Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 40 kW |
| Prime power | 20 kW |
| Alternator | Marathon 334CSA3028 |
Maintenance & consumables
for the Isuzu 4LE2TAGV-03| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 250 hr | find | ||
| Fuel filter | 69858 | 500 hr | Amazon eBay $42.74 PartsGeek | ||
| Oil filter | 670570304 | 1000 hr | PartsGeek FridayParts $20.19 | ||
| Belt | — | 1000 hr | find | ||
| Coolant | — | 250 hr | |||
| Oil | — | 250 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 40 kW standby.
What engine does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 is powered by the Isuzu 4LE2TAGV-03 engine.
What alternator does the Generac MLT4200IF4 use?
The Generac MLT4200IF4 uses a Marathon 334CSA3028 alternator.
Troubleshooting
6Fault 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. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
32| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 002306 | Grease for trailer wheel bearings | Fluid | PartsGeek | |
| 002327 | Remote Start Terminal Block | Remote start terminal block | PartsGeek | |
| 00243 | Grease | Oil | PartsGeek | |
| 002807 | WHITE Incoming utility power GRAY Normal utility power circuit BLACK Emergency generator power circuit | Transfer switch | PartsGeek | |
| 003784 | Lubricant for winch maintenance | Fluid | PartsGeek | |
| 003984 | Remote Start Terminal Block | Remote start terminal block | PartsGeek | |
| 006983 | Transfer Switch | Transfer switch | PartsGeek | |
| 00852 | Home and generator voltage and frequency operator screens | Operator screen | PartsGeek | |
| 90243 | Grease | Grease | PartsGeek | |
| 00131 | PROPER MAST CABLE ROUTING | Service part / kit | PartsGeek | |
| 00194 | Breakers Located Behind The Panel | Service part / kit | PartsGeek | |
| 00204 | Use Lower Forklift Pockets To Lift Do NOT Use To Lift | Service part / kit | PartsGeek | |
| 00206 | Transfer Switch Diagram | Service part / kit | PartsGeek | |
| 00229 | Water Supply and Mast Lowering Instructions | Service part / kit | PartsGeek | |
| 002329 | Scheduler Screen | Service part / kit | PartsGeek | |
| 002354 | Operator Screens | Service part / kit | PartsGeek | |
| 002355 | Spark Arrester | Service part / kit | PartsGeek | |
| 002544 | Home Screen | Service part / kit | PartsGeek | |
| 003779 | Maintenance Screen | Service part / kit | PartsGeek | |
| 003780 | Event Log Screen | Service part / kit | PartsGeek | |
| 003781 | Faults | Service part / kit | PartsGeek | |
| 003782 | Underspeed | Service part / kit | PartsGeek | |
| 003975 | Service part / kit | PartsGeek | ||
| 003980 | High Voltage. Verify area above unit is clear of overhead wires and obstructions. Contact with high-voltage power lines will result in death or serious injury. | Service part / kit | PartsGeek | |
| 003981 | WARNING Consult Manual. Read and understand manual completely before using product. Failure to completely understand manual and product could result in death or serious injury. | Service part / kit | PartsGeek | |
| 004551 | Do Not Start sign | Service part / kit | PartsGeek | |
| 00851 | Stop/Reset Mode LED | Service part / kit | PartsGeek | |
| 00886 | Remote Start Switch Terminals | Service part / kit | PartsGeek | |
| 00899 | Turn Lights On or Off Individually | Service part / kit | PartsGeek | |
| 00900 | MTT20IF4 | 1 | Service part / kit | PartsGeek |
| 00908 | Use Lower Forklift Pockets To Lift Do NOT Use To Lift | Service part / kit | PartsGeek | |
| 209649 | Form: SFC626B | 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 | |||
| Standby |
Available documents
Owner's manual — 37096 (Generac)