Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 85 kW |
| Standby kVA | 106 |
| Prime power | 80 kW |
| Emissions | EPA Tier 4 |
| Controller | DSE7310 MKII, Power Zone |
| Oil capacity | 15.0 L |
| Alternator | 362CSL1606 |
| Voltage options | 480 V, 208 V, 240 V |
| Phase | 1 or 3 |
| Rated current | 354.17 A |
| Power factor | [1.0, 0.8] |
| Circuit breaker | 400 A |
| Battery group | 31 |
| Battery cranking | 1000 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 |
| Fuel tank | 624.6 L |
| Tank runtime | 24 hr |
Engine
| Oil capacity | 15.0 L |
|---|---|
| Displacement | 4.5 L |
| Aspiration | Turbo/air-to-air, after-cooled |
| Rated speed | 1800 rpm |
Filters for the John Deere 4045HFG04A
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 |
Maintenance & consumables
for the John Deere 4045HFG04A| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | — | ||||
| Spark plug | — |
Compatible filters for the John Deere 4045HFG04A — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
- Air filter: John Deere AL204809 John Deere AT390262 John Deere AT390261 John Deere AL119839 John Deere AL150285
- Fuel filter: John Deere AE20952 John Deere AT274723 John Deere RE62418 John Deere RE62419 John Deere RE509208
- Oil filter: John Deere RE519987 John Deere MIU800650 John Deere DZ118286 Donaldson P550779 Donaldson P502051
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 size generator is the Generac MDG100DF4?
The Generac MDG100DF4 is rated 85 kW standby (106.0 kVA).
Which engine powers the Generac MDG100DF4?
The Generac MDG100DF4 is powered by the John Deere 4045HFG04A engine.
Is the Generac MDG100DF4 diesel or gas?
The Generac MDG100DF4 runs on diesel.
What's the oil capacity on a Generac MDG100DF4?
The John Deere 4045HFG04A engine in the Generac MDG100DF4 has an oil capacity of 15.0 liters.
What is the cooling system capacity of the Generac MDG100DF4?
The Generac MDG100DF4 cooling system holds 21 liters (5.5 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the continuous rating of the Generac MDG100DF4?
The Generac MDG100DF4 is rated 80 kW prime (100 kVA), against 85 kW standby.
How much does the Generac MDG100DF4 weigh?
The Generac MDG100DF4 has a dry weight of 1 kg (2 lb).
What size fuel tank does the Generac MDG100DF4 have?
The Generac MDG100DF4 has a 624.6 liter (165 US gallon) fuel tank, giving about 24 hours of runtime.
What voltage does the Generac MDG100DF4 produce?
The Generac MDG100DF4 is offered in 480 V, 208 V, 240 V, 1 or 3-phase.
What size battery does the Generac MDG100DF4 need?
The Generac MDG100DF4 uses 1 battery, 12 V each, 1000 CCA, group 31, per the manufacturer specification sheet.
What alternator comes on the Generac MDG100DF4?
The Generac MDG100DF4 uses a 362CSL1606 alternator.
What oil filter fits the Generac MDG100DF4?
The Generac MDG100DF4 uses oil filter part numbers JOHN DEERE RE519987, JOHN DEERE MIU800650.
Which fuel filter part number does the Generac MDG100DF4 take?
The Generac MDG100DF4 uses fuel filter part numbers JOHN DEERE AE20952, JOHN DEERE AT274723.
What air filter does the Generac MDG100DF4 use?
The Generac MDG100DF4 uses air filter part numbers JOHN DEERE AL204809, JOHN DEERE AT390262.
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
63| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 010418 | Fuel filter | 1 | Controller screen | Amazon eBay $22.46 |
| 010419 | Air filter | 1 | Air filter | Amazon eBay |
| 010420 | Coolant and filter | 1 | Coolant | Amazon eBay FridayParts $151.60 |
| 010421 | Belt | 1 | Belt | Amazon eBay |
| 010422 | Battery service | 1 | Battery service | Amazon eBay $50.00 |
| 010423 | Spark plugs | 1 | Alarm mute and lamp test button | Amazon eBay |
| 010424 | (F) Engine Start Button | Auto mode led | Amazon eBay | |
| 010425 | (G) Alarm Mute and Lamp Test Button | Alarm mute and lamp test button | Amazon eBay | |
| 010426 | (H) AUTO Mode LED | Auto mode led | Amazon eBay | |
| 010427 | (I) AUTO Mode Button | Auto mode button | Amazon eBay | |
| 010428 | (J) PAS valve test switch LED (if equipped) | Manual mode button | Amazon eBay | |
| 010429 | (K) PAS valve test switch (if equipped) | Engine stop reset mode button | Amazon eBay | |
| 010430 | (L) Maintenance Alarms | Engine stop reset mode led | Amazon eBay | |
| 010431 | Open generator button | Open generator button | Amazon eBay | |
| 010432 | Open generator LED | Open generator led | 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 |
| 10000024975 | Left rear corner assembly | 1 | Service part / kit | Amazon eBay |
| 10000024976 | Left rear door assembly | 1 | Service part / kit | Amazon eBay |
| 10000024981 | Foam, front flip hood - right front side | 1 | Service part / kit | Amazon eBay |
| 10000025269 | Foam, front flip hood, ceramic - top | 1 | Service part / kit | Amazon eBay |
| 10000028027 | Foam, front flip hood - right rear side | 1 | Service part / kit | Amazon eBay |
| 10000029864 | Decal set, MDG75 mechanical group | 1 | Service part / kit | Amazon eBay |
| 10000030557 | Assembly, door, left rear | 2 | Service part / kit | Amazon eBay |
| 10000030564 | End panel assembly | 2 | Service part / kit | Amazon eBay |
| 12142 | Decal, ground | 1 | Service part / kit | Amazon eBay NAPA $74.66 |
| 18460 | Hinge, left (female) | 2 | Service part / kit | Amazon eBay |
| 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 |
| 26288 | Handle, front hood access | 1 | Service part / kit | Amazon eBay NAPA $8.87 |
| 26386 | Decal, Pinch Point | 1 | Service part / kit | Amazon eBay NAPA $45.89 |
| 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 |
| 32302SRV | Foam, front flip hood - top | 1 | Service part / kit | Amazon eBay |
| 32309SRV | Foam, front flip hood - front | 1 | Service part / kit | Amazon eBay |
| 32535W | Panel, front right inside hood | 1 | Service part / kit | Amazon eBay |
| 32706W | Panel, front hood | 1 | Service part / kit | Amazon eBay |
| 32707W | Panel, front hood - top | 1 | Service part / kit | Amazon eBay |
| 32723B | Panel, exhaust grate | 1 | Service part / kit | Amazon eBay |
| 32822SRV | Foam, front flip hood - front top | 1 | Service part / kit | Amazon eBay |
| 32823SRV | Foam, front flip hood - front bottom | 1 | Service part / kit | Amazon eBay |
| 33312W | Door, control | 1 | 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 |
| 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 |
| 60303 | Nut, .312-18 nylock, G2 | 4 | Service part / kit | Amazon eBay |
| 60340 | Washer, .312 flat .875/.040, SS | 2 | Service part / kit | Amazon eBay FridayParts $24.95 |
| 60452 | Washer, .313 flat 1.125/1.0 bonded rubber, SS | 1 | Service part / kit | Amazon eBay |
| 60505 | Nut, .312-18 U-clip - long type | 4 | Service part / kit | Amazon eBay |
| 60507 | Screw, .312-18x1.0 std hex, SS | 2 | Service part / kit | Amazon eBay $40.99 |
| 61066 | Screw, .312-18 x 1.0 carr sqr, SS | 4 | Service part / kit | Amazon eBay |
| 62086 | Nut, .312-18 U-clip - short type | 2 | Service part / kit | Amazon eBay |
| A0001578044 | Assembly, control box | 2 | 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 | 24.11 | 6.37 | |
| Prime | 50% | 12.02 | 2.69 |
| Prime | 75% | 17.07 | 3.74 |
| Prime | 100% | 22.72 | 4.85 |
| Standby | 24.11 | 6.37 |
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.