HomeGeneracGenerac MLT4060

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, Kubota and Simson-Maxwell.

9 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.

Air intake

1 required

Fuel system

1 required

Oil system

1 required

Belts

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 kW
Standby kVA13
Prime power8 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

Maintenance & consumables

for the Kubota D1005
ItemSpecCapacityPart #Interval
Air filterMitsubishi / Kubota16444 Amazon $370.99 eBay
Fuel filterKubota D90513515500 hr Amazon eBay
Oil filter76650254301000 hr Amazon $18.01 eBay $22.12 PartsGeek $7.98
Battery12000 hr
BeltMitsubishi103861000 hr Amazon eBay
Coolant4.512000 hr
Coolant filter250 hr
Oil5.11200 hr
Spark plug1000 hr

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 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.

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 13515.

What air filter fits the Generac MLT4060?

The Generac MLT4060 uses air filter part number 16444.

Troubleshooting

6

Symptoms & remedies

SymptomCauseRemedy
Low oil pressure shutdownLow oil levelVerify oil level on dipstick. Add oil, if needed.
Oil leaking from engineVisually inspect the engine for leaks.
Oil 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.
Leakage in coolant hoses, engine block, or water pumpInspect for visible leaks. Verify tension of water pump serpentine drive belt.
Unit cranks, but will not startFuel level lowCheck fuel level in tank. Verify fuel pump operation.

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 (32 entries) →

Parts

124
Part #DescriptionQtySystem
10386Belt, cold weather - Mitsu 6KW & 8 KW1Belt Amazon eBay
11042Gasket, exhaust manifold1Gasket eBay
11199Seal, axle bearing2Seal Amazon eBay $289.99
11337Generator O-ring1Seal eBay
11366Solenoid, starter Mitsu1Starter eBay $211.09
11456Gasket, lens1Gasket eBay
11628Kubota D905 V-belt1Belt Amazon $144.49 eBay
12213Mitsubishi, gasket, water pump1Gasket eBay
12214Mitsubishi, gasket, thermostat1Gasket eBay FridayParts $325.45
12227Hose, oil drain .375 X 20, 30R71Hose Amazon eBay
12329Marathon 6KW pancake bearing seal1Seal eBay
12350Hose, radiator lower1Hose Amazon eBay
12486Alternator1Alternator eBay
1280046-02 | 67, 1 | 35B63-01200 63 99 17 04300, 05 9 131Gasket Amazon eBay $1170.53 FridayParts $26.86
12889Gasket, oil drain1Gasket eBay
12959Mitsubishi, gasket, intake manifold L3E1Gasket eBay
132-0375Sea Water Pump Impeller kit w/cover & gasketImpeller Amazon eBay FridayParts $26.00
132-0379Sea Water Pump ImpellerImpeller Amazon eBay $29.95
13278Fuel pump, electric1Pump Amazon eBay
13373Gasket, lens oval1Gasket eBay
13481Kubota fuel filter assembly, D9051Fuel filter eBay
13515Filter, fuel element, Kubota1Filter Amazon eBay
13876Kit, heater - fuel filter1Fuel filter Amazon eBay
14099Switch, coolant temperature1Sensor eBay
149-2106Fuel Filter Element1Fuel filter Amazon $15.99 eBay $34.99 KuduParts $68.00
15146Filter, oil1Oil filter eBay
15375Sensor, Oil Pressure1Sensor Amazon eBay
16443Filter, air with bracket1Air filter Amazon eBay
16444Element, air filter1Air filter Amazon $370.99 eBay
16589Hose, air cleaner1Hose eBay
16677Switch, oil pressure1Sensor eBay $22.99 FridayParts $83.99
16678Switch, coolant temperature1Sensor eBay $60.01
16685Fuel filter head, element & fitting1Fuel filter eBay KuduParts $38.00
16686Element, fuel filter1Fuel filter eBay
16687Hose, radiator upper1Hose Amazon eBay KuduParts $63.00
16688Hose, radiator lower1Hose Amazon eBay
16691Filter, oil1Oil filter Amazon $42.50 eBay
16692V-belt, alternator1Belt eBay $20.59 FridayParts $20.59
16693Glow plug, engine3Glow plug eBay
16743Alternator, Mitsubishi1Alternator eBay $221.31 FridayParts $135.98
16744Water pump, Mitsubishi1Pump Amazon eBay eBay
16745Thermostat, Mitsubishi1Thermostat eBay
16769Lens, gasket1Gasket eBay
185-5421Plug, Glow4Glow plug Amazon eBay $35.00
185-5835Filter, Oil1Oil filter Amazon $33.27 eBay $21.78 FridayParts $20.19
185-6934V-BeltBelt Amazon $108.61 eBay $70.52
185-7268Glow Plug (24 Volt)Glow plug Amazon eBay
300-1500Fuel Filter1Fuel filter Amazon eBay $36.60
323-1544Thermostat1Thermostat Amazon eBay
324-1491Oil Filter1Oil filter Amazon eBay
324-1542Fuel Injection Pump1Pump Amazon eBay
50051HOSE, FUEL - .375 ID 50 PSI SAE 30R73 ft.Hose Amazon eBay
612-6673Water Pump1Pump Amazon eBay
65649Heater, engine - low rad hose1Hose 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
11166Transformer, metal halide1Service part / kit eBay
11167Transformer, sodium light1Service part / kit eBay
11253Cap, grease - axis with rubber plug 3500#2Service part / kit Amazon eBay $15.00
11254Plug, grease cap - for zerk (Axis)2Service part / kit Amazon eBay $296.58
11275Decal, Magnum logo w/ web - red vinyl1Service part / kit Amazon eBay $79.95
11277U-bolt, axle4Service part / kit Amazon eBay $379.05
11278Tie plate, spring2Service part / kit Amazon eBay $324.50 FridayParts $5489.60
11279Nut, locking8Service part / kit Amazon eBay
11280Spring, axle2Service part / kit Amazon eBay
11391Bulb, 1000W MH short length1Service part / kit Amazon eBay
11465Bulb - 1000W HPS short length1Service part / kit eBay
11555BWeldment, removable tongue - 74"1Service part / kit Amazon eBay
12080Cap, fuel tank - vented, 3.5 dia. grn diesel only1Service part / kit Amazon eBay FridayParts $39.99
12137Cap, fuel tank - vent 3.5 dia grn1Service part / kit eBay $40.99
12141Decal set, LT eng/safety 4-lang1Service part / kit Amazon eBay $13.60
12159Capacitor, 25 uF Marathon 6KW (201CSA5411)1Service part / kit eBay
12207Axle, 3500 lb. 56SC 68.5TC1Service part / kit Amazon eBay $129.53
12262Decal, 4000/5000 set up 4-lang (MW)1Service part / kit Amazon eBay $61.69
12328Marathon 6KW pancake bearing1Service part / kit eBay $164.99 KuduParts $21.00
12880Decal, instruction 4000/5000 4-lang (EW) not shown1Service part / kit Amazon eBay
12881Decal, instruction 3000 4-lang (EW)1Service part / kit Amazon eBay FridayParts $129.99
130-4434Zinc Pencil1Service part / kit Amazon $48.66 eBay $34.17
13018Solenoid, fuel shutdown (2 wire)1Service part / kit Amazon eBay
13369Lens, glass oval1Service part / kit eBay
13381Socket, bulb1Service part / kit eBay $62.63
13500Fuel, pick-up tube - 14.00 in.1Service part / kit eBay FridayParts $210.68
14201Relay, auto shutdown1Service part / kit Amazon eBay
14217Bulb, metal halide1Service part / kit eBay
14679Capacitor, metal halide1Service part / kit eBay
14730Socket, light1Service part / kit eBay
14782Capacitor, sodium light1Service part / kit eBay
14783Ignitor, sodium light1Service part / kit eBay
14784Bulb, high pressure sodium1Service part / kit eBay KuduParts $20.00
15492Suppressor1Service part / kit eBay $244.45
15493Diode, rotor2Service part / kit eBay
15540Wheel, P205X75R15 radial w/rim2Service part / kit Amazon eBay $14.36
15546Oil heater, pan - magnetic1Service part / kit Amazon eBay
15547Blanket, battery for 24 series1Service part / kit Amazon eBay $14.97
15695Capacitor, 45uF Marathon1Service part / kit eBay
15798Capacitor, 50uF, 440VAC, 50/60 Hz, roundService part / kit eBay FridayParts $69.37
16134Bearing, 6 kW1Service part / kit eBay
16683Solenoid, fuel shut-down1Service part / kit eBay $137.25 KuduParts $33.00
185-6721Breather Filter Element1Service part / kit Amazon eBay
18556Regulator, voltage - SE 3501Service part / kit Amazon eBay FridayParts $158.99
19219Cap, pressure radiator1Service part / kit Amazon eBay
201CSA5411Marathon Electric Brushless generator, Insulation Class F1Service part / kit eBay
209649Form: SFC626B1Service part / kit Amazon eBay
36431SERVICE LOGService part / kit Amazon eBay
40954Bearing, axle (inner)2Service part / kit Amazon eBay
60096Lug Nut, .500-20 (incl. w/axle)10Service part / kit Amazon eBay $28.98
60674Wheel stud, axle10Service part / kit Amazon eBay $26.25
60766Valve, drain 18mm-1.5 w/nipple1Service part / kit Amazon eBay
60774Valve, drain 22MM-1.5 w/nipple1Service part / kit eBay
65326Charger, battery - 2 amp, 3 stage1Service 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
G3907-8824-0Service part / kit Amazon
J110-STDService part / kit Amazon
J116-STDService part / kit Amazon
J119-SAService part / kit Amazon
J119-STDService part / kit Amazon
J320-STDService part / kit Amazon
J324-STDService part / kit Amazon
MILT3060240 VAC 50 Amp Twistlock Outlets1Service part / kit Amazon eBay
MIT3080240 VAC 30 Amp Twistlock Outlets1Service part / kit Amazon eBay $319.99
S0310Service part / kit Amazon
S0315Service part / kit Amazon
S0520Service part / kit Amazon

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)Owner's manual (Generac)Owner's manual — 10000045518 (Generac)Owner's manual — 10454 (Generac)Owner's manual — 33298 (Generac)
Full service, cheapest listings

Priced items from this model's own parts manual.

Air filter 16444$370.99
Oil filter 7665025430$7.98
2 priced items$378.97