will not start, consult the engine operation and maintenance manual. |
| Overspeed or Underspeed Shut Down | Disconnect all loads and restart generator. Read the frequency (Hz) on the display. With no loads on the generator, the frequency should read 60.0 Hz. | If frequency is above or below 60.0 Hz, the engine speed needs to be adjusted. See the engine manual for throttle adjustments on mechanical governed units and see 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
30| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 002823a | Grease | 1 | Grease | PartsGeek |
| 002824a | Oil | 1 | Oil | PartsGeek |
| 002825a | Oil | 1 | Oil | PartsGeek |
| 18556 | Regulator, voltage - SE350 | 1 | Sensor | PartsGeek FridayParts $158.99 |
| 20450 | Hose, air intake | 1 | Hose | PartsGeek |
| 21259 | Decal, Battery Charger (Optional) | 1 | Battery charger decal | PartsGeek |
| 22874 | Element, air filter | 1 | Air filter | PartsGeek |
| 22967 | Filter, air | 1 | Oil filter | PartsGeek |
| 27408 | Belt, fan | 1 | Belt | PartsGeek |
| 27470 | Alternator, engine | 1 | Alternator | PartsGeek |
| 27471 | Starter, engine | 1 | Starter | PartsGeek |
| 34550 | Decal, 600V Circuit Breakers (MMG45FHKCAN6 only) | 1 | Circuit breakers 600v decal | PartsGeek |
| 50018 | Hose, fuel - .312 ID, 50 psi, SAE 30R7 | 3 | Hose | PartsGeek |
| 50201 | Hose, coolant - .625 I.D. | 2.3 | Hose | PartsGeek |
| 65592 | Sensor, low coolant | 1 | Sensor | PartsGeek |
| 000300 | WARNING: Crushing Hazard. Stay clear of hood and lift structure when opening and closing generator hoods. Failure to do so could result in death or serious injury. | Service part / kit | PartsGeek | |
| 002787 | WARNING: Crushing Hazard. Stay clear of hood and lift structure when opening and closing generator hoods. Failure to do so could result in death or serious injury. | Service part / kit | PartsGeek | |
| 002788 | WARNING: Crushing Hazard. Stay clear of hood and lift structure when opening and closing generator hoods. Failure to do so could result in death or serious injury. | Service part / kit | PartsGeek | |
| 19219 | Cap, radiator - 14.7 psi | 1 | Service part / kit | PartsGeek |
| 21489 | Battery disconnect switch - 500A cont. | 1 | Service part / kit | PartsGeek |
| 24777 | Cable, red battery 54" | 1 | Service part / kit | PartsGeek |
| 24778 | Cable, black battery 15" | 1 | Service part / kit | PartsGeek |
| 26387 | Decal Set, Rear Hood Latch | 1 | Service part / kit | PartsGeek |
| 27187 | Radiator | 1 | Service part / kit | PartsGeek FridayParts $59.99 |
| 27243 | Engine, Kubota V3600 | 1 | Service part / kit | PartsGeek |
| 27719B | Tank, fuel - 110 gal | 1 | Service part / kit | PartsGeek |
| 28964 | Decal, Engine Block Heater (Optional for MMG45FHK, Standard for MMG45FHKCAN and MMG45FHKCAN6) | 1 | Service part / kit | PartsGeek |
| 31024 | Decal, Fan Clutch (Optional for MMG45FHK, Standard for MMG45FHKCAN and MMG45FHKCAN6) | 1 | Service part / kit | PartsGeek |
| 34424 | Decal Set, Voltage Selector Switch (x2) | 1 | Service part / kit | PartsGeek |
| MMG45K | Generator Make: _______________________________________ Generator Model Number:________________________________ Generator Serial Number: ________________________________ | Service part / kit | PartsGeek |
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 | |||
| Prime | 50% | 5.7 | 1.5 |
| Prime | 75% | 8.7 | 2.3 |
| Prime | 100% | 11.4 | 3.0 |
| Standby |
Available documents
Spec sheet — MMG45FHK Mobile (Generac)Owner's manual — 24594 (Generac)Owner's manual — 29663 (Generac)Parts manual — 20935 (Generac)