Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 68 kW |
| Standby kVA | 85 |
| Prime power | 60 kW |
| Emissions | EPA Tier 4 |
| Controller | DSE7310 MKII, Electronics 7310 MKII, Power Zone |
| Oil capacity | 15.0 L |
| Alternator | 361CSL1602 |
| Voltage options | 480 V, 208 V, 240 V |
| Phase | 1 or 3 |
| Rated current | 250 A |
| Power factor | 0.8 |
| Circuit breaker | 300 A |
| Battery group | 31 |
| Battery cranking | 720 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 21.0 L |
| Max ambient | 49 °C |
| Dimensions (L×W×H) | 3020×1020×1570 mm |
| Dry weight | 1 kg |
| Wet weight | 2 kg |
| Sound level | 74.0 dBA @ 7 m |
| Fuel tank | 624.6 L |
| Tank runtime | 30 hr |
Engine
| Oil capacity | 21.0 L |
|---|---|
| Coolant capacity | 26.1 L |
| Displacement | 4.5 L |
| Aspiration | Turbocharged, Charge Air-Cooled |
| Rated speed | 1800 rpm |
Filters for the John Deere 4045HFG04
6Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P551352 | Lube Filter, Spin-On Full Flow | JOHN DEERE DZ118286, JOHN DEERE PMLF3703, NAPA 401062, BALDWIN B40168 | buy |
| Oil filter | P550020 | Lube Filter, Spin-On Full Flow | JOHN DEERE AR58956, JOHN DEERE AT19044T, NAPA 1243, RENAULT VI 0003132302 | KuduParts $23.00 FridayParts $25.67 |
| Fuel filter | P551130 | Fuel Filter, Box | JOHN DEERE AR50041, JOHN DEERE R16951, NAPA 3370, BALDWIN BF909 | KuduParts $37.00 |
| Fuel filter | P550090 | Fuel Filter, In-Line | JOHN DEERE AE20952, JOHN DEERE AT101565, ASV INCORPORATED 0201914, LOESING 025125 | FridayParts $45.66 |
| Fuel / water separator | P551423 | Fuel Filter, Water Separator Spin-On | JOHN DEERE RE503254, JOHN DEERE RE50455, NAPA 3531, NAPA 600091 | KuduParts $18.00 FridayParts $20.00 |
| Fuel / water separator | P551424 | Fuel Filter, Water Separator Spin-On | JOHN DEERE RE503198, JOHN DEERE RE522868, NAPA 3532, NAPA 600094 | KuduParts $16.00 FridayParts $18.50 |
Same engine, other brands
1 brandThe John Deere 4045HFG04 in this set also powers 2 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| Kohler | 80REOZJ4, 90REOZT4 |
Maintenance & consumables
for the John Deere 4045HFG04| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Primary | — | |||
| Oil filter | Cartridge | ×1 | — |
Compatible filters for the John Deere 4045HFG04 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
Service intervals
17| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Coolant | Other | 3 hr | 36 mo | Add coolant |
| DEF tank | Clean | 3 hr | 36 mo | |
| Fuel system | Other | 3 hr | 36 mo | Bleed fuel system |
| Fuses | Check | 3 hr | 36 mo | |
| Engine oil and oil filter | Change | 250 hr | First service — First change at 100 hours | |
| Oil vapor recirculation system/non-return valve | Check | 250 hr | ||
| Air intake hoses, connections and system | Check | 500 hr | 12 mo | |
| Automatic belt tensioner and belt wear | Check | 500 hr | 12 mo | |
| Cooling system | Check | 500 hr | 12 mo | |
| Engine electrical ground connection | Check | 500 hr | 12 mo | |
| Engine mounts | Check | 500 hr | 12 mo | |
| Fan belt | Inspect | 500 hr | 12 mo | Remove and check for wear; inspect pulleys/bearings |
| Generator drive plate torque | Check | 500 hr | 12 mo | |
| Leveling jacks | Lubricate | 500 hr | 12 mo | |
| Thermostats | Test | 500 hr | 12 mo | |
| Wheel bearings | Inspect | 500 hr | 12 mo | Increased inspection required under dusty or damp conditions |
| Trailer wheel bearings | Lubricate | 12 mo | or every 12,000 miles (19,312 km) |
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
12| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Oil pressure shutdown threshold | 5 | psi (34 kPa) | within five seconds of start |
| Speed | Low idle speed | 1,000-1,200 | rpm | |
| Speed | Ramp-up run speed | 1,800 | rpm | after 15 seconds at idle if idle switch OFF |
| Temperature | DEF freezing point | 12 | °F (-11°C) | |
| Temperature | DEF quality degrades above | 140 | °F (60°C) | |
| Temperature | Engine overheating shutdown threshold | 230 | °F | |
| Temperature | High coolant temperature shutdown | 210 | °F (99°C) | |
| Temperature | Maximum allowable coolant temperature limit | 235 | °F (113°C) | |
| Torque | Generator drive plate bolts | 40 | ft-lb (54 Nm) | |
| Torque | Trailer wheel lug nuts, first pass | 20-25 | ft-lb (27-33 Nm) | |
| Torque | Trailer wheel lug nuts, second pass | 50-60 | ft-lb (67-81 Nm) | |
| Torque | Trailer wheel lug nuts, third pass | 90-120 | ft-lb (122-162 Nm) |
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
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | ethylene glycol antifreeze/water | 21.0 L (5.5 gal) | 50% water/50% antifreeze = -12°F(-24°C); 40/60 = -34°F(-36°C); max freeze protection 60% antifreeze = -54°F(-48°C) to -90°F(-67°C) | ||
| Def | AUS 32 per ISO 22241-1 | ISO 22241 / API DEF Certification / AdBlue | 41.6 L | 31.8-33.2% urea concentration; freezes below 12°F (-11°C); degrades above 140°F (60°C) | |
| Engine oil | John Deere Plus-50 / Plus-50 II; Torq-Gard Supreme; API CJ-4, CI-4 PLUS, CI-4, CH-4; ACEA E9, E7, E6, E5, E4 | API/ACEA | 15.0 L (3.92 gal, including filter) | 500-hour extended interval requires extended-drain oil pan, <2000 ppm sulfur fuel, John Deere Plus-50/Plus-50 II oil and approved filter | |
| Fuel | diesel | 641.85 L | Fuel tank capacity; usable 567.94 L |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Fault codes
4| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| Emergency Stop | Emergency Stop indicator LED | Emergency Stop switch is active (pushed in). | Shutdown | Deactivate (pull out) Emergency Stop switch. |
| Low Load | Low Load indicator LED | Genset has operated at less than 30% capacity for more than 15 minutes. | Warning | Increase electrical load or use a smaller generator. |
| Lug Door Open | Lug Door Open indicator LED | Lug-box door is open. | Warning | Close lug-box door; inspect door safety switch if unresolved. |
| Shutdown | Shutdown indicator LED | A shutdown alarm is present. | Shutdown | Resolve shutdown condition. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
2Check Generator Drive Plate Torque maintenance
Tools: torque wrench
- Disconnect battery.
- Remove generator fan guard.
- Tighten each of the drive plate bolts to 40 ft-lb (54 Nm).
- Install generator fan guard.
- Connect battery.
Manually Starting the Unit operation
⚠ Do not attempt to start a unit in need of repair or scheduled maintenance
⚠ Carbon monoxide/asphyxiation hazard
- Set controller power to ON; the controller boots in STOP mode.
- Press engine START button; controller begins startup sequence if no faults.
- If engine fails to start within three crank attempts, alarm displays; wait 2 minutes to retry.
- Allow engine to warm for approximately 10 minutes before loading.
- Turn OFF the Low Idle Speed switch when engine is warm.
- Check for excessive noise, vibration, or coolant/oil/fuel leaks before applying loads.
- Verify AC output voltage and frequency are correct.
- Switch main circuit breaker ON, then switch on individual load breakers.
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
What is the power rating of the Generac MDG75DF4?
The Generac MDG75DF4 is rated 68 kW standby (85.0 kVA).
What engine does the Generac MDG75DF4 use?
The Generac MDG75DF4 is powered by the John Deere 4045HFG04 engine.
What fuel does the Generac MDG75DF4 use?
The Generac MDG75DF4 runs on diesel.
How much oil does the Generac MDG75DF4 take?
The John Deere 4045HFG04 engine in the Generac MDG75DF4 has an oil capacity of 21.0 liters.
What is the cooling system capacity of the Generac MDG75DF4?
The Generac MDG75DF4 cooling system holds 21 liters (5.5 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Generac MDG75DF4?
The Generac MDG75DF4 is rated 60 kW prime (75 kVA), against 68 kW standby.
How loud is the Generac MDG75DF4?
The Generac MDG75DF4 is rated at 74.0 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the Generac MDG75DF4?
The Generac MDG75DF4 has a dry weight of 1 kg (2 lb).
How big is the fuel tank on the Generac MDG75DF4?
The Generac MDG75DF4 has a 624.6 liter (165 US gallon) fuel tank, giving about 30 hours of runtime.
What voltages is the Generac MDG75DF4 available in?
The Generac MDG75DF4 is offered in 480 V, 208 V, 240 V, 1 or 3-phase.
How many cold cranking amps does the Generac MDG75DF4 require?
The Generac MDG75DF4 uses 1 battery, 12 V each, 720 CCA, group 31, per the manufacturer specification sheet.
What alternator does the Generac MDG75DF4 use?
The Generac MDG75DF4 uses a 361CSL1602 alternator.
What oil filter fits the Generac MDG75DF4?
The Generac MDG75DF4 uses oil filter part numbers KOHLER GM32809, KOHLER 360031.
What fuel filter fits the Generac MDG75DF4?
The Generac MDG75DF4 uses fuel filter part numbers KOHLER GM50006, KOHLER 336661.
Troubleshooting
4Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Low Load indicator LED illuminates when genset has operated at less than 30% capacity for more than 15 minutes. | Resolve by increasing electrical load. If unable to operate genset at more than 30% load, use a smaller generator. |
| Lug Door Open indicator LED illuminates when lug-box door is open. | Resolve by closing lug-box door. If condition remains unresolved, inspect lug-box door safety switch for proper operation. |
| Emergency Stop indicator LED illuminates when Emergency Stop switch is active (pushed in). | Resolve by deactivating (pulling out) Emergency Stop switch. |
| Shutdown indicator LED illuminates when a shutdown alarm is present. | Resolve by resolving shutdown condition. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Repair guides
2Step-by-step procedures compiled from the Generac service manual for this model.
Parts
45| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 10000015220 | Panel, rear | 1 | Service part / kit | Amazon eBay |
| 10000015222 | Duct, rear | 1 | Service part / kit | Amazon eBay |
| 10000024262 | Decal, phase switch warning | 1 | Service part / kit | Amazon eBay |
| 10000024936 | Right rear corner assembly | 1 | Service part / kit | Amazon eBay |
| 10000024948 | Front hood assembly | 1 | Service part / kit | Amazon eBay |
| 10000024956 | Rear panel assembly | 1 | Service part / kit | Amazon eBay |
| 10000024971 | Foam, duct - side | 1 | Service part / kit | Amazon eBay |
| 10000024974 | Foam, rear duct - right | 1 | Service part / kit | Amazon eBay |
| 10000024975 | Left rear corner assembly | 1 | Service part / kit | Amazon eBay |
| 10000024976 | Left rear door assembly | 1 | Service part / kit | Amazon eBay |
| 10000024982 | Foam, control door | 1 | Service part / kit | Amazon eBay |
| 10000024983 | Foam, rear duct | 1 | Service part / kit | Amazon eBay |
| 10000024994 | Foam, rear duct - left | 1 | Service part / kit | Amazon eBay |
| 10000025002 | Foam, rear panel | 1 | Service part / kit | Amazon eBay |
| 10000027288 | Door, control - paralleling option | 1 | Service part / kit | Amazon eBay |
| 10000029864 | Decal set, MDG75 mechanical group | 1 | Service part / kit | Amazon eBay |
| 10000030536 | Foam, control door - paralleling option | 1 | Service part / kit | Amazon eBay |
| 10000030555 | Right rear corner assembly - paralleling | 1 | Service part / kit | Amazon eBay |
| 10000030564 | End panel assembly | 2 | Service part / kit | Amazon eBay |
| 10000030582 | Control door assembly - paralleling | 1 | Service part / kit | Amazon eBay |
| 12142 | Decal, ground | 1 | Service part / kit | Amazon eBay NAPA $74.66 |
| 20677W | Duct, rear air | 1 | Service part / kit | Amazon eBay |
| 20795SRV | Foam, corner common | 1 | Service part / kit | Amazon eBay |
| 20798SRV | Foam, duct - face | 1 | Service part / kit | Amazon eBay |
| 20916Z | Bracket, prop rod | 1 | Service part / kit | Amazon eBay |
| 26386 | Decal, Pinch Point | 1 | Service part / kit | Amazon eBay NAPA $45.89 |
| 30401W | Panel, end | 2 | Service part / kit | Amazon eBay |
| 30402SRV | Foam, end panel | 2 | Service part / kit | Amazon eBay |
| 30645 | Panel, emergency stop | 1 | Service part / kit | Amazon eBay |
| 32107W | Panel, left rear | 1 | Service part / kit | Amazon eBay |
| 32124W | Panel, side | 3 | Service part / kit | Amazon eBay |
| 32125SRV | Roof assembly | 1 | Service part / kit | Amazon eBay |
| 32286SRV | Foam, side panel | 3 | Service part / kit | Amazon eBay |
| 33313SRV | Control door assembly | 1 | Service part / kit | Amazon eBay |
| 33642 | Window, control door - UV | 1 | Service part / kit | Amazon eBay |
| 34989SRV | Assembly, E-stop switch | 1 | Service part / kit | Amazon eBay |
| 393531 | Side panel assembly | 3 | Service part / kit | Amazon eBay |
| 50876 | Decal, positive battery disconnect | 1 | Service part / kit | Amazon eBay |
| 51552 | Decal, high temp | 1 | Service part / kit | Amazon eBay |
| 60095 | Nut, .312-18 sflg | 2 | Service part / kit | Amazon eBay |
| 60268 | Rivet, .188 dia. x .126 to .250 grip, SS | 4 | Service part / kit | Amazon eBay |
| 60505 | Nut, .312-18 U-clip - long type | 4 | Service part / kit | Amazon eBay |
| 61091 | Screw, .312-18 x 1.00 ser flg hd | 14 | Service part / kit | Amazon eBay |
| 65470 | Switch, E-stop operator | 1 | Service part / kit | Amazon eBay NAPA $61.00 |
| 65580 | Block, E-stop contactor | 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 |
|---|---|---|---|
| Prime | 50% | 12.02 | 2.69 |
| Prime | 75% | 17.07 | 3.74 |
| Prime | 100% | 22.72 | 4.85 |
| Standby | 75% | 14.0 | 4.9 |
Available documents
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.