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Kubota D1005-E3BG1-MGM-1 Engine

Name: Kubota D1005-E3BG1-MGM-1 Engine
Brand: Kubota

The Kubota D1005-E3BG1-MGM-1 is a 1 L 3-cylinder naturally aspirated engine rated at 1800 rpm, producing up to 7.5 kW. It powers generator sets from Generac and Magnum, including the MLG6K, MLT3060K, MLT4060DOTK and MLT3060. It holds 5.1 L (1.3 gal) of oil and 4.5 L (1.2 gal) of coolant.

Also known as: Kubota D1005-E3BG1-MGM-1

1.0 L

Displacement

Cylinders

1800 rpm

Rated speed

7 kW

Gross power

On this pageService parts Specs Generator sets Maintenance Filter cross-reference FAQ Service intervals Torque & specs Fluids Procedures Wiring

Service parts for the D1005-E3BG1-MGM-1

The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.

Air intake

1 required

RG64842831Air filtersee priceAmazon

Fuel system

1 required

P551039Fuel filterfind

Oil system

1 required

7665025430Oil filter$7.98PartsGeek

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

Engine specifications

Oil capacity	5.1 L
Coolant capacity	4.5 L
Displacement	1.0 L
Cylinders	3
Aspiration	naturally aspirated
Rated speed	1800 rpm
Gross power	7 kW

Generator sets powered by this engine

Shared across brands: Generac, Magnum

Generac MLG6K Generac MLT3060K Generac MLT4060DOTK Magnum MLT3060 Magnum MLT4060

How to read your Kubota engine serial & model number →

Common problems

Mast Lights On But the Light Output is Low
Cause: Fixture and/or lens is dirty. Lamp worn due to normal use. Damaged or loose electrical connections. Generator output incorrect. Low transformer output
Fix: Clean reflective surface inside fixture and both inside and outside surface of glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the glass. Replace lamp. Check the mast coil cord, mast junction box and mast light connections.
Mast lights off but ballast indicators on control panel are on
Cause: 1. Mast light is too hot. Allow light to cool 10-15 minutes before restarting. 2. Faulty bulb connection. Check that the bulb is tight in the socket. 3. Bulb broken. Check for broken arc tube or outer bulb jacket, broken or loose components in bulb envelope or blackening/deposits inside tube. 4. Check the connections inside the mast junction box and each mast light housing/socket. 5. Check the mast electrical cord for damage and check the cord connections inside the control box.
Mast lights off and ballast indicators on control panel are off
Cause: 1. Check the connections inside the control box and inside each ballast box. 2. Generator output incorrect. Check the incoming voltage to the ballast by checking the available voltage on the duplex receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed may need to be adjusted or generator may require service. 3. Low transformer output. The voltage from the transformer should read approximately 400 VAC as the light “strikes” (induces an arc), then drop and slowly rise back up to stabilize at 240-260 VAC. On quick disconnect models, measure across the junction box terminals when the light is unplugged. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced.
Mast lights on but the light output is low.
Fix: 1. Fixture or lens are dirty. Clean reflective surface inside fixture and both inside and outside surface of glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the glass. 2. Bulb worn due to normal use. Replace bulb. 3. Check the mast coil cord, mast junction box and mast light connections. 4. Generator output incorrect. Check the incoming voltage to the ballast. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, engine speed may need to be adjusted or generator may require service. 5. Low transformer output. The voltage from the transformer should
Mast lights off and ballast indicators on control panel are off.
Fix: 1. Check the connections inside the control box and inside each ballast box. 2. Generator output incorrect. Check the incoming voltage to the ballast by checking the available voltage on the duplex receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed may need to be adjusted or generator may require service. 3. Low transformer output. The voltage from the transformer should read approximately 400VAC as the light 'strikes' (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick disconnect models, measure across the junction box terminals when the light is unplugged. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced.
Mast light is too hot.
Fix: Allow light to cool 10-15 minutes before restarting.
Faulty bulb connection.
Fix: Check that the bulb is tight in the socket.
Bulb broken.
Fix: Check for broken arc tube or outer bulb jacket, broken or loose components in bulb envelope or blackening/deposits inside tube.
High coolant temperature shutdown
Cause: Low coolant level
Fix: Add 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.
Mast Lights Off, but Ballast Indicators on Control Panel are On.
Cause: Light fixture is too hot. Faulty lamp connection. Lamp broken
Fix: Allow light to cool 10-15 minutes before restarting. Check that the lamp is tight in the socket. Check for broken arc tube or outer lamp jacket, broken or loose components in lamp envelope, or blackening/deposits inside tube.
Mast Lights Off, and Ballast Indicators on the Control Panel are Off.
Cause: Loose lighting connections. Generator output incorrect. Low transformer output
Fix: Check the connections inside the control box and inside each ballast box. Check the incoming voltage to the ballast by checking the available voltage on the GFCI receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed may need to be adjusted or generator may require service.
Unit cranks, but will not start
Cause: Fuel level low
Fix: Check fuel level in tank. Verify fuel pump operation.
Restricted air filter
Fix: Inspect air filter for blockage.
Oil pressure switch failure
Fix: Refer to OEM engine operator’s manual to identify corrective action.
Oil leaking from engine
Cause: Visually inspect the engine for leaks.

Compiled from service & troubleshooting documentation across every generator set that uses the Kubota D1005-E3BG1-MGM-1.

Maintenance schedule

Item	Spec	Part #	Interval
Air filter	Replace the air filter element yearly, or after six cleanings, whichever occurs first.	—	365 hr
Fuel filter		33192	500 hr	Amazon eBay $24.95
Oil filter		7665025430	1000 hr	Amazon $18.01 eBay $22.12 PartsGeek $7.98
Battery	Disconnect the negative (–) terminal on the battery before servicing. Attach a “Do Not Start” sign to the control panel.	—	24 hr
Belt		—	1000 hr
Coolant	Check coolant level daily by inspecting the level in coolant overflow jug located near the radiator. Refer to the engine operator’s manual for coolant recommendations and proper mixture.	—	24 hr
Oil		—	1000 hr
Spark plug	Replace spark plugs as needed. Refer to the engine operator’s manual for specific intervals.	—	1000 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
Coolant level	Check			Check daily
Electrical connections	Check			Check daily
Fuel level	Check			Check daily
Oil level	Check			Check daily
Tire pressure	Check			Check daily
Air cleaner	Check	250 hr		First service — Mitsubishi maintenance schedule
All Electrical Connections	Check	50 hr		Mitsubishi schedule
Bolts and nuts on engine	Adjust	50 hr		First service — Mitsubishi: retighten after initial 50 hours.
Change engine oil and oil filter	Change	50 hr		First service — Initial 50-hour change, then at the appropriate interval thereafter
Engine bolts and nuts	Adjust	50 hr		First service — Mitsubishi after first 50 hours
Engine oil and oil filter	Replace	250 hr		First service — Perform after initial 50 hours, then on regularly scheduled interval.
Fuel Tank - Water	Drain	50 hr		MLT3060MV Mitsubishi schedule
Fuel tank water	Drain	50 hr		Mitsubishi engine
Light Tower Winch	Inspect	50 hr		Inspect for proper operation
Radiator Fins	Clean	50 hr		Inspect for debris, clean as required
Radiator fins	Inspect	50 hr		Inspect for debris, clean as required
Water Separator	Drain	100 hr		MLT3060KV / MLT3080KV Kubota schedule
Fan Belt Tightness	Check	100 hr		MLT3060KV / MLT3080KV Kubota schedule
Fuel Filter	Clean	100 hr		MLT3060KV / MLT3080KV Kubota schedule
Intake Air Line	Check	200 hr		MLT3060KV / MLT3080KV Kubota schedule
Engine Oil	Change	200 hr		First service — MLT3060KV / MLT3080KV Kubota schedule - * change after initial 50 hours, then at appropriate interval
Fuel Filter Cartridge	Replace	400 hr		MLT3060KV / MLT3080KV Kubota schedule
Fuel Pipes And Clamp Bands	Check	200 hr		MLT3060KV / MLT3080KV Kubota schedule
Fuel Tank Sediment	Clean	200 hr		MLT3060KV / MLT3080KV Kubota schedule - remove sediment
Oil Filter Cartridge	Replace	200 hr		First service — MLT3060KV / MLT3080KV Kubota schedule - * after initial 50 hours
Radiator Hoses And Clamp Bands	Check	200 hr		MLT3060KV / MLT3080KV Kubota schedule
Water Separator	Clean	400 hr		MLT3060KV / MLT3080KV Kubota schedule
Bolts And Nuts On The Engine	Other	250 hr		First service — Retighten; after initial 50 hours (Mitsubishi)
Engine Oil and Oil Filter	Change	250 hr		First service — Mitsubishi; perform after initial 50 hours, then regularly scheduled interval
Fuel filter	Replace	500 hr		Mitsubishi schedule
Air Cleaner Element	Clean	1000 hr		MLT3060MV Mitsubishi schedule - clean, check and replace
Fuel tank	Drain	1000 hr		Mitsubishi only; drain water
Belt And Belt Tension	Inspect	500 hr		MLT3060MV Mitsubishi schedule - inspect and adjust
Engine bolts and nuts	Other	500 hr		First service — Retighten; Mitsubishi engine, initial 50 hours then scheduled interval
Fan Belt	Replace	500 hr		MLT3060KV / MLT3080KV Kubota schedule
Fuel tank sediment	Other	500 hr		Remove sediment; Kubota engine
Glow plugs	Check	500 hr		Mitsubishi engine
Leveling jacks	Lubricate	500 hr	12 mo	Mitsubishi engine
Sediment In Fuel Tank	Other	500 hr		Remove (Kubota)
Engine starting battery	Inspect	1000 hr		Mitsubishi engine

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

Type	Item	Value	Unit	Condition
Pressure	Compressed air cleaning pressure (cabinet interior)	less than 40 PSI (276 kPa)	PSI (kPa)
Speed	Engine operating speed	1,800	rpm
Speed	Engine operating speed	1800	rpm
Speed	Operating Speed	1800	rpm
Temperature	Coolant temperature shutdown	210	°F (99°C)
Temperature	Coolant temperature shutdown limit	210	°F (99°C)
Torque	Trailer wheel lug nuts - first pass	20-25	ft-lbs (27-33 Nm)
Torque	Trailer wheel lug nuts - second pass	50-60	ft-lbs (67-81 Nm)
Torque	Trailer wheel lug nuts - third pass	90-120	ft-lbs (122-162 Nm)
Torque	Trailer wheel lug nuts, first pass	20-25 ft-lbs (27-33 Nm)	ft-lbs (Nm)
Torque	Trailer wheel lug nuts, second pass	50-60 ft-lbs (67-81 Nm)	ft-lbs (Nm)
Torque	Trailer wheel lug nuts, third pass	90-120 ft-lbs (122-162 Nm)	ft-lbs (Nm)
Torque	Wheel lug nuts	20-25	ft-lbs	First pass
Torque	Wheel lug nuts	50-60	ft-lbs	Second pass
Torque	Wheel lug nuts	90-120	ft-lbs	Third pass
Torque	Wheel lug nuts - first pass	20-25	ft-lbs (27-33 Nm)
Torque	Wheel lug nuts - first pass	20-25 ft-lbs (27-33 Nm)
Torque	Wheel lug nuts - second pass	50-60	ft-lbs (67-81 Nm)
Torque	Wheel lug nuts - second pass	50-60 ft-lbs (67-81 Nm)
Torque	Wheel lug nuts - third pass	90-120	ft-lbs (122-162 Nm)
Torque	Wheel lug nuts - third pass	90-120 ft-lbs (122-162 Nm)
Voltage	Available voltage at duplex receptacle (generator output)	120	V +/- 5V	engine running
Voltage	Ballast incoming voltage (GFCI receptacle)	120 ±5	V
Voltage	Incoming voltage to ballast	120	V +/- 5V
Voltage	Incoming voltage to ballast	120V +/- 5V	V
Voltage	Transformer output - stabilized	240-260VAC	VAC	stabilized
Voltage	Transformer output - strike	approximately 400VAC	VAC	as light strikes
Voltage	Transformer output as light strikes	400	VAC	light strike
Voltage	Transformer output at light strike	approximately 400VAC striking, stabilizing 240-260VAC	VAC
Voltage	Transformer output at strike (induces arc)	approximately 400	VAC	as light strikes
Voltage	Transformer output stabilized	240-260	VAC	stabilized

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	Capacity	Notes
Fuel	Diesel	33.8 gal (L)	Fuel Tank—Total 33.8 gal (128 L); usable 33.6 gal (127 L)
Grease	High quality grease for wheel bearings		Use high quality grease made specifically for lubrication of wheel bearings.
Other	Automotive grease / lightweight oil		For jack maintenance: automotive grease for internal gearing; lightweight oil for handle unit and caster axle.

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

Procedures

Light Tower Setup installation

⚠ Verify area above unit is clear of overhead wires and obstructions.

⚠ Do not set up the unit if high winds are expected.

Position unit at ground level or higher than the area to be illuminated.
Place unit on firm, relatively flat ground (less than 5° slope); block the wheels.
Pull tongue jack locking pin, rotate jack 90°, install pin, raise trailer tongue.
Ground the unit per NEC, state, and local regulations.
Pull outrigger locking pins, extend outriggers until spring loaded pin snaps; rotate jacks down.
Pull rear jack locking pin and rotate 90° until pin snaps into place.
Adjust all four jacks clockwise until pads firmly contact the ground.
Adjust lamps: loosen trunnion wing nuts, aim, then tighten hardware.

Towing the Unit installation

⚠ Tighten wheel lug nuts after first 50 miles to factory specifications.

Tools: torque wrench

Raise the rear jack completely and lock into travel position.
Raise outrigger jacks, swing up into travel position, and slide outriggers in.
Use tongue jack to place trailer on hitch; lock coupling and attach safety chains.
Lubricate grease fittings on the leveling jacks.
Connect trailer wiring and check directional and brake lights.
Verify mast cradle locking pin is in place.
Verify doors and enclosure are properly latched.
Check trailer tire inflation per Specifications.
Tighten wheel lugs in sequence: first pass 20-25 ft-lbs, second 50-60 ft-lbs, third 90-120 ft-lbs.

Cleaning the Unit maintenance

⚠ Do not wash the unit with a high pressure hose or power washer.

⚠ Do not wash the engine block or fuel tank with a power washer or steam cleaner.

Tools: low-pressure compressed air source

Wipe cabinet exterior and control panel with soft, clean rags.
Use low-pressure compressed air [less than 40 PSI (276 kPa)] to remove dust from cabinet interior.

Inspecting the Unit maintenance

If stored outside, check for water inside cabinet and generator before each use; dry if wet.
Inspect electrical cords; do not use if insulation cut or worn.
Verify winch cables in good condition and centered on each pulley; do not use kinked or unraveling cable.
Verify mast cable correct.
Verify safety pins for mast lock rod and mast lock bar present and secured with chain; check spring in mast lock bar.
Verify wheel lugs present and properly tightened.
Check coolant level daily in overflow jug; normal level between full and add.
Check oil level daily; do not start if below add mark; add only if below add mark; do not overfill.
Check fuel level.

Jack Maintenance maintenance

⚠ Perform at least annually.

Tools: grease gun, needle nose applicator

Apply a small amount of automotive grease to the internal gearing (jack cover or grease point).
Rotate the jack handle to distribute the grease evenly.
Apply lightweight oil to the handle unit at both sides of the tube (side-wind).
Lubricate the axle bolt and caster wheel nut assembly with lightweight oil.
For top-wind models, apply lightweight oil to the screw stem.

Lower Radiator Hose Heater Use and Maintenance maintenance

⚠ Improper use of the lower radiator hose heater could result in damage to the engine or personal injury. Do not modify the location of the lower radiator hose heater.

Ensure the cooling system is full of the proper mixture of water and engine coolant before each heater use.
The heater is designed for all-night operation; 2-5 hours of heating prior to starting is usually sufficient.
Ensure the unit is level to maintain proper orientation of the heater while in operation.
Use only an undamaged, outdoor rated, three-prong grounded 120VAC extension cord with a minimum 10A rating.
Before starting the engine, unplug the extension cord from the power first, then unplug the heater cordset.

Manually Lowering the Mast maintenance

⚠ Do not use this procedure unless absolutely necessary. Continuous use could damage the planetary gear brake of the winch. This procedure will not work if the planetary gear brake is damaged.

Tools: 3/8 inch allen head wrench

Remove the power cables from the two terminals on the winch motor assembly.
Remove the two flange head screws securing the winch motor assembly to the winch; retain the screws.
Carefully remove the motor assembly, making sure the two pieces do not separate.
Insert a 3/8 inch allen head wrench into the sleeve bearing.
Rotate the wrench counter-clockwise to lower the mast; if slack is observed stop immediately and remove the slack.
When the mast is completely down, reinstall the winch motor assembly with the retained screws.

Preparing for Service maintenance

⚠ Do not perform routine service unless all electrical components are shut down.

Verify the key switch is in the OFF position.
Verify the circuit breakers are switched OFF (O).
Disconnect the negative (-) terminal on the battery.
Attach a 'Do Not Start' sign to the control panel.

Removing the Lights for Transportation maintenance

On quick disconnect units, disconnect the power cords from the junction box at the top of the mast and replace the dust caps.
On hard wired units, remove the junction box cover and disconnect only the mast light wires from the connectors.
Remove the wing nut holding the light fixture bracket to the cross tube and attach the lights to the storage brackets.

Trailer Wheel Bearing Lubrication maintenance

Tools: grease gun

Remove small rubber plug on grease cap
Attach standard grease gun fitting to grease zerk fitting
Pump grease into fitting until new grease is visible around nozzle
Wipe excess grease from hub and replace rubber plug

Trailer Wheel Bearings maintenance

⚠ Use only a high quality grease made specifically for lubrication of wheel bearings.

Tools: grease gun

Remove the small rubber plug on the grease cap.
Attach a standard grease gun fitting to the grease zerk fitting.
Pump grease into the fitting until new grease is visible around the nozzle.
Wipe excess grease from the hub and replace the rubber plug.

Trailer Wheel Bearings Lubrication maintenance

⚠ Use only a high quality grease made specifically for lubrication of wheel bearings.

Tools: grease gun

Remove the small rubber plug on the grease cap.
Attach a standard grease gun fitting to the grease zerk fitting and pump grease until new grease is visible around the nozzle.
Wipe any excess grease from the hub with a clean cloth and replace the rubber plug.

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

Voltage reconnection

Voltage	Phase	Connection	Leads	Notes
120/240	1	AC distribution	From generator to main circuit breaker (40A) to lights and auxiliary outlets	Voltage regulation: Capacitor +/-6%

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

Filters for this engine

Air filter: Kubota RG64842831 Kubota RG15842930 Kubota R141142289 Donaldson P628324 Donaldson P629467 Donaldson P821575 Donaldson P822686 Donaldson P822858
Fuel filter: Donaldson P551039 Wix 33192
Oil filter: Kubota 7665025430 Donaldson P550162 Wix 51334 Ac Delco X45

Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.

Also used in

Bobcat 463 — Skid Steer Loader
Bobcat S300 — Skid Steer Loader
Bobcat S70 — Skid Steer Loader
Kubota B2100 — Tractor
Kubota B2320 — Tractor
Kubota ZD326 — Lawn Equipment

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.

Common questions

What is the oil capacity of the Kubota D1005-E3BG1-MGM-1?

The Kubota D1005-E3BG1-MGM-1 engine has an oil capacity of 5.1 liters.

What is the displacement of the Kubota D1005-E3BG1-MGM-1?

The Kubota D1005-E3BG1-MGM-1 has a displacement of 1.0 liters with 3 cylinders.

Which generators use the Kubota D1005-E3BG1-MGM-1 engine?

The Kubota D1005-E3BG1-MGM-1 powers 5 generator set(s), including Generac MLG6K, Generac MLT3060K, Generac MLT4060DOTK, Magnum MLT3060, Magnum MLT4060.

What oil filter does the Kubota D1005-E3BG1-MGM-1 use?

The Kubota D1005-E3BG1-MGM-1 uses oil filter part numbers Kubota 7665025430, Donaldson P550162, Wix 51334.

What fuel filter does the Kubota D1005-E3BG1-MGM-1 use?

The Kubota D1005-E3BG1-MGM-1 uses fuel filter part numbers Donaldson P551039, Wix 33192.

What air filter does the Kubota D1005-E3BG1-MGM-1 use?

The Kubota D1005-E3BG1-MGM-1 uses air filter part numbers Kubota RG64842831, Kubota RG15842930, Kubota R141142289.

How often should you change the oil in the Kubota D1005-E3BG1-MGM-1?

The Kubota D1005-E3BG1-MGM-1 oil change interval is every 1000 hours.

What is a common problem with the Kubota D1005-E3BG1-MGM-1 engine?

A commonly reported issue on generators using the Kubota D1005-E3BG1-MGM-1 is: Mast Lights On But the Light Output is Low. Cause: Fixture and/or lens is dirty. Lamp worn due to normal use. Damaged or loose electrical connections. Generator output incorrect. Low transformer output. Fix: Clean reflective surface inside fixture and both inside and outside surface of glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the glass. Replace lamp. Check the mast coil cord, mast junction box and mast light connections..