Home›Engines›Isuzu 4LE2XAGV01

Isuzu 4LE2XAGV01 Engine

Name: Isuzu 4LE2XAGV01 Engine
Brand: Isuzu

The Isuzu 4LE2XAGV01 is a 2.2 L 4-cylinder turbocharged, aftercooled engine rated at 1800 rpm, producing up to 57 kW. It powers generator sets from Generac, including the MMG45IF4 and MMG50ITM. It holds 10.4 L (2.7 gal) of oil and 17 L (4.5 gal) of coolant.

Also known as: Isuzu 4LE2XAGV01

2.2 L

Displacement

Cylinders

1800 rpm

Rated speed

57 kW

Gross power

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

Service parts for the 4LE2XAGV01

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

Air intake

1 required

8972319000Air filter$95.00eBay

Fuel system

1 required

8981527372Fuel filter$14.97PartsGeek

Oil system

1 required

X13201002Oil filter$11.97PartsGeek

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

Engine specifications

Oil capacity	10.4 L
Coolant capacity	17.0 L
Displacement	2.2 L
Cylinders	4
Aspiration	Turbocharged, aftercooled
Rated speed	1800 rpm
Gross power	57 kW

Generator sets powered by this engine

Generac MMG45IF4 Generac MMG50ITM

Common problems

Unit will not start in AUTO with 2-wire start signal.
Cause: See if screen says unit not activated.
Unit was running and shuts down, attempts to restart. RPM SENSE LOSS
Cause: Check the LEDs/Screen for alarms.
Fix: Clear alarm and remove household loads from the generator. Put back in AUTO and restart. If problem returns, contact Independent Authorized Servicing Dealer to investigate possible fuel issue.
Unit shuts down during operation. HIGH TEMPERATURE
Cause: Check ventilation around the intake, exhaust and rear of generator.
Fix: Contact s Independent Authorized Servicing Dealer if no obstruction is found.
Unit running in AUTO but no power in house.
Cause: Check Generator Disconnect circuit breaker.
Fix: Contact Independent Authorized Servicing Dealer if Generator Disconnect circuit breaker is in the ON position.
Unit consumes large amounts of oil.
Cause: 1) Oil tank is over filled with oil. 2) Engine breather defective. 3) Improper type or viscosity of oil. 4) Damaged gasket, seal or hose.
Fix: 1) Adjust oil to proper level. 2) * 3) See Engine Oil Recommendations. 4) Check for oil leaks.
Undervoltage RED Unit shuts down during operation or starting. 1056 VSCF
Fix: Check the LEDs/Screen for alarms. The generator output voltage is too low. Probable causes are: 1) The load is too large. Remove load and attempt to restart unit. 2) Alternator or AVR damage. Contact Independent Authorized Servicing Dealer.
Speed mismatch RED Unit shuts down during Operation or starting. 1066 VSCF
Fix: Check the LEDs/Screen for alarms. Probable causes are: 1) Fuel problem (pressure loss). Check fuel supply and attempt to restart unit. 2) Large overload. Remove load and attempt to restart unit. 3) Throttle or engine problem. Contact Independent Authorized Servicing Dealer.
Shutdown indicator LED.
Fix: Resolve by resolving shutdown condition.
Phase Error RED Unit shuts down during starting. 1055 VSCF
Fix: Check the LEDs/Screen for alarms. An incorrect voltage and frequency has been detected during starting. Probable causes are: 1) Alternator damage. Contact Independent Authorized Servicing Dealer. 2) Generator has started into a severe load. Manually operate generator breaker and try to restart unit. If problem persists, remove load and attempt to restart unit again. 3) The engine may not be reaching its prescribed speed. Proceed as follows: •Verify stepper motor is moving and linkage is free. •Verify stepper motor is plugged in. •Verify gas pressure is within specified limits.
Overvoltage RED Unit shuts down during operation or starting. 1057 VSCF
Fix: Check the LEDs/Screen for alarms. Probable causes are: 1) The generator has been overloaded. Remove load and attempt to restart unit. 2) Generator has started into a severe load. Manually operate generator breaker and try to restart unit. If problem persists, remove load and attempt to restart unit again.
Overload RED Unit shuts down during operation. 1049 VSCF
Fix: Check the LEDs/Screen for alarms. Generator output is shorted or severely overloaded. Identify and clear the overload, and then restart.
Overfrequency RED Unit shuts down during operation. 1065
Fix: Check the LEDs/Screen for alarms. Probable causes are: 1) Overload. Remove load and attempt to restart unit. 2) RPM sensor has failed. Contact Independent Authorized Servicing Dealer. 3) Stepper motor problem. Contact Independent Authorized Servicing Dealer.
Output voltage is low/high.
Fix: Voltage calibration incorrect. Contact Independent Authorized Servicing Dealer.
No AC output from generator.
Cause: 1) Main line circuit breaker is in the OFF (or OPEN) position. 2) Generator internal failure.
Fix: 1) Reset circuit breaker to ON (or CLOSED). 2) *
Lug Door Open indicator LED.
Fix: Resolve by closing lug-box door. If condition remains unresolved, inspect lug-box door safety switch for proper operation.

Compiled from service & troubleshooting documentation across every generator set that uses the Isuzu 4LE2XAGV01.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Replace when the yellow center bar of the filter minder gauge reaches the red section (20 in. H2O)		8972319000		Amazon eBay $95.00
Fuel filter			8981527372		Amazon eBay $30.00 PartsGeek $14.97
Oil filter			X13201002		Amazon eBay $23.95 PartsGeek $11.97
Battery	Group 35/55, 12V (1 per unit), 720 CCA		—
Belt	Remove and check for wear at the 500 hour/12 month service interval; inspect pulleys and bearings		—	500 hr
Coolant		17.0 L	—
Oil		10.4 L	—

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 (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
Electromagnetic Pump Filter	Replace	250 hr		Replacement or cleaning
Engine Oil	Replace	250 hr		First service — Change the oil after the first 50 hours
Engine Oil (Isuzu, MMG25IF4)	Change	250 hr		Every 250 hours, MMG25IF4 only
Fan Belt Tension	Check	250 hr		Replace if necessary
Fuel Filter Element	Replace	250 hr
Oil Filter Element	Replace	250 hr
Water Sedimenter Element	Clean	250 hr
Air Filter Element	Replace	500 hr
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
Fan Belt	Replace	500 hr	12 mo	Belt to be removed and checked for wear at 500 hour/12 month service interval
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
Generator Drive Plate Torque	Check	500 hr		Refer to page 39
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	500 hr	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

Type	Item	Value	Unit	Condition
Gap	Air filter restriction (replace air filter)	20	in. H2O	yellow center bar reaches red section
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	Engine oil pressure (normal operating)	241-552	kPa	engine running
Pressure	Engine oil pressure (normal operating)	35-80	psi	engine running
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	Low oil pressure shutdown	138	kPa
Pressure	Low oil pressure shutdown	20	psi
Pressure	Maximum tire pressure	50	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
Pressure	Oil pressure reading after start	34	kPa	within five seconds
Pressure	Oil pressure reading after start	5	psi	within five seconds
Speed	Engine operating speed	1800	rpm
Speed	Frequency, no load	60	Hz	no load
Temperature	Ambient air temperature limit	120	°F
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	Maximum water temperature	110	°C
Temperature	Maximum water temperature	230	°F
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	36	ft-lbs
Torque	Generator drive plate bolts	49	Nm
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
Torque	Trailer wheel lug nuts, first pass	27-33	Nm
Torque	Trailer wheel lug nuts, second pass	50-60	ft-lbs
Torque	Trailer wheel lug nuts, second pass	67-81	Nm
Torque	Trailer wheel lug nuts, third pass	122-162	Nm
Torque	Trailer wheel lug nuts, third pass	90-120	ft-lbs
Voltage	Battery Voltage Gauge Range	0-50	V
Voltage	Battery voltage	13-14	V	engine running, 12V systems
Voltage	Battery voltage	24-26	V	engine running, 24V systems
Voltage	Fine voltage adjustment example window, 208/120V position	108-132	V	line to neutral
Voltage	Fine voltage adjustment example window, 208/120V position	188-228	V	line to line
Voltage	Generator output voltage tolerance versus selector switch setting	10	%
Voltage	Normal Battery Reading	12-14	V	12 volt systems, engine running
Voltage	Normal Battery Reading	24-26	V	24 volt systems, engine running
Voltage	Voltage regulation	+/- 1	%

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
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)
Grease		High quality grease made specifically for lubrication of wheel bearings		Trailer wheel bearings; lubricate at least every 12 months or 12,000 miles (19,312 km); automotive grease for leveling jack internal gearing; lightweight oil for jack handle/screw stem

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
AnInIOM Sd	AnInIOM Sd	Shutdown alarm configurable on the input of IG-IOM/IGS-PTM.	Shutdown
AnInIOM Wrn	AnInIOM Wrn	Warning alarm configurable on the input of IG-IOM/IGS-PTM.	Warning
Battery Flat (low battery)	Battery Flat	If the controller switches off during starting sequence due to bad battery condition, it doesn't try to start again and activates this protection.	Shutdown
Binary Input	Binary Input	Configurable Warning/Shutdown alarms on the inputs of IL-NT.
ChrgAlternFail	ChrgAlternFail	Failure of the alternator to charge the battery.	Warning
EmergencyStop	EmergencyStop	If the red emergency stop switch is pushed or opened, shutdown is immediately activated.	Shutdown
Engine Temp Sd	Engine Temp Sd	Water temperature is greater than Sd Water Temp setpoint.	Shutdown
Engine Temp Wrn	Engine Temp Wrn	Water temperature is greater than Wrn Water Temp setpoint.	Warning
Fgen<,>	Fgen<,>	The generator frequency is out of limits given by Gen >f and Gen <f setpoints.	Shutdown
Fuel Level Sd	Fuel Level Sd	Fuel level is smaller than Sd Fuel Level setpoint (5%).	Shutdown
Fuel Level Wrn	Fuel Level Wrn	Fuel level is smaller than Wrn Fuel Level setpoint (15%).	Warning
GCB fail	GCB fail	Failure of the generator circuit breaker.	Shutdown
Igen unbl	Igen unbl	The generator current is unbalanced.	Shutdown
Low BackupBatt	Low BackupBatt	RTC backup battery is flat (low).	Warning
Oil Press Sd	Oil Press Sd	Oil pressure is smaller than Sd Oil Press setpoint.	Shutdown
Oil Press Wrn	Oil Press Wrn	Oil pressure is smaller than Wrn Oil Press setpoint.	Warning
Overload	Overload	The load is greater than the value given by Overload setpoint.	Shutdown
Overspeed	Overspeed	The protection comes active if the speed is greater than Overspeed setpoint.	Shutdown
ParamFail	ParamFail	Wrong checksum of parameters. Typically happens after downloading new firmware or changing a parameter. The controller stays in INIT mode.		Check all parameters, write at least one new parameter.
PickupFault	PickupFault	Failure of the magnetic pick up sensor for speed measurement.	Shutdown
Sd IOM fail	Sd IOM fail	Shutdown alarm in case of lost connection to IOM/IGS-PTM module.	Shutdown
SprinkIActive	SprinkIActive	The protection is active if the output Sprinkler is closed.	Warning
Start failed	Start failed	Unit did not start.	Shutdown	Press FAULT RESET to clear the controller, then press ENGINE START.
Stop fail	Stop fail	Unit did not stop.	Shutdown
Ubat	Ubat	Battery voltage is out of limits given by Batt Undervolt setpoints.	Warning
Underspeed	Underspeed	During starting, when RPM reaches Starting RPM setpoint the starter switches off; speed can drop under Start RPM again and Underspeed becomes active. Protection evaluation starts 5 seconds after startup.	Shutdown
Vgen unbal	Vgen unbal	The generator voltage is unbalanced more than the value of Volt unbal setpoint.	Shutdown
Vgen<,>	Vgen<,>	The generator voltage is out of limits given by Gen <V and Gen >V setpoints.	Shutdown
Wrn ECU Alarm	Wrn ECU Alarm	ECU alarm list is not empty.	Warning
Wrn RA15 fail	Wrn RA15 fail	Warning alarm in case of lost connection to IGL=RA15 module.	Warning
WrnMaintenance	WrnMaintenance	The period for servicing is set by the WrnMaintenance setpoint; protection comes active when the running hours of the engine reach this value.	Warning	Reset the Time to Service reminder to the 250 hour interval.

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

Procedures

Adjusting the Display Backlighting adjustment

Press and hold ENTER, then press the up or down arrow to increase or decrease brightness.
Release ENTER when the desired brightness is attained.

Fine Voltage Adjustment adjustment

⚠ NEVER change the voltage selector switch while the engine is running or the controller is on.

Tools: Flat head screwdriver

Check the output voltage on the Generator screen (L1N or L12 voltage).
Nominal output voltage should be within 10% of the voltage rating on the voltage selector switch.
Use a flat head screwdriver to turn the voltage adjustment screw until the voltage matches the selector setting.
Adjustment must be made within the 45 second V Detect countdown.

Lowering the Trailer Tongue installation

⚠ If the jack was used to support the unit, move the jack back to the tongue location before towing.

Tools: Hoist or forklift, Front jack, Hitch pins

Elevate the unit using a hoist or forklift, or use the front jack on the trailer tongue.
Remove the hitch pin (1) securing the tongue to the trailer frame, then remove hitch pin (2) from the trailer frame.
Lower the trailer tongue and reinstall the hitch pins at the locations shown (3).

Checking Generator Drive Plate Torque maintenance

Tools: Torque wrench

Disconnect the engine starting battery.
Remove the generator fan guard.
Torque each of the drive plate bolts to 36 ft-lbs (49 Nm).
Reinstall the generator fan guard. Reconnect the battery.

Jack Maintenance maintenance

⚠ Perform these procedures at least annually.

Tools: Grease gun or needle nose applicator, Automotive grease, Lightweight oil

Side-wind models: apply a small amount of automotive grease to the internal gearing via the jack cover or lubrication point.
Side-wind models: apply lightweight oil to the handle unit at both sides of the tube.
Side-wind models: lubricate the caster wheel axle bolt and nut assembly with the same lightweight oil.
Top-wind models: apply a lightweight oil to the screw stem.

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

Resetting the Time to Service Reminder maintenance

With the unit shut down, power up the controller with the Control Power switch.
Press PAGE SELECT; lines of text display starting with Password.
Press the down arrow to move the cursor to Engine Protect.
Press ENTER; WrnMaintenance appears with the current service time (0) below it.
Press ENTER; the current run time in hours appears under WrnMaintenance.
Press the up arrow to reset the current run time hour setting to 250.
Press ENTER to save the run time hour setting.
Move the Control Power switch to the OFF (O) position.

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.

Trailer Wheel Bearings maintenance

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

Tools: Standard 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.

Auto (Remote) Starting of the Unit operation

⚠ Verify that the contacts on any remote switch linked to the unit are OPEN before entering Auto mode.

Tools: Jumper wire (minimum 16 gauge)

Perform a manual start of the generator at least once to verify the engine operates correctly.
To check the remote start circuit, remove the remote start terminal block wires, press Auto, and attach a jumper wire (minimum 16 gauge) across the two terminals.
The engine should crank, start and run.
Remove the jumper wire; the engine stops. Reconnect any necessary remote start switch wires.
Confirm the unit is in Auto mode; the LCD window should have AUT highlighted.
Close the main circuit breaker (set to ON (I) position).
Secure the generator by closing and locking all access doors.

Auto Exercise Timer operation

⚠ The controller must be in Auto mode to run at the programmed time. Use a trickle battery charger or solargizer to prevent the controller from draining the battery while in Auto mode.

Press PAGE SELECT until Password appears at the top of the screen.
Press down arrow until Date/Time is selected and press ENTER.
Press down arrow until Timer1 Repeat is selected and press ENTER.
Choose the day or days the unit should run and press ENTER.
Press down arrow until Timer1 ON Time is selected and press ENTER.
Adjust the desired time to start running and press ENTER.
Press down arrow until Timer1Duration is selected and press ENTER.
Adjust the run period length and press ENTER.
Press PAGE SELECT three times to return to the Main menu.
Press AUTO to switch modes to automatic.

Manual Starting of the Unit operation

⚠ CARBON MONOXIDE: USING A GENERATOR INDOORS CAN KILL YOU IN MINUTES.

Move the Control Power switch to the ON (I) position.
The LCD window displays system information and all LEDs flash.
The Ready screen is displayed and the LCD indicates Manual mode; Ready/Manual LED lit.
Press ENGINE START. The Prestart screen is displayed and a countdown begins from 20 seconds to 0.
The Starting screen is displayed. The engine cranks and starts running.
The Running screen displays. The 45 second V Detect time delay begins counting down.
The LCD window toggles from the Running screen to the Generator screen then the Engine screen.
If the engine does not start, it pauses 15 seconds; up to three crank cycles are made.
If the engine does not start, LCD shows SD START FAIL. Press FAULT RESET to clear the controller.
Once started, the engine speeds up to a constant 1800 rpm.
Check for excessive noise, vibration, and coolant, oil or fuel leaks before applying loads.
Check that the AC output voltage is correct; fine adjust with the fine voltage adjustment screw.
Check that the frequency is correct; with no loads it should read approximately 60 Hz.
Switch the main circuit breaker to ON (I), then add convenience receptacle loads via their breakers.

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	1	GFCI Duplex receptacle L-N		GFCI duplex receptacles read 120V in the 120/208V 3-phase and 120/240V positions; twist-locks 208V / 120V (3-phase) or 240V / 120V (1-phase).
120/208V	3	L1-L2, L2-L3, L3-L1	Black (L1), Blue (L2), Red (L3), White (N), Green (G)	L-L = 208V; L-N = 120V. Voltage selector switch 120/208V 3-phase position.
120/240V	1	L3-L1, L1-N	Black (L1), Red (L3), White (N), Green (G)	L3-L1 = 240V; L1-N = 120V; L3-N = 120V. 120/240V 1-phase selector position (4 position switch option).
120/240V	3	L1-L2, L2-L3, L3-L1	Black (L1), Blue (L2), Red (L3), White (N), Green (G)	L1-L2 = 240V, L1-N = 120V; L2-L3 = 240V, L2-N = 208V; L3-L1 = 240V, L3-N = 120V. 120/240V 3-phase selector position.
139	1	GFCI Duplex receptacle L-N		GFCI duplex receptacles read 139V when the voltage selector switch is in the 277/480V 3-phase position; twist-locks 240V / 139V. Not recommended for normal use.
277/480V	3	L1-L2, L2-L3, L3-L1	Black (L1), Blue (L2), Red (L3), White (N), Green (G)	L-L = 480V; L-N = 277V. Voltage selector switch 277/480V 3-phase position; switch is lockable.

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: Isuzu 8972319000 Donaldson P827653 Wix 46671
Fuel filter: Isuzu 8981527372 Donaldson P502163 Donaldson P502424 Wix 33393 Wix 33740
Oil filter: Isuzu X13201002 Donaldson P557780 Wix 51452 Ac Delco PF960

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

Also used in

Hitachi ZX40U — Excavator Compact
Hitachi ZX50U — Excavator Compact
Kobelco SK80 — Excavator Tracked
Sany SY70C — Excavator
Sany SY75C — Excavator

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 Isuzu 4LE2XAGV01?

The Isuzu 4LE2XAGV01 engine has an oil capacity of 10.4 liters.

What is the displacement of the Isuzu 4LE2XAGV01?

The Isuzu 4LE2XAGV01 has a displacement of 2.2 liters with 4 cylinders.

Which generators use the Isuzu 4LE2XAGV01 engine?

The Isuzu 4LE2XAGV01 powers 2 generator set(s), including Generac MMG45IF4, Generac MMG50ITM.

What oil filter does the Isuzu 4LE2XAGV01 use?

The Isuzu 4LE2XAGV01 uses oil filter part numbers Isuzu X13201002, Donaldson P557780, Wix 51452.

What fuel filter does the Isuzu 4LE2XAGV01 use?

The Isuzu 4LE2XAGV01 uses fuel filter part numbers Isuzu 8981527372, Donaldson P502163, Donaldson P502424.

What air filter does the Isuzu 4LE2XAGV01 use?

The Isuzu 4LE2XAGV01 uses air filter part numbers Isuzu 8972319000, Donaldson P827653, Wix 46671.

What is a common problem with the Isuzu 4LE2XAGV01 engine?

A commonly reported issue on generators using the Isuzu 4LE2XAGV01 is: Unit will not start in AUTO with 2-wire start signal.. Cause: See if screen says unit not activated..