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Mitsubishi L2E Engine

Name: Mitsubishi L2E Engine
Brand: Mitsubishi

The Mitsubishi L2E is a 0.64 L 2-cylinder engine rated at 1800 rpm, producing up to 5.2 kW. It powers generator sets from Generac, including the MLTS, MLTS Export Power Option and MLTS Standard Unit. It holds 3.4 L (0.9 gal) of oil and 3.9 L (1.0 gal) of coolant.

Also known as: Mitsubishi® L2E

Part of the Mitsubishi L2E engine family — 3 variants share parts & fitment.

0.635 L

Displacement

Cylinders

1800 rpm

Rated speed

5 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Fault codes Procedures

Engine specifications

Oil capacity	3.4 L
Coolant capacity	3.9 L
Displacement	0.635 L
Cylinders	2
Rated speed	1800 rpm
Gross power	5 kW

Generator sets powered by this engine

Generac MLTSGenerac MLTS Export Power OptionGenerac MLTS Standard Unit

How to read your Mitsubishi engine serial & model number →

Common problems

Water pump failure
Fix: Contact a GMASD to replace.
Unit cranks but does not start
Cause: Low fuel level
Fix: Check fuel level in tank. Verify fuel pump operation.
Restricted air filter
Fix: Inspect air filter for blockage. Refer to OEM engine operator’s manual for additional information.
PAS engaged
Fix: Verify PAS is off.
Oil leaking from engine
Fix: Inspect the engine for leaks.
Mast lights off, checking outside control box
Cause: Light fixture is too hot
Fix: Allow light to cool 10–15 minutes before restarting.
Mast lights off, checking inside control box
Cause: Loose lighting connections
Fix: Inspect the connections inside the control box.
Low oil pressure shutdown
Cause: Low oil level
Fix: Verify oil level on dipstick. Add oil, if needed.
Loose lighting connections
Fix: Inspect the connections inside the mast junction box and each mast light housing/socket.
Leakage in coolant hoses, engine block, or water pump
Fix: Inspect 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.
Incorrect mix/frozen radiator
Fix: Thaw the radiator with an external heat source and flush the coolant system with the correct coolant mixture.
Illuminated LED indicates fault
Fix: See Troubleshooting
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.
Generator output incorrect
Fix: Check the incoming voltage to the ballast driver by checking the available voltage on the GFCI receptacle. Incoming voltage should be 120V ± 5V. If voltage is incorrect, the generator may require service.
Faulty thermostat
Fix: Contact a GMASD to replace.

Compiled from service & troubleshooting documentation across every generator set that uses the Mitsubishi L2E.

Maintenance schedule

Item	Capacity	Part #	Interval
Air filter		—	1620 hr
Fuel filter		—	1620 hr
Oil filter		—	1620 hr
Battery		—	3240 hr
Belt		—
Coolant	4.1 qt (3.9 L)	—
Oil	5.5 qt (5.2 L)	—	1 hr
Spark plug		—

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
Engine oil and oil filter	Change	1000 hr		First service — Mitsubishi L2E Tier 4: initial 50 hour break-in and oil change, then up to 1,000 hours between routine oil changes (larger sump, holds 5.5 qt [5.2 L])
PowerHalt shut-off valve (PAS)	Test		1 mo	Activation testing at a minimum of once per month; daily activations recommended
Wheel bearings	Inspect		6 mo	Check for play in each bearing every six months or depending on usage
Wheel bearings	Lubricate		12 mo	Minimum every 12 months or 12,000 miles (19,312 km); more frequent under dusty or damp conditions

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 - maximum	276	kPa
Pressure	Compressed air cleaning - maximum	40	psi
Speed	GFCI receptacle frequency	60.7	Hz	engine running, lights off
Speed	Generator frequency at GFCI receptacle	60.7	Hz	± 5%
Speed	Low frequency threshold at GFCI receptacle	58	Hz	engine running, lights off
Temperature	Coolant temperature shutdown threshold	210	°F (99 °C)	Stop engine immediately if reached
Temperature	High coolant temperature - stop engine threshold	210	°F
Temperature	Maximum ambient operating temperature	49	°C
Torque	Wheel lug nuts - first pass	20-25	ft-lbs	(27-33 Nm)
Torque	Wheel lug nuts - first pass	27-33	Nm
Torque	Wheel lug nuts - second pass	50-60	ft-lbs	(67-81 Nm)
Torque	Wheel lug nuts - second pass	67-81	Nm
Torque	Wheel lug nuts - third pass	122-162	Nm
Torque	Wheel lug nuts - third pass	90-120	ft-lbs	(122-162 Nm)
Voltage	GFCI receptacle output	120	VAC	± 5%
Voltage	GFCI receptacle voltage	120	VAC	engine running, lights off
Voltage	Incoming voltage to ballast driver (GFCI receptacle)	120	V	± 5V
Voltage	Low voltage threshold at GFCI receptacle	114	VAC	engine running, lights off

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	Capacity	Notes
Fuel		Ultra Low Sulfur Diesel Fuel Only (S≤15 mg/kg)	159.0 L	Fuel tank 42 gal (159 L); usable 39.9 gal (151 L)
Grease	Valvoline W615			High quality wheel bearing grease or equivalent
Grease	Valvoline W615 or equivalent			High quality grease for trailer wheel bearing lubrication

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

Code	Name	Meaning	Severity	Action
A	Low engine oil pressure or high engine coolant temperature	Low engine oil pressure or high engine coolant temperature	Shutdown	See General Troubleshooting — low oil pressure & high engine coolant temperature.
A+C	Engine overspeed or engine underspeed	Fault indicator LEDs A and C illuminated	Shutdown	Check connection on W terminal of DC Charge Alternator (WH/VI) to pin-9 on Power Zone controller; inspect function/tension of DC charge alternator and drive belt; contact Generac Mobile.
B	Low battery	Low battery	Warning	Check battery condition.
B+C	Loss of speed signal	Loss of speed signal	Warning	Check connection on W terminal of DC Charge Alternator (WH/VI) to pin-9 on Power Zone controller; inspect function/tension of DC charge alternator and drive belt; contact Generac Mobile.
C	Fail to crank (AUTO mode only)	Fault indicator LED C illuminated	Warning	See General Troubleshooting — fail to crank.

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

Procedures

Preparing Sensor for Use (Dusk-to-Dawn) adjustment

Verify controller is in AUTO mode with Dusk to Dawn schedule active.
Loosen screws on light shield.
Slide the light-shield up, decreasing sensor exposure to light, until the lights turn on.
Tighten screws on light shield.

Reset the PAS adjustment

⚠ Turn control power switch OFF (O) before resetting to prevent unexpected engine start-up

Turn control power switch OFF before resetting.
Rotate reset knob and hold while pulling T-handle until knob rotates counterclockwise into plunger detent (audible click).
Verify reset knob is parallel to intake pipe centerline.
Release T-handle, then release reset knob; knob should remain parallel to centerline.

Test the PAS (Positive Air Shutdown) diagnostic

⚠ Contact Generac Mobile Technical Support if valve does not close

Verify valve is open before testing.
Pull the T-handle, or press the emergency stop button, to trigger the actuator.
Confirm valve closed by verifying knob rotated perpendicular to pipe centerline.

Lubricate Trailer Wheel Bearings maintenance

Tools: Grease gun

Remove small rubber plug from metal end cap.
Attach standard grease gun fitting to Zerk grease fitting.
Pump grease into Zerk fitting until fresh grease is visible around nozzle.
Wipe excess grease from axle hub and replace rubber plug.

Lubricate the Wheel Bearings maintenance

Tools: grease gun

Remove the small rubber plug (A) from the metal end cap (B).
Attach a standard grease gun fitting to the Zerk grease fitting (C).
Pump grease into the Zerk fitting until fresh grease is visible around the nozzle.
Wipe excess grease from the axle hub and replace the rubber plug.

Manual Winch Maintenance maintenance

⚠ Do not get oil or grease on the brake mechanism

Apply thin film of grease to gear teeth annually.
Oil the bushings as needed.
Lubricate ratchet pawl pivot point with thin oil.

Manually Lowering Electric Mast maintenance

⚠ Do not use this procedure unless absolutely necessary. Frequent use could damage the motor shaft.

Tools: drill

Remove the motor cover (A).
Attach a drill chuck firmly to the exposed motor shaft (B).
Using the drill, slowly rotate the motor shaft counterclockwise to lower mast.
Detach the drill chuck and install the motor cover.

Preparing for Service maintenance

⚠ Accidental start-up. Disconnect negative battery terminal before servicing to prevent accidental engine rotation.

If equipped with Power Zone controller, verify the main circuit breaker is OFF; otherwise verify key switch is OFF.
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.

Tighten Wheel Lugs (after tire removal/replacement) 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 the first road use.

Place Trailer Tongue in Storage Position operation

⚠ Pinching and crushing hazard. To avoid possible injury, keep fingers away from pivot point when folding or unfolding trailer tongue.

Verify unit is on a level surface and wheels are blocked.
Extend jack (A) enough to allow minimum effort to pivot trailer tongue.
Remove pins (B) and (C) from trailer tongue.
Pivot trailer tongue into storage position.
Install pins (B) and (C) at locations shown to secure tongue.
Remove clevis and remove jack (A) from tongue weldment.
Completely retract jack.
Rotate jack 90° counterclockwise, place on weldment, install clevis.

Place Trailer Tongue in Tow Position operation

⚠ Pinching and crushing hazard. To avoid possible injury, keep fingers away from pivot point when folding or unfolding trailer tongue.

Verify unit is on a level surface and wheels are blocked.
Remove clevis securing jack parallel to ground.
Remove jack from tongue weldment; hold vertically and extend until weldment aligns with tongue weldment.
Install jack and secure with clevis (D).
Remove pins (B) and (C).
Using both hands, slowly lower trailer tongue into tow position.
Install pins as shown to secure trailer tongue in tow position.

Raising the Mast - Electric Winch (If Equipped) operation

⚠ Contact a GMASD immediately if the mast hangs up or the winch cable develops slack.

Set up and level the unit.
Inspect mast cables for excessive wear or damage and verify they are centered in each pulley (A).
Loosen mast rotation knob, turn mast to desired direction, tighten knob.
Press and hold winch control switch (B) upward to telescope the mast.
Stop extending when the colored mark (C) on the second mast section is visible.

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

Parts cataloged across the Mitsubishi L2E family

Part #	Description	Category
010572	Owner’s Manual for Mobile Light Tower	other_service
010573	J	other_service
010576	A F C B E D G H Power Zone Autolight controller	other_service
010578	A B C D E	other_service
010579	A	other_service
010580	A B C	other_service
010581	A 010582 A B C 010583 A B C	other_service
010582	Flex Switch	other_service
010583	LED - AUTO Mode Button	other_service
010584	A B C D E F G	other_service
010585	LED - START-STOP Button	other_service
010586	LED - AUTO Mode Button	other_service
010587	LED - AUTO Mode Button	other_service
010588	LED - AUTO Mode Button	other_service
010589	LED - AUTO Mode Button	other_service
010590	Main AC Circuit Breaker	other_service
010591	Light Fixture ON-OFF Button	other_service
010594	Light Fixture ON-OFF Button	other_service
010596	Light Fixture ON-OFF Button	other_service
010597	Light Fixture ON-OFF Button	other_service
010598	Light Fixture ON-OFF Button	other_service
015148	Utility Cord	other_service
015209	A D E H B C K J L G F M G	other_service
015210	A G B E H C D M J K L F	other_service
015216	B E F C D A G A GFCI breaker (if equipped) B DC circuit breaker C DC circuit breaker D AC circuit breaker (if equipped) E Light switch F Inlet receptacle (5-15P) G Outlet receptacle (5-20R GFC) H Engine hour meter Displays how many hours engine has run J Engine ignition switch K Engine/utility power selector switch (flex switch) L Main breaker M Mast UP-DOWN switch (if equipped)	other_service
015217	Warning Label	other_service

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Aftermarket parts that fit this engine

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Common questions

What is the oil capacity of the Mitsubishi L2E?

The Mitsubishi L2E engine has an oil capacity of 3.4 liters.

What is the displacement of the Mitsubishi L2E?

The Mitsubishi L2E has a displacement of 0.635 liters with 2 cylinders.

Which generators use the Mitsubishi L2E engine?

The Mitsubishi L2E powers 3 generator set(s), including Generac MLTS, Generac MLTS Export Power Option, Generac MLTS Standard Unit.

How often should you change the oil in the Mitsubishi L2E?

The Mitsubishi L2E oil change interval is every 1 hours.

What is a common problem with the Mitsubishi L2E engine?

A commonly reported issue on generators using the Mitsubishi L2E is: Water pump failure. Fix: Contact a GMASD to replace..