Service parts for the MMG35DF4
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredCooling system
1 requiredElectrical
1 requiredIgnition
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 | 31 kW |
| Standby kVA | 39 |
| Prime power | 29 kW |
| Emissions | EPA Tier F4 |
| Controller | Power Zone |
| Oil capacity | 10.4 L |
| Alternator | Marathon 284CSL1542 |
| Voltage options | 120 V, 139 V, 208 V, 220 V, 240 V, 277 V, 440 V, 480 V |
| Phase | 1 or 3 |
| Power factor | 1 (1Ø), 0.8 (3Ø) |
| Circuit breaker | 125 A |
| Battery group | 24 |
| Battery cranking | 720 CCA |
| Battery voltage | 12V V |
| Battery quantity | 1 |
| Coolant capacity | 17 L |
| Dry weight | 1418 kg |
| Wet weight | 1751 kg |
| Sound level | 68.0 dBA @ 7.0 m |
| Fuel tank | 379.0 L |
| Tank runtime | 31 hr |
Engine
| Oil capacity | 10.4 L |
|---|---|
| Coolant capacity | 17.0 L |
| Displacement | 2.9 L |
| Aspiration | Turbocharged & Aftercooled |
| Rated speed | 1800 rpm |
Filters for the John Deere 3029HFG03
3Engine-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 | 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 / 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 |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 010419 | 250 hr | Amazon eBay | ||
| Fuel filter | 010418 | 250 hr | Amazon eBay $22.46 | ||
| Oil filter | 670570304 | 50 hr | Amazon eBay $16.89 PartsGeek $7.98 NAPA $9.09 FridayParts $20.19 | ||
| Battery | 010422 | 250 hr | Amazon eBay $50.00 | ||
| Belt | 010421 | 250 hr | Amazon eBay | ||
| Coolant | 010420 | 250 hr | Amazon eBay FridayParts $151.60 | ||
| Oil | — | 250 hr | |||
| Spark plug | 010423 | 250 hr | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service intervals
30| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Engine Oil (Isuzu) | Change | 50 hr | First service — First 50 hours (break-in period) | |
| Oil Filter Element Replacement | Replace | 500 hr | First service — Isuzu, first 50 hours and every 500 hours | |
| Engine Oil and Oil Filter (John Deere) | Change | 500 hr | 12 mo | First service — First 100 hours break-in, factory fill; do not exceed 100 hours with break-in oil |
| Check Oil Vapor Recirculation System/Non-Return Valve | Check | 250 hr | John Deere engine | |
| Engine Oil (Isuzu, MMG25IF4) | Change | 250 hr | Every 250 hours, MMG25IF4 only | |
| Change Engine Oil and Replace Oil Filter | Change | 500 hr | 12 mo | First service — John Deere; decrease to every 250 hours if not using John Deere Plus 50 II oil |
| Engine Oil (Isuzu, MMG45IF4) | Change | 500 hr | Every 500 hours, MMG45IF4 only; every 250 hours instead if harsh environment or fuel quality questioned | |
| Fuel Filter Elements (Isuzu) | Replace | 500 hr | Every 500 hours (every 250 hours if harsh environment/fuel quality questioned) | |
| Fuel Filter Elements (John Deere) | Replace | 500 hr | 12 mo | |
| Replace Engine Oil | Change | 500 hr | First service — Isuzu, every 500 hours (or every 250 hours if harsh environment/fuel quality questioned) | |
| Replace Fuel Filter Elements | Replace | 500 hr | 12 mo | John Deere engine |
| Replace Oil Vapor Recirculation Filter | Replace | 500 hr | 12 mo | John Deere engine |
| Service Battery | Other | 500 hr | 12 mo | John Deere engine |
| Water Sedimenter Element (Isuzu) | Clean | 500 hr | Every 500 hours (every 250 hours if harsh environment/fuel quality questioned) | |
| Air Cleaner Elements (John Deere) | Replace | 2000 hr | ||
| Air Filter Element (Isuzu) | Replace | 2000 hr | ||
| Alternator and Fan Belts (John Deere) | Replace | 2000 hr | ||
| Check Generator Drive Plate Torque | Check | 2000 hr | Isuzu engine | |
| Lubricate Leveling Jacks | Lubricate | 2000 hr | Isuzu engine | |
| Replace Air Cleaner Elements | Replace | 2000 hr | John Deere engine | |
| Replace Air Filter Element | Replace | 2000 hr | Isuzu engine | |
| Replace Alternator and Fan Belts | Replace | 2000 hr | John Deere engine | |
| Replace Fan Belt | Replace | 2000 hr | Isuzu engine | |
| Test Thermostats | Test | 2000 hr | John Deere engine | |
| Diesel Particulate Filter (DPF) | Other | 3000 hr | Expected service interval at least 3,000-4,500 hours depending on engine power/operating conditions; serviced by authorized provider only | |
| Exhaust Filter (DPF) Service | Other | 3000 hr | Expected service interval at least 3,000-4,500 hours based on engine power/operating conditions; serviced by authorized provider only | |
| Reset Maintenance Alarm Intervals | Other | 3000 hr | Power Zone controller maintenance alarm 3 | |
| Jack Maintenance (lubricate gearing/handle) | Lubricate | 12 mo | Perform annually | |
| Leveling Jacks | Lubricate | 12 mo | Annually | |
| Trailer Wheel Bearings Lubrication | Lubricate | 12 mo | Minimum every 12 months or 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
24| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Air Filter Minder Gauge Replacement Threshold | 20 | in. H2O | |
| Other | Radiator Cap Coolant Fill Clearance | 3/4 | in. | below filler neck (approx 2 cm) |
| Pressure | Loss-of-oil-pressure shutdown verification threshold | 5 | psi (34 kPa) | shut engine down immediately if pressure does not read this value within 5 seconds of restart |
| Pressure | Low Oil Pressure Shutdown Threshold | 20 | psi | |
| Pressure | Maximum trailer tire pressure | 65 | psi | |
| Pressure | Normal Operating Oil Pressure | 35-80 | psi | |
| Pressure | Oil Pressure Gauge Range | 0-100 | psi | |
| Pressure | Oil Pressure Shutdown Confirmation Threshold | 5 | psi | if not attained within 5 seconds of restart, shut engine down immediately |
| Temperature | Coolant Temperature Gauge Range | 150-250 | °F | |
| Temperature | High Coolant Temperature Shutdown Threshold | 230 | °F | |
| Temperature | High coolant temperature shutdown | 230 | °F (110°C) | stop engine immediately at or above this temperature |
| Temperature | Normal Operating Coolant Temperature | 180-200 | °F | average ambient air temperature of 70°F (21°C) |
| Torque | Generator Drive Plate Bolts | 30 | ft-lbs | |
| Torque | Generator Drive Plate Bolts | 40 | ft-lbs | |
| Torque | Generator drive plate bolts - MMG25IF4 | 30 | ft-lbs (40 Nm) | |
| Torque | Generator drive plate bolts - MMG35DF4 | 40 | ft-lbs (54 Nm) | |
| Torque | Generator drive plate bolts - MMG45IF4 | 30 | ft-lbs (40 Nm) | |
| Torque | Generator drive plate bolts - MMG55DF4 | 40 | ft-lbs (54 Nm) | |
| Torque | Trailer wheel lug nuts, first pass | 20-25 | ft-lbs (27-33 Nm) | first pass, star sequence |
| Torque | Trailer wheel lug nuts, second pass | 50-60 | ft-lbs (67-81 Nm) | second pass, star sequence |
| Torque | Trailer wheel lug nuts, third pass | 90-120 | ft-lbs (122-162 Nm) | third pass, star sequence |
| Voltage | Battery Voltage Gauge Range | 0-50 | V | |
| Voltage | Normal Battery Reading | 12-14 | V | 12 volt systems, engine running |
| Voltage | Normal Battery Reading | 24-26 | V | 24 volt systems, engine running |
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 |
|---|---|---|---|---|---|
| Engine oil | John Deere Plus 50 II (John Deere engine) | Refer to OEM engine manual for viscosity grade by season/climate | |||
| Fuel | Ultra-low-sulfur diesel | 379.0 L (100 gal total, 90 gal usable) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
4Checking Generator Drive Plate Torque maintenance
- Disconnect engine starting battery
- Remove generator fan guard
- Tighten each drive plate bolt to specification in Table 4
- Install generator fan guard
- Connect battery
Resetting the Maintenance Alarms maintenance
- With unit shut down, move Control Power switch to ON
- Press any directional arrow to enter maintenance screens
- Press Enter and Stop/Reset simultaneously to open Configuration menu
- Move cursor down to Maintenance group
- Press right arrow to access sections and highlight Maintenance section
- Press right arrow to access parameters and highlight the alarm to reset
- Press Enter to select editable parameter, highlight Reset
- Press Enter to reset the selected alarm
- Repeat for additional alarms
- Press and hold Enter for five seconds to save changes
Towing the Unit - Wheel Lug Torque maintenance
Tools: Torque wrench
- Start all lug nuts by hand.
- First pass: tighten to 20-25 ft-lbs (27-33 Nm).
- Second pass: tighten to 50-60 ft-lbs (67-81 Nm).
- Third pass: tighten to 90-120 ft-lbs (122-162 Nm).
- Re-torque lug nuts in sequence after first road use.
Manual Starting of the Unit operation
⚠ Running engines produce carbon monoxide - asphyxiation hazard
- Move Control Power switch to ON
- Verify controller enters Stop mode/Home screen
- Press Engine Start button in Manual mode
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 MMG35DF4?
The Generac MMG35DF4 is rated 31 kW standby (39.0 kVA).
What engine does the Generac MMG35DF4 use?
The Generac MMG35DF4 is powered by the John Deere 3029HFG03 engine.
What fuel does the Generac MMG35DF4 use?
The Generac MMG35DF4 runs on diesel.
What's the oil capacity on a Generac MMG35DF4?
The John Deere 3029HFG03 engine in the Generac MMG35DF4 has an oil capacity of 10.4 liters.
How much coolant does the Generac MMG35DF4 hold?
The Generac MMG35DF4 cooling system holds 17 liters (4.5 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Generac MMG35DF4?
The Generac MMG35DF4 is rated 29 kW prime (36 kVA), against 31 kW standby.
What is the sound level of the Generac MMG35DF4?
The Generac MMG35DF4 is rated at 68.0 dBA at 7.0 m, per the manufacturer specification sheet.
What is the dry weight of the Generac MMG35DF4?
The Generac MMG35DF4 has a dry weight of 1418 kg (3126 lb).
What size fuel tank does the Generac MMG35DF4 have?
The Generac MMG35DF4 has a 379 liter (100 US gallon) fuel tank, giving about 31 hours of runtime.
What voltage does the Generac MMG35DF4 produce?
The Generac MMG35DF4 is offered in 120 V, 139 V, 208 V, 220 V, 240 V, 277 V, 1 or 3-phase.
What size battery does the Generac MMG35DF4 need?
The Generac MMG35DF4 uses 1 battery, 12V V each, 720 CCA, group 24, per the manufacturer specification sheet.
What alternator does the Generac MMG35DF4 use?
The Generac MMG35DF4 uses a Marathon 284CSL1542 alternator.
What oil filter fits the Generac MMG35DF4?
The Generac MMG35DF4 uses oil filter part number 670570304.
What fuel filter does the Generac MMG35DF4 use?
The Generac MMG35DF4 uses fuel filter part number 010418.
What air filter does the Generac MMG35DF4 use?
The Generac MMG35DF4 uses air filter part number 010419.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Low Fuel Level Shutdown | Fuel level low or unit not sitting level; leaks in fuel tank; fuel level sender or connecting wiring damaged | Check fuel level on the LCD window and verify the unit is sitting level; check for leaks in fuel tank; check the fuel level sender and the connecting wiring for damage and check for continuity between the sender and the engine controller |
| Low Oil Pressure Shutdown | Engine oil level low; oil leaks; loss of oil pressure; oil pressure sender fault | Check engine oil level with the dipstick and add oil if required; visually inspect engine for oil leaks; restart the unit and verify the loss of oil pressure, shutting the engine down immediately if the oil pressure value does not read 5 psi (34 kPa) within five seconds; check oil pressure sender per the troubleshooting section of the engine operator's manual |
| Low Coolant Level Shutdown | Coolant level low; leaks in coolant hoses, engine block or water pump; coolant mixed with engine oil | Allow engine to cool; check coolant level in the radiator and add coolant until it is 3/4 in. (2 cm) below the filler neck, then secure the radiator cap; inspect coolant hoses, engine block and water pump for visible leaks; check engine oil to verify no coolant has mixed with it and see the engine operator's manual |
| High Coolant Temperature Shutdown | Coolant level low | Check coolant level in the overflow jug; restart engine and read the coolant temperature to verify a high coolant temperature shutdown, stopping engine immediately if the coolant temperature is 230°F (110°C) or more; allow engine to cool, add coolant to the overflow jug if it is low and check the level of coolant in the radiator |
| Low fuel level Shutdown | Low fuel level | Check fuel level in LCD window of controller. |
| Low fuel level Shutdown | Unit not level | Confirm that unit is sitting level to ensure an accurate reading. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Generac MMG35DF4 troubleshooting guide (104 entries) →
Repair guides
2Step-by-step procedures compiled from the Generac service manual for this model.
Parts
13| 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 |
| 10000036081 | SEAL | Seal | Amazon eBay | |
| 10000047407 | GASKET, E-STOP | 1 | Gasket | Amazon eBay |
| 10000047443 | GASKET | Gasket | Amazon eBay | |
| 37145B | GASKET | Gasket | Amazon eBay | |
| 37544W | SEAL | Seal | Amazon eBay | |
| 37626B | GASKET | Gasket | Amazon eBay | |
| A0001050172 | GASKET | Gasket | 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 | 100% | 7.8 | 2.1 |
Available documents
This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.