Service parts for the MLT4200IF4
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 20 kW |
| Prime power | 20 kW |
| Emissions | 4 |
| Controller | Engraved aluminum punched |
| Oil capacity | 10.4 L |
| Alternator | Marathon 334CSA3028 |
| Voltage options | 120/240 V |
| Phase | Single |
| Rated current | 167 A |
| Circuit breaker | 100 A |
| Battery cranking | 720 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Max ambient | 49 °C |
| Dimensions (L×W×H) | 2921×1727×2718 mm |
| Dry weight | 1033 kg |
| Wet weight | 1176 kg |
| Sound level | 68.0 dBA @ 7 m |
| Fuel tank | 194.5 L |
| Tank runtime | 48 hr |
Engine
| Oil capacity | 10.4 L |
|---|---|
| Coolant capacity | 17.0 L |
| Displacement | 2.18 L |
| Aspiration | Liquid cooled |
| Rated speed | 1800 rpm |
Same engine, other brands
3 brandsThe Isuzu 4LE2TAGV-03 in this set also powers 4 generator sets sold under 3 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| Magnum | MLT4200IF4, MMG25IF4 |
| Isuzu | 4LE2TAGV-03 |
| John Deere | MLG20IF4 |
Maintenance & consumables
for the Isuzu 4LE2TAGV-03| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry type cartridge air filter | — | 250 hr | ||
| Fuel filter | Fuel filter with replaceable element | 69858 | 500 hr | Amazon eBay $21.83 NAPA $15.34 FridayParts $36.28 | |
| Oil filter | Full flow oil filter, spin on type | 670570304 | 1000 hr | Amazon eBay $16.89 PartsGeek $7.98 NAPA $9.09 FridayParts $20.19 | |
| Battery | Clean Battery | — | 1000 hr | ||
| Belt | Check Fan Belt Tension (Replace If Necessary) | — | 1000 hr | ||
| Coolant | Check Coolant Level | — | 250 hr | ||
| Oil | Check Oil Level | — | 250 hr | ||
| Spark plug | Replace Air Filter Element | — | 1000 hr |
Compatible filters for the Isuzu 4LE2TAGV-03 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
- Air filter: Generac OE3557 Generac OE3656 Isuzu 8972319000 Isuzu 5864014350 Isuzu 8972599390
Common questions
What is the power rating of the Generac MLT4200IF4?
The Generac MLT4200IF4 is rated 20 kW standby.
What engine does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 is powered by the Isuzu 4LE2TAGV-03 engine.
What fuel does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 runs on diesel.
What is the oil capacity of the Generac MLT4200IF4?
The Isuzu 4LE2TAGV-03 engine in the Generac MLT4200IF4 has an oil capacity of 10.4 liters.
How much coolant does the Generac MLT4200IF4 hold?
The Generac MLT4200IF4 cooling system holds 17 liters (4.5 US gallons) for the engine, per the manufacturer specification sheet.
What is the sound level of the Generac MLT4200IF4?
The Generac MLT4200IF4 is rated at 68.0 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the Generac MLT4200IF4?
The Generac MLT4200IF4 has a dry weight of 1033 kg (2277 lb).
What size fuel tank does the Generac MLT4200IF4 have?
The Generac MLT4200IF4 has a 194.5 liter (51 US gallon) fuel tank, giving about 48 hours of runtime.
What voltages is the Generac MLT4200IF4 available in?
The Generac MLT4200IF4 is offered in 120/240 V, Single-phase.
What battery does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 uses 1 battery, 12 V each, 720 CCA, per the manufacturer specification sheet.
Which alternator is fitted to the Generac MLT4200IF4?
The Generac MLT4200IF4 uses a Marathon 334CSA3028 alternator.
What oil filter does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 uses oil filter part number 670570304.
What fuel filter does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 uses fuel filter part number 69858.
What air filter fits the Generac MLT4200IF4?
The Generac MLT4200IF4 uses air filter part numbers GENERAC OE3557, GENERAC OE3656.
Troubleshooting
39Fault codes
| Code | Meaning |
|---|---|
| Check Engine Fault | A fault not recognized by the controller has been detected. |
| Low Oil Pressure | Engine oil pressure has fallen below its configured low oil pressure alarm level. |
| Underspeed | Engine speed has fallen below its configured underspeed alarm level. |
| Overspeed | Engine speed has risen above its configured overspeed alarm level. |
| Low Fuel Level | Engine’s fuel level has fallen below its configured low fuel level alarm. |
| Battery Under/Over Voltage | Engine’s DC supply has fallen below or risen above its configured alarm level. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Unit cranks, but will not start | Fuel level low | Check fuel level in tank |
| Unit cranks, but will not start | Fuel flow obstructed | Verify fuel pump operation |
| Unit cranks, but will not start | Fuel solenoid inoperable | Verify fuel solenoid operation |
| Unit cranks, but will not start | Air in fuel system | Bleed air from fuel system |
| Unit cranks, but will not start | Restricted air filter | Inspect air filter for blockage |
| Unit cranks, but will not start | Glow plug(s) inoperable | Inspect fuel supply hose from tank to fuel filter for cracks and abrasion; Check for gelled fuel in fuel system in cold weather, especially at fuel filter; Refer to OEM engine operator's manual for additional information |
| Unit starts, but stumbles and dies | Ambient temperature too low | Check if ambient temperature is within unit limits |
| Unit starts, but stumbles and dies | Intake heater inoperable | Check engine air inlet heater functionality |
| High coolant temperature shutdown | Low coolant level | Allow engine to cool, then check coolant level in radiator. Add coolant if needed |
| High coolant temperature shutdown | Blockage in radiator | Inspect radiator surroundings for blockage and remove any foreign matter |
| High coolant temperature shutdown | Debris on radiator face | Inspect radiator surroundings for blockage and remove any foreign matter |
| High coolant temperature shutdown | Broken coolant pump belt | Inspect for visible leaks. Verify tension of water pump drive belt |
| High coolant temperature shutdown | Cooling fan inoperable | Remove load on generator and restart engine. Verify coolant temperature and shut engine down immediately if it starts to overheat |
| Low oil pressure shutdown | Oil level low | Check oil level. Add oil if necessary |
| Low oil pressure shutdown | Oil pump inoperable | |
| Unit stalls when export power is used | Load exceeds unit rating | Turn outlet breaker ON and load sense switch OFF, confirm generator output is 60hz + or - 2hz. Reapply load |
| The lights are flashing | Dusk-to-dawn sensor adjustment needed | Adjust the dusk-to-dawn sensor to increase or decrease light received |
| The lights are flashing | Generator frequency too low | Turn off main breaker; Check if AC frequency is >40hz |
| Mast Lights Off, Checking Outside the Control Box | Light fixture is too hot | Allow light to cool 10-15 minutes before restarting |
| Mast Lights Off, Checking Outside the Control Box | Faulty lamp connection | Check that the lamp is tight in the socket |
| Mast Lights Off, Checking Outside the Control Box | Lamp broken | Check for broken arc tube or outer lamp jacket, broken or loose components in lamp envelope, or blackening/deposits inside tube |
| Mast Lights Off, Checking Outside the Control Box | Loose lighting connections | Check the connections inside the mast junction box and each mast light housing/socket |
| Mast Lights Off, Checking Outside the Control Box | Damaged or loose electrical cord | Check the mast electrical cord for damage and check the cord connections inside the control box |
| Mast Lights Off, Checking Inside the Control Box | Loose lighting connections | Check the connections inside the control box and inside each ballast box |
| Mast Lights Off, Checking Inside the Control Box | Generator output incorrect | Check the incoming voltage to the ballast by checking the available voltage on the GFCI receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed may need to be adjusted or generator may require service |
| Mast Lights Off, Checking Inside the Control Box | Low transformer output | The voltage from the transformer should read approximately 400VAC as the light "strikes" (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced |
| Mast Lights On But the Light Output is Low | Fixture and/or lens is dirty | Clean reflective surface inside fixture and both inside and outside surface of glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the glass |
| Mast Lights On But the Light Output is Low | Lamp worn due to normal use | Replace lamp |
| Mast Lights On But the Light Output is Low | Damaged or loose electrical connections | Check the mast coil cord, mast junction box and mast light connections |
| Mast Lights On But the Light Output is Low | Generator output incorrect | Check the incoming voltage to the ballast. Incoming voltage should be 120V +/-5V. If the voltage is incorrect, the engine speed may need to be adjusted or the generator may require service |
| Mast Lights On But the Light Output is Low | Low transformer output | The voltage from the transformer should read approximately 400VAC as the light "strikes" (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced |
| One or more lights do not turn on | Light breaker tripped | Check light breakers |
| One or more lights do not turn on | Lights not turned on | Check electronic control to see if lights are on; Turn lights on |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 01035 | Central Lift Point | Central lift point | Amazon eBay | |
| 01144 | Controller | Controller | Amazon eBay | |
| 90243 | Air Filter Element | Air filter | Amazon eBay | |
| 209649 | Form: SFC626B | 1 | Service 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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Continuous | 3.97 | 1.05 | |
| Continuous | 100% | 7.8 | 2.1 |
| Prime | 5% | 3.97 | 1.05 |
| Prime | 100% | 7.8 | 2.1 |
Available documents
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.