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Generac MLT4060 Generator Set

The Generac MLT4060 is a 9.8 kW (13.1 kVA) Diesel standby generator set powered by a Kubota D1005 engine. It is available at 120/240 V, 1Ø, 60 Hz and rated 20 A. It holds about 5.1 L (1.3 gal) of oil and 4.5 L (1.2 gal) of coolant, with a maximum ambient rating of 49 °C. Starting uses 1 group-24 battery rated 440 CCA at 12 V. The set measures 2870×2600×7520 mm (113.0×102.4×296.1 in), weighs about 943 kg (2079 lb) and produces 68 dBA at 7 m. An integrated tank holds 213.5 L (56.4 gal), roughly 85 hours of runtime. The same D1005 engine also powers generator sets from Cummins/Onan and Simson-Maxwell.

9.8 kW
Standby
1.001 L
Displacement
5.1 L
Oil capacity
3
Document types

How to read your Generac serial & model number →

Typical fuel consumption for 5–10 kW Diesel generators →

Compare with other 5–10 kW Diesel generators →

Service parts for the MLT4060

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required
33192Fuel filter$24.95eBay

Oil system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power9.8 kW
Standby kVA13
Prime power8.7 kW
EmissionsTier 4 Final
ControllerAnalog controls, Power Zone (if equipped), Power Zone Plus, Power Zone Plus (if equipped), Standard Analog
Oil capacity5.1 L
AlternatorMarathon 201CSA5411 (Class F insulation)
Voltage options120/240 V
Phase1
Rated current20 A
Power factor1
Circuit breaker30 A
Battery group24
Battery cranking440 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity4.5 L
Max ambient49 °C
Dimensions (L×W×H)2870×2600×7520 mm
Dry weight943 kg
Wet weight1126 kg
Sound level68.0 dBA @ 7 m
Fuel tank213.5 L
Tank runtime85 hr

Engine

Kubota D1005
Oil capacity4.25 L
Coolant capacity3.78 L
Displacement1.001 L
AspirationDiesel
Rated speed1800 rpm

Filters for the Kubota D1005

4

Engine-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.

SystemFilterDescriptionCross-references
Oil filterP550162Lube Filter, Spin-On Full FlowKUBOTA 1524132040, KUBOTA 1542132090, NAPA 1301, NAPA 1334 FridayParts $10.50
Oil filterP550227Lube Filter, Spin-On Full FlowKUBOTA 1521332430, KUBOTA 6602136060, LPM 00013505345, WALGAHN-MOTORENTECHN 00811292 KuduParts $18.00 FridayParts $20.25

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Fuel filterP550012Fuel Filter, In-LineKUBOTA 1258143010, KUBOTA 1258143011, BALDWIN BF840-K1, RENAULT VI 0005490862 KuduParts $13.00 FridayParts $15.50
Fuel / water separatorP551039Fuel Filter, Water Separator Spin-On Twist&DrainNAPA 3192, BALDWIN BF1257, CLUB CAR 102614001, CLUB CAR 102703401 FridayParts $25.40 KuduParts $97.00

Same engine, other brands

2 brands

The Kubota D1005 in this set also powers 2 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
Cummins/OnanMDKAL
Simson-MaxwellSKW8 T6-T4

Maintenance & consumables

for the Kubota D1005
ItemSpecCapacityPart #Interval
Air filter—365 hr
Fuel filter33192500 hr Amazon eBay $24.95 NAPA $27.99
Oil filter76650254301000 hr Amazon eBay $22.12 PartsGeek $7.98 NAPA $13.30
Battery—100 hr
Belt—1000 hr
Coolant3.78—800 hr
Coolant filter—
Oil4.25—1000 hr
Spark plug—1000 hr

Compatible filters for the Kubota D1005 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Kubota RG64842831 Kubota RG15842930 Kubota R141142289 Donaldson P628324 Donaldson P629467

Service intervals

21
ItemActionHoursMonthsNotes
Coolant levelCheck8 hrDaily or before use
Electrical connectionsCheck8 hrDaily or before use
Fuel levelCheck8 hrDaily or before use
Oil levelCheck8 hrDaily or before use
Tire pressureCheck8 hrDaily or before use
Engine bolts and nutsAdjust50 hrFirst service — Initial 50 hours
Engine oil and oil filterChange50 hrFirst service — Change after the initial 50 hours of operation, then at the appropriate regularly scheduled interval thereafter
Engine oil and oil filterReplace50 hrFirst service — Initial 50 hours, then yearly or 100 hours
Replace engine oil and oil filterChange50 hrFirst service — Mitsubishi engine, after initial 50 hours, then at regular interval thereafter
Air cleanerCheck250 hrInspect
Fuel filterReplace250 hr
Belt and belt tensionInspect400 hrInspect and adjust
Fuel tankDrain400 hrDrain water from fuel tank
Glow plugsCheck500 hrDiesel engines
Leveling jacksLubricate750 hr
Air cleaner elementReplace12 moReplace yearly, or after six cleanings, whichever occurs first (Mitsubishi engine guide)
Jack Maintenance (lubricate gearing/handle)Lubricate12 moPerform at least annually
Replace air cleaner elementReplace12 moKubota engine: yearly, or after six cleanings, whichever occurs first
Trailer Wheel Bearings LubricationLubricate12 moMinimum every 12 months or 12,000 miles (19,312 km)
Trailer wheel bearingsLubricate12 moMinimum recommended lubrication is every 12 months or 12,000 miles (19,312 km)
Winch brake assemblyClean6 moClean and grease brake assembly per winch preventive maintenance schedule (semi-annually)

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

10
TypeItemValueUnitCondition
PressureEngine oil pressure, normal operating35-80psi (241-552 kPa)engine running
TemperatureEngine coolant temperature, normal operating100-230°F (38-110°C)engine running
TemperatureHigh Coolant Temperature Shutdown Threshold210°F99°C
TorqueWheel lug nuts, first pass20-25ft-lb (27-33 Nm)first pass
TorqueWheel lug nuts, second pass50-60ft-lb (67-81 Nm)second pass
TorqueWheel lug nuts, third pass90-120ft-lb (122-162 Nm)third pass
VoltageEngine/DC battery voltage (VBAT)13.5-15V12-volt system, engine running
VoltageGFCI Outlet / Ballast Supply Voltage120 ±5V
VoltageTransformer Stabilized Voltage240-260VACafter strike, drops then rises and stabilizes
VoltageTransformer Strike Voltageapproximately 400VACwhen bulb strikes/induces an arc

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

FluidGradeStandardAmbientCapacityNotes
Coolant50% glycol, 50% waterbelow 49°CStandard mixture; 60/40 and heated options available for cold weather
Coolant50% glycol, 50% water or 60% glycol, 40% waterbelow 49°CLiquid cooled engines with standard 50/50 mixture or optional cold-weather 60/40 configuration
Coolant50/50 glycol/water or 60/40below 49°CLiquid cooled diesel engines
Coolant40% water / 60% antifreezeabove -36°CFreezing point -34°F (-36°C); maximum freeze protection is 60% antifreeze
Coolant50% water / 50% antifreezeabove -24°CFreezing point -12°F (-24°C); mix demineralized/distilled water with coolant, not hard water
Engine oilSAE 0W-20 Syntheticbelow -18°CFor use below -0°F / -18°C
Engine oilSAE 10WFrom engine oil viscosity chart decal
Engine oilSAE 15W-40From engine oil viscosity chart decal
Engine oilSAE 30WFrom engine oil viscosity chart decal
Engine oilSAE 40WFrom engine oil viscosity chart decal
FuelNo. 2D diesel (above freezing) / No. 1D diesel (at or below freezing); climatized 1D/2D mix also usable in some areasUltra-low-sulfur diesel onlyDo NOT use home heating oil or bio-diesel fuel
FuelUltra-low-sulfur diesel No. 1D or No. 2DNo. 1D when at or below freezing; No. 2D when above freezing; climatized fuel acceptable
FuelUltra-low-sulfur diesel; No. 1D below freezing, No. 2D above freezing (climatized 1D/2D blend acceptable in some areas)216.0 LDO NOT use home heating oil or bio-diesel fuel

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

9
Jack Maintenance maintenance
  1. Apply automotive grease to internal gearing via jack cover or grease fitting near crank (side-wind models)
  2. Rotate jack handle to distribute grease evenly
  3. Apply lightweight oil to handle unit at both sides of tube (side-wind models)
  4. Lubricate caster wheel axle bolt/nut assembly with lightweight oil if equipped
  5. Apply lightweight oil to screw stem (top-wind models)
RPM Quick Drain maintenance

Tools: RPM Quick Drain system hardware

  1. Convenient - no need to reach under machines
  2. Purges and extracts from the sump
  3. Evacuates sump directly to final containment via zero leak quick disconnect
  4. No spills, dripping filters, drain pans or intermediate containers needed
  5. Completes engine oil and filter change in less than 10 minutes
Trailer Wheel Bearing Lubrication maintenance

Tools: Grease gun

  1. Remove small rubber plug on grease cap
  2. Attach standard grease gun fitting to grease zerk fitting
  3. Pump grease until new grease is visible around gun nozzle
  4. Wipe excess grease from hub with clean cloth
  5. Replace rubber plug
Winch Preventive Maintenance maintenance

⚠ Replace cable immediately if damaged

⚠ Replace brake if slippage detected

  1. Check winch is free of dirt, oil, grease, water, and foreign substances
  2. Ensure all mounting bolts tightened to recommended torque values
  3. Check connections are securely tightened and free of corrosion
  4. Inspect cable for damage: cuts, knots, crushed or frayed portions, broken strands
  5. Check brake for slippage or drift by visual inspection when winch is under load
Raising the Mast operation

⚠ Do not extend mast beyond the colored mark on the second mast section

⚠ Stop immediately if the mast hangs up or winch cable develops slack

  1. Set up and level the unit
  2. Check both sets of mast cables for wear or damage; verify centered in pulleys
  3. Press and hold winch control toggle switch upward to telescope mast to desired height
  4. Rotate mast by loosening rotation knob, aim lights, then tighten knob
Shutting Down the Unit - Standard Controls operation
  1. Remove all loads from the outlets
  2. Switch individual circuit breakers for each light OFF (O)
  3. Switch the main circuit breaker OFF (O)
  4. Move the control power switch to STOP
Starting the Engine - Analog Controls operation

⚠ Do not continuously crank engine for more than ten seconds

⚠ Never start the engine with circuit breakers switched on

  1. Verify main circuit breaker and individual light breakers are OFF (O)
  2. Turn key to GLOW PLUG position, hold 10-15 seconds until glow plug indicator turns red
  3. Turn key to START position, hold until engine cranks and starts
  4. Release key; it moves to RUN position
  5. Allow engine to reach normal operating temperature before switching on loads
Towing the Unit operation

⚠ Maximum highway towing speed 55 mph (88.5 km/h); off-road 10 mph (16 km/h) or less

Tools: grease gun

  1. Raise rear jack and release locking pin into travel position
  2. Raise outrigger jacks and slide outriggers into frame until locking pins snap
  3. Use tongue jack to raise/lower trailer onto hitch; lock coupling and attach safety chains
  4. Lubricate grease fittings on leveling jacks
  5. Connect trailer wiring to tow vehicle and check lights
  6. Check wheel lugs; tighten in sequence to specification if removed
  7. Check tire inflation
Lowering the Mast Manually repair

⚠ Continuous use of this procedure could damage the planetary gear brake of the winch

Tools: 3/8 in. hex-wrench

  1. Remove power cables from the two terminals on the winch motor assembly
  2. Remove two flange head screws securing winch motor assembly, retain for reassembly
  3. Carefully remove the motor assembly, keeping the two pieces together
  4. Insert a 3/8 in. hex-wrench into the sleeve bearing
  5. Rotate the wrench counter-clockwise to lower the mast, stopping if slack develops
  6. Install the winch motor assembly and secure with screws once mast is fully down

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

How many kW is the Generac MLT4060?

The Generac MLT4060 is rated 9.8 kW standby (13.1 kVA).

What engine does the Generac MLT4060 use?

The Generac MLT4060 is powered by the Kubota D1005 engine.

What fuel does the Generac MLT4060 use?

The Generac MLT4060 runs on Diesel.

What is the oil capacity of the Generac MLT4060?

The Kubota D1005 engine in the Generac MLT4060 has an oil capacity of 4.25 liters.

How much coolant does the Generac MLT4060 hold?

The Generac MLT4060 cooling system holds 4.5 liters (1.2 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the prime power rating of the Generac MLT4060?

The Generac MLT4060 is rated 8.7 kW prime (8 kVA), against 9.8 kW standby.

What is the sound level of the Generac MLT4060?

The Generac MLT4060 is rated at 68.0 dBA at 7 m, per the manufacturer specification sheet.

How much does the Generac MLT4060 weigh?

The Generac MLT4060 has a dry weight of 943 kg (2078 lb).

What size fuel tank does the Generac MLT4060 have?

The Generac MLT4060 has a 213.5 liter (56 US gallon) fuel tank, giving about 85 hours of runtime.

What voltages is the Generac MLT4060 available in?

The Generac MLT4060 is offered in 120/240 V, 1-phase.

What battery does the Generac MLT4060 use?

The Generac MLT4060 uses 1 battery, 12 V each, 440 CCA, group 24, per the manufacturer specification sheet.

What alternator does the Generac MLT4060 use?

The Generac MLT4060 uses a Marathon 201CSA5411 alternator. Insulation class F.

What oil filter fits the Generac MLT4060?

The Generac MLT4060 uses oil filter part number 7665025430.

Which fuel filter part number does the Generac MLT4060 take?

The Generac MLT4060 uses fuel filter part number 33192.

What air filter fits the Generac MLT4060?

The Generac MLT4060 uses air filter part numbers KUBOTA RG64842831, KUBOTA RG15842930.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
Low oil pressure shutdownLow oil levelVerify oil level on dipstick. Add oil, if needed.
Low oil pressure shutdownOil leaking from engineVisually inspect the engine for leaks.
Low oil pressure shutdownOil pressure switch failureRefer to OEM engine operator's manual to identify corrective action.
High coolant temperature shutdownLow coolant levelAdd coolant if needed. Allow engine to cool, then check coolant level in radiator. Restart engine and check coolant temperature. Stop engine immediately if coolant temperature is 210°F (99°C) or more.
High coolant temperature shutdownBlockage in radiatorInspect radiator shroud and ducting for blockage and remove any foreign matter.
High coolant temperature shutdownLeakage in coolant hoses, engine block, or water pumpInspect for visible leaks. Verify tension of water pump serpentine drive belt. Remove load on generator and restart engine. Verify coolant temperature and shut engine down immediately if it starts to overheat. Refer to the OEM engine operator's manual for additional information on engine overheating.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Generac MLT4060 troubleshooting guide (57 entries) →

Parts

109
Part #DescriptionQtySystem
132-0358Pump, Water1Pump eBay FridayParts $245.00
132-0361Seal, Lip1Seal eBay
132-0366Seal, Mechanical1Seal eBay
132-0369Seat, Seal1Seal eBay
132-0372O'Ring2Seal eBay
132-0375Impeller1Impeller Amazon eBay FridayParts $26.00
132-0379Kit, Minor Service (Includes Parts Marked *)1Impeller Amazon eBay $29.95
149-1908-05Separator, Fuel/Water1Fuel filter Amazon eBay
149-1914-01Element (Includes Seals)1Fuel filter Amazon eBay FridayParts $42.99
149-1953Drain Assy (Includes Knob and Seal)1Seal Amazon eBay
149-2045O-Ring Kit (Includes Seal and Plunger)1Seal Amazon eBay
149-2047Pump Assy (Includes Plunger, Retainer, Shaft, Check Ball, Knob and Screw)1Pump Amazon eBay
149-2100Filter Assembly, Fuel Element. Filter1Fuel filter Amazon eBay
149-2106Element1Fuel filter Amazon eBay $34.99 NAPA $61.61 KuduParts $68.00
149-2331-01Pump, Fuel (E5)1Pump Amazon eBay $85.00 FridayParts $87.50
155-3216Kit, Water Separator1Fuel filter eBay
185-2284Gasket2Gasket Amazon eBay
185-5337Gasket2Gasket Amazon eBay
185-5421Plug, Glow2Glow plug Amazon eBay $35.00
185-5458Thermostat1Thermostat Amazon eBay
185-5641Gasket, Delivery Valve2Gasket Amazon eBay
185-5643O'Ring2Seal Amazon eBay
185-5714Seal Assy, Mechanical1Seal Amazon eBay
185-5782Holder Assy, Brush (Includes Brushes and Springs)1Brush eBay
185-5783Brush2Brush eBay
185-5784Spring, Brush2Brush eBay
185-5791Regulator1Avr eBay
185-5835Filter, Oil1Oil filter Amazon eBay $21.78 NAPA $3.59 FridayParts $20.19
185-5985Seal, Heat3Seal Amazon eBay
185-6004Gasket, Thermostat1Gasket Amazon eBay
185-6005Thermostat1Thermostat Amazon eBay
185-6510Seal, Oil1Seal Amazon eBay
185-6579Gasket, Water Pump1Gasket Amazon eBay $24.69
185-6580Gasket, Hole Cover1Gasket Amazon eBay
185-6603Gasket1Gasket Amazon eBay
185-6671Pump Assy, Water (Includes Parts Marked *)1Pump Amazon eBay $145.00 FridayParts $42.60
185-6674Impeller, Water Pump1Impeller Amazon eBay
185-6676Gasket, Water Pump1Gasket eBay
185-6684Seal, Valve Stem6Seal eBay
185-6740Holder Assy, Nozzle3Injector Amazon eBay
185-6820Regulator1Avr eBay
185-6853Gasket1Gasket eBay
185-6862Gasket, Cylinder Head1Gasket eBay
185-6863Gasket, Gearcase1Gasket Amazon eBay
185-6864Seal, Oil1Seal Amazon eBay
185-6868Gasket, Cylinder Head Cover1Gasket Amazon eBay
185-6869Gasket, Bearing Case1Gasket eBay
185-6871Gasket, Bearing Case Cover1Gasket eBay
185-6884Plunger, Pump3Pump Amazon eBay
185-6894Gasket1Gasket Amazon eBay
185-6922Gasket, Water Flange1Gasket Amazon eBay
185-6925Gasket, Exhaust Manifold1Gasket eBay
185-6926Gasket1Gasket eBay
185-6934Belt, Fan (37.5")1Belt Amazon eBay $70.52
185-710724V Glow Plugs3Glow plug Amazon eBay
185-7214Gasket, Oil Pan1Gasket eBay
185-7242Gasket Thermostat1Gasket Amazon eBay
185-7268Glow Plug (24 Volt)3Glow plug Amazon eBay
185-7299Gasket, Water Pump1Gasket Amazon eBay
185-7300Seal, Valve Stem6Seal Amazon eBay
185-7373Gasket, Cylinder Head1Gasket eBay
191-2095Regulator, Voltage (Spec A)1Avr eBay
193-0244Sender, Oil Pressure (E1)1Sensor Amazon eBay
193-0318Sender, Water Temperature1Sensor Amazon eBay $73.95
193-0430-01Sender, Oil Pressure1Sensor Amazon eBay $339.95
193-0457-01Sender, Water Temperature (E2)1Sensor eBay
193-0468Sender, Low Coolant1Sensor Amazon eBay
300-1500Fuel Filter1Fuel filter Amazon
305-0896Regulator, Voltage (AVR)1Avr eBay FridayParts $3390.89
309-0295Switch, Temperature (E086) (S5)1Sensor eBay
309-0576Switch, Thermostat - High Engine Coolant Temperature (S2)1Sensor Amazon eBay
309-0601Thermostat, Open at 202°F1Sensor Amazon eBay
309-0641-03Switch, Oil Pressure (Closes at 14 lbs. Descending) (S1)1Sensor Amazon eBay
309-0641-05Switch, Oil Pressure (S4)1Sensor Amazon eBay
323-1544Thermostat1Thermostat Amazon eBay
324-1491Oil Filter1Oil filter Amazon eBay
324-1542Fuel Injection Pump1Pump Amazon eBay
501-0624Hose, Oil Drain1Hose eBay
503-1353Hose, Exhaust (2" x 10')1Hose eBay
503-1692Hose (5/16 I.D. x 120" Lg.)1Hose eBay
503-1963-04Hose, Exhaust (2" x 3')1Hose eBay
503-1963-05Hose, Exhaust (2" x 5')1Hose eBay
503-2047Hose, Coolant1Hose eBay
503-2049Hose, Coolant1Hose eBay
503-2050Hose, Coolant1Hose eBay
503-2070Hose, Breather1Hose eBay
503-2072-01Hose, Air Intake1Hose eBay
503-2086Hose, Coolant1Hose eBay
503-2096Hose, Coolant1Hose eBay
612-6673Water Pump1Pump Amazon eBay
90243Air Filter ElementAir filter Amazon eBay
M1679-2TWO F U E L LINES IN TANK FITTINGFuel line Amazon eBay
02076Unit ID Tag, Vin TagService part / kit Amazon eBay
100-3478-02Cruise Kit2Service part / kit Amazon eBay
130-4434Pencil, Zinc1Service part / kit Amazon eBay $34.17 NAPA $23.21
132-0374Plate, Wear1Service part / kit eBay
132-0380Kit, Major Service (Includes Parts Marked +)1Service part / kit eBay
149-2046Kit, Metal Bowl Replacement (Includes Plug, O-Rings and Drain Assy)1Service part / kit Amazon eBay
155-1002Strainer, Water Pickup1Service part / kit Amazon eBay
155-3218Separator, Water (2")1Service part / kit eBay
185-5649Tappet3Service part / kit eBay
185-6638Rectifier1Service part / kit eBay
185-6721Element, Breather1Service part / kit Amazon eBay
185-6816Rectifier1Service part / kit eBay
209649Form: SFC626B1Service part / kit Amazon eBay
307-2546Solenoid, Stop (K7) (12V)1Service part / kit eBay $34.03
307-2546-01Solenoid, Stop (K7) (24V)1Service part / kit eBay FridayParts $69.99
321-0307-06Fuse (15A, Lt Blue)1Service part / kit eBay
CS1312-1CROSS-SECTION VIEW HULL STRAINER SEA COCK RECOMMENDED WATER STRAINER OR FILTER FLUSH THROUGH-HULL FITTING TO GENSETService part / kit Amazon Amazon eBay 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

RatingLoadL/hgal/h
Continuous1.140.301
Continuous100%2.230.59
Prime100%2.230.59
Standby1.140.301
Standby100%2.230.59

Available documents

Spec sheet (Generac)Reference (Generac)Reference — magnum 6 kw 8 kw 15 kw 20 kw standard (industrialengines.ca)Owner's manual (Generac)Owner's manual — 10000045518 (Generac)Owner's manual — 10454 (Generac)Owner's manual — 33298 (Generac)Parts manual — A0001521579 (Generac)Parts manual — mlt4060-80mkv-led-parts-manual (Generac)

This page was generated from the 9 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Fuel filter 33192$24.95
Oil filter 7665025430$7.98
2 priced items$32.93