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Kubota D722 Engine

Name: Kubota D722 Engine
Brand: Kubota

The Kubota D722 is a 0.72 L 3-cylinder turbocharged engine rated at 3000 rpm, producing up to 14.9 kW. It powers generator sets from Atlas Copco, FG Wilson, Fischer Panda, Kubota and WhisperPower, including the XAS 38, XAS 38 Kd, KH9-1S and Mini-Power Station. It holds 3.4 L (0.9 gal) of oil and 4.1 L (1.1 gal) of coolant.

Also known as: D722, KUBOTA D722

Part of the Kubota D722 engine family — 3 variants share parts & fitment.

0.719 L

Displacement

Cylinders

3000 rpm

Rated speed

14 kW

Gross power

On this pageSpecs Generator sets FAQ Service intervals Torque & specs Fluids Procedures Wiring

Engine specifications

Oil capacity	3.4 L
Coolant capacity	4.1 L
Displacement	0.719 L
Cylinders	3
Aspiration	Turbocharged
Rated speed	3000 rpm
Gross power	14 kW

Generator sets powered by this engine

Shared across brands: Atlas Copco, FG Wilson, Fischer Panda, Kubota, WhisperPower

Atlas Copco XAS 38Atlas Copco XAS 38 KdFG Wilson KH9-1S Fischer Panda Mini-Power Station Kubota GL 11000 Kubota GL 9000 Kubota GL11000-STD Kubota GL11000-USA Kubota GL6000D-AU-B Kubota GL9000-AUS Kubota GL9000-STD Kubota GL9000A-AU-B Kubota GL9000D-AU-B Kubota J110 WhisperPower Piccolo 10WhisperPower Piccolo 12WhisperPower Piccolo GV 3

This engine also powers 1 machine(s) on Power Equipment Info.

How to read your Kubota engine serial & model number →

Common problems

Use or operate the engine on or near any forest-covered, brush-covered land, or grass-covered land.
Fix: The exhaust system must be equipped with a working spark arrester meeting state laws.
Touch the terminals and sockets while the machine is running.
Fix: Avoid electric shock hazard: Do not touch the terminals and sockets while the machine is running.
Touch the machine with wet hands.
Fix: Avoid electric shock hazard: Do not touch the machine with wet hands.
Check and service the machine while it is running.
Fix: Avoid electric shock and injury hazard: Do not check and service the machine while it is running.
Battery fluid level stands below the LOWER mark.
Fix: Immediately, add distilled water until the fluid level is between the UPPER and LOWER levels. (for only refillable battery)
Generator does not start or runs poorly.
Cause: Faulty spark plug, dirty air filter, clogged fuel line, low fuel level, faulty ignition system, or incorrect engine oil level.
Fix: Check and replace the spark plug if necessary. Clean or replace the air filter. Clear any blockages in the fuel line. Refuel with fresh fuel. Check and adjust the ignition system as needed. Ensure the correct amount of engine oil is present.
Use machine in poorly-ventilated place
Fix: To avoid exhaust gas poisoning hazard, do not use the machine indoors or in tunnels.
Touch terminals and sockets while running
Fix: To avoid electric shock hazard, do not touch the terminals and sockets while the machine is running.
Touch machine with wet hands
Fix: To avoid electric shock, do not touch the machine with wet hands.
Direct exhaust to people and buildings
Fix: To avoid exhaust gas poisoning and fire hazard, do not direct the exhaust to people and buildings.
Check and service machine while running
Fix: To avoid electric shock and injury hazard, do not check and service the machine while it is running.
Battery fluid level below LOWER mark
Fix: To avoid component deterioration and potential explosion, add distilled water until the fluid level is between UPPER and LOWER marks.

Compiled from service & troubleshooting documentation across every generator set that uses the Kubota D722.

Service intervals

Item	Action	Hours	Months	Notes
Fuel line (fuel hose and clamp bands)	Check	50 hr		Every 50 hours
Fuel pipes and clamp bands	Check	50 hr		First service — Replace fuel pipes and clamp bands every 2 years or earlier
Oil filter cartridge	Change	200 hr		First service — Initial 50 hours
Air cleaner element	Clean	100 hr		First service — Every 100 hours
Battery	Check	100 hr		First service — Every 100 hours
Engine oil	Change	100 hr		First service — thereafter
Fan belt	Check	100 hr		Damage, wear and tension
Fuel filter	Clean	100 hr		Clean every 100 hours of operation
Fuel filter element	Clean	100 hr		Every 100 hours
Fuel filter pot	Clean	100 hr
Electric wiring and loose connections	Check	200 hr
Fan belt tension	Check	200 hr
Oil filter cartridge	Replace	200 hr		First service — Replace earlier if necessary; after the initial 50 hours
Radiator hose and clamp bands	Check	200 hr	6 mo	Every 200 hours or every six months, whichever comes first
Radiator hoses and clamp bands	Check	200 hr	6 mo	whichever comes first
Engine Oil Filter	Change	250 hr		GL9000 Kubota Parts
Generator's brush ware	Check	300 hr		Every 300 hours
Generator's slip-ring	Check	300 hr		Every 300 hours
Fuel filter cartridge or element	Replace	400 hr		First service
Fuel filter element	Change	400 hr		Every 400 hours
Intake air hose	Check	400 hr		First service
Fan belt	Replace	500 hr
Fuel Filter	Change	500 hr		GL9000 Kubota Parts
Radiator	Clean	500 hr		Clean every 500 hours; also before adding anti-freeze and before stopping use of anti-freeze
Water jacket (radiator interior)	Clean	500 hr		Every 500 hours
Battery	Replace	800 hr	24 mo
Valve clearance	Adjust	800 hr		Check and adjust when engine is cold
Valve clearance	Check	800 hr
Generator's ball bearing	Check	1000 hr		Every 1000 hours
Electric wiring	Inspect	1500 hr		Check for damage and loose connections
Fuel injection nozzle injection pressure	Check	1500 hr		Consult your local KUBOTA Dealer for this service
Fuel injection pressure	Check	1500 hr		Every 1500 hours
Injection pump	Check	3000 hr		Consult your local KUBOTA Dealer for this service
Nozzle spraying condition	Check	1500 hr		Every 1500 hours
Nozzle valve seat tightness	Check	1500 hr		Every 1500 hours
Air cleaner element	Change		12 mo	Once a year or every 6th cleaning
Air cleaner element	Replace	1500 hr	12 mo	Replace primary element every year or every 6 cleanings; replace secondary element at the same time
Air cleaner element (primary)	Replace		12 mo	Every year or every 6 cleanings; replace secondary element at the same time
Battery	Change		24 mo	Every 2 years
Battery electrolyte level	Check	100 hr	12 mo	Yearly when used less than 100 hours/year (refillable battery)

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
Clearance	Air gap (rotor to stator)	0.5	mm
Clearance	Air gap (rotor to stator)	0.7	mm
Clearance	Crankshaft side clearance	0.15 to 0.31	mm
Clearance	Cylinder head surface flatness allowable limit	0.05	mm
Clearance	Cylinder liner I.D. (standard)	67.000 to 67.019	mm
Clearance	Fan belt deflection	12 to 14	mm	under load of 98 N (22.1 lbs.), pressed in middle of span
Clearance	Fan belt tension (deflection)	12 to 14	mm (0.47 to 0.55 in.)	pressed in middle of the span under load of 98 N (22.1 lbs.)
Clearance	Oil clearance between crankpin and crankpin bearing	0.020 to 0.051	mm
Clearance	Piston ring gap, top ring	0.15 to 0.30	mm
Clearance	Slip-ring outside diameter	49.7	mm	correction limit 47.5 mm
Clearance	Slip-ring outside diameter	64.0	mm	correction limit 62.5 mm
Clearance	Top clearance	0.50 to 0.70	mm
Clearance	Valve recessing (intake and exhaust)	0.10 protrusion to 0.10 recessing	mm
Gap	Fan belt deflection	7.0 to 9.0	mm	at 98 N (10 kgf, 22 lbf)
Other	Anti-freeze 50 vol% boiling point	108	°C	at 1.013 x 10^5 Pa (760 mmHg)
Other	Anti-freeze 50 vol% freezing point	-37	°C
Other	Battery charging rate (constant)	6.0	A	initial battery charge
Other	Battery electrolyte specific gravity	1.270 to 1.290		at 20 degrees C (68 degrees F)
Other	Battery electrolyte specific gravity at charge completion	1.27 to 1.29		charge completed
Other	Battery electrolyte specific gravity when fully charged	1.270 to 1.290		at 20°C (68°F)
Other	Battery normal charging rate	6.0	A
Other	Compressed air pressure for cleaning air cleaner element	under 205	kPa	at nozzle
Other	Coolant mixing ratio	50/50	%	premix 50% LLC with 50% clean soft water
Other	Frequency tolerance	+/- 0,1	%
Other	Fuel cetane number	45 minimum		greater than 50 preferred below -20°C or above 1500 m
Other	Generator power factor	100	%
Other	Glow plug continuous use limit	20	seconds
Other	Peak power 2 s	200	%	2 s
Other	Preheating time 10°C to -5°C (50°F to 23°F)	Until glow lamp goes off
Other	Preheating time above 10°C (50°F)	NO NEED
Other	Preheating time below -5°C (23°F)	Approx. 5 seconds after the glow lamp goes off		limit of continuous use 20 seconds
Other	Starter motor continuous running limit	10	seconds	if engine fails to start, wait about 30 seconds and try again
Pressure	Compressed air for air cleaner element cleaning	under 205	kPa	air pressure at nozzle
Pressure	Compression pressure	2.84 to 3.24	MPa	at 3.3 to 5.0 1/s (200 to 300 rpm) with starter
Pressure	Compression pressure allowable limit	2.26	MPa
Pressure	Engine oil pressure at idle speed	More than 49	kPa	idle speed
Pressure	Engine oil pressure at rated speed	196 to 441	kPa	rated speed
Pressure	Engine oil pressure drop warning lamp activation	68.7 to 127.5	kPa
Pressure	Engine oil pressure drop warning lamp set point	68.7 to 127.5	kPa (0.7 to 1.3 kgf/cm2)	lamp flashes on below this oil pressure
Pressure	Engine oil pressure drop warning lamp threshold	68.7 to 127.5	kPa	easy checker lamp flashes on below this
Pressure	Engine oil pressure warning lamp threshold	68.7 to 127.5	kPa	lamp flashes on below this oil pressure
Pressure	Fuel injection pressure	13.73 to 14.71	MPa
Pressure	Fuel tightness of delivery valve	10 seconds	s	13.73 to 12.75 MPa (140 to 130 kgf/cm2)
Pressure	Fuel tightness of pump element (allowable limit)	13.7	MPa
Pressure	Nozzle valve seat tightness	No fuel leak at 12.75 MPa (130 kgf/cm2, 1849 psi)	MPa	kept for 10 seconds
Pressure	Oil pressure drop warning threshold	68.7 to 127.5	kPa (0.7 to 1.3 kgf/cm2)	warning lamp flashes below this pressure
Pressure	Radiator cap pressure falling time	More than 10 seconds	s	88 to 59 kPa (0.9 to 0.6 kgf/cm2, 13 to 9 psi)
Pressure	Radiator water leakage test pressure	157	kPa
Resistance	Glow plug resistance	Approx. 0.9	ohm
Resistance	Grounding insulation of stator / rotor / exciter coil	More than 1	M ohm	at 500 V with megohm meter
Speed	Engine speed	3000 / 3600	rpm	50 Hz / 60 Hz
Speed	Injection timing	0.30 to 0.33 rad (19 to 21°)	before T.D.C.
Speed	Rpm range	2400 .. 3600	rpm	adjustable
Temperature	Anti-freeze 50% boiling point	108	C	at 1.013 x 10 Pa (760 mmHg)
Temperature	Anti-freeze 50% freezing point	-37	C
Temperature	Coolant overheat warning lamp threshold	112 to 118	C	cooling water rises to this temperature
Temperature	Coolant overheat warning threshold	112 to 118	°C	warning lamp flashes
Temperature	Thermostat valve opening temperature (beginning)	69.5 to 72.5	°C
Temperature	Thermostat valve opening temperature (opened completely)	85	°C
Temperature	Water temperature overheat warning lamp	112 to 118	°C	flashes on when cooling water rises to this

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	Ambient	Capacity	Notes
Coolant	50/50 ethylene glycol long-life coolant (LLC) and clean soft water	SAE J1034 / SAE J814c		3.7 L	Kubota genuine LLC has 2-year service life
Coolant	50/50 mix of long-life coolant (ethylene glycol type) and clean soft water	SAE J1034 / SAE J814c		3.7 L	Including reserve tank 0.6 L; change every 2 years; flush radiator with fresh water before use
Coolant	Clean water (soft water) with antifreeze 50/50	Permanent type (PT) antifreeze; refer to SAE J1034 / SAE J814c; 40 vol% freezing point -24 °C, 50 vol% -37 °C		3.7 L	Antifreeze mixing ratio must be less than 50 %
Coolant	Ethylene glycol (EG) type long-life coolant, 50/50 mix with clean soft water	SAE J1034; SAE J814c		3.7 L	GL6000/GL7000 (Z482); 3.7 L (3.9 U.S.qts.), include reserve tank 0.6 L (0.63 U.S.qts.); change every 2 years
Coolant	Long-life coolant (LLC), ethylene glycol type, 50/50 with clean soft water	SAE J1034 / SAE J814c		3.7 L	GL6000, GL7000 (Z482); change every 2 years; includes reserve tank 0.6 L; GL9000/GL11000 (D722) = 4.1 L
Coolant	Pure water and anti-freeze			0.6 L	reserve tank volume; all seasons
Engine oil		API classification CF, CF-4, CG-4, CH-4 or CI-4 with ultra low sulfur fuel; CF with high sulfur fuel		2.2 L	GL6000/GL7000 (engine Z482); 2.2 L (2.3 U.S.qts.)
Engine oil	10W-30 or 10W-40	API CF or higher	below 10°C		below -10C
Engine oil	10W-30 or 10W-40 or 15W-40	API CF or higher / MIL-L-2104C			above 25C use 10W-30/10W-40/15W-40
Engine oil	API service class CF or higher	MIL-L-2104C		2.2 L	Change oil type according to ambient temperature
Engine oil	CF	High Sulfur Fuel [>0.05% (500 ppm)]			Other than North American market; halve intervals if CF-4/CG-4/CH-4/CI-4 used with high-sulfur fuel
Engine oil	CF, CF-4, CG-4, CH-4 or CI-4	Ultra Low Sulfur Fuel [<0.0015% (15 ppm)]			North American market; CJ-4 intended for DPF type engines
Engine oil	CF-4, CG-4, CH-4 or CI-4	Low Sulfur Fuel [<0.05% (500 ppm)] or Ultra Low Sulfur Fuel [<0.0015% (15 ppm)]			Other than North American market
Engine oil	SAE 10W-30 or 10W-40	API service class CF or higher (MIL-L-2104C)	below -10°C		below -10°C (14°F); oil viscosity higher than 10W-30 not allowed
Engine oil	SAE10W or SAE10W-30/10W-40	API CD or higher	below 0°C		Below 0°C (32°F)
Engine oil	SAE10W-30		below -10°C		Below -10 degrees C (14 degrees F)
Engine oil	SAE10W-30, SAE30 (above 25 °C); SAE10W-30, SAE10W-40, SAE20 (0 to 25 °C); SAE10W-30, SAE10W-40, SAE10 (below 0 °C)	API classification higher than CF; CF, CF-4, CG-4, CH-4 or CI-4 for low/ultra low sulfur fuel; CF or CI-4 for internal/external EGR engines		2.2 L	Minimum TBN of 10 recommended with high sulfur fuel; change oil at approximately half intervals with high-sulfur fuel
Engine oil	SAE10W-30 or SAE15W-40		-10°C to 25°C		-10 to 25 degrees C (14 to 77 degrees F)
Engine oil	SAE20 or SAE10W-30/10W-40	API CD or higher	0°C to 25°C		0 to 25°C (32 to 77°F)
Engine oil	SAE 10W-30 or 10W-40 or 15W-40	API service class CF or higher (MIL-L-2104C)	above 25°C		above 25°C (77°F)
Engine oil	SAE30 or SAE10W-30 or SAE15W-40	API classification CF or higher; MIL-L-2104C	above 25°C		Above 25°C (77°F)
Engine oil	SAE30 or SAE10W-30, SAE15W-40		above 25°C		Above 25 degrees C (77 degrees F)
Engine oil	SAE30 or SAE10W-30/10W-40	API CD or higher	above 25°C		Above 25°C (77°F)
Engine oil	SAE30 or SAE10W-30; SAE15W-40	API classification CF or higher; MIL-L-2104C	above 25°C		Above 25°C (77°F)
Fuel	Diesel fuel No. 2 (ASTM D975)	ASTM D975 / EN 590		28.0 L	Cetane number 45 min (50+ preferred below -20C or above 1500m); ultra low sulfur (<15ppm) required in EPA regulated areas
Fuel	Diesel fuel No.2-D	ASTM D975; EN 590			Cetane number 45 minimum (>50 preferred below -20°C or above 1500 m); below 0°C a mix of No.1-D and No.2-D is acceptable; No.2-D S15 in EPA regulated area
Fuel	Diesel fuel No.2-D (ASTM D975)	ASTM D975; EN 590; cetane number 45 minimum (greater than 50 preferred)			Below 0°C (32°F) a mix of No.1-D and No.2-D is acceptable; in EPA regulated areas use No.2-D S15 or No.1-D S15 below -10°C (14°F)
Fuel	Diesel fuel No.2-D (ASTM D975), cetane number 45 minimum	ASTM D975 / EN 590		28.0 L (7.4 U.S.gal.)	Below 0°C (32°F) mix No.1-D and No.2-D; ultra low sulfur fuel mandatory in EPA-regulated area
Fuel	Diesel fuel No.2-D (No.1-D/No.2-D mix below 0 degrees C)	ASTM D975 / EN 590		28.0 L	Cetane number 45 minimum; use No.2-D S15 or No.1-D S15 in EPA regulated areas; never use gasoline or alcohol
Fuel	Diesel fuel; minimum cetane rating 45 (greater than 50 preferred)	EN 590 or ASTM D975 recommended; No.2-D (SAE J313 JUN87); use No.2-D S500 or S15 in US EPA regulated areas		28.0 L	Sulfur content less than 0.10 % (1000 ppm) strongly recommended; do not use fuels with sulfur content greater than 1.0 % (10000 ppm)

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 Fan Belt Tension adjustment

⚠ Be sure to stop the engine and remove the key before checking the belt tension.

⚠ Be sure to reinstall the detached safety shield after maintenance or checking.

Stop the engine and remove the key.
Apply moderate thumb pressure to belt between pulleys.
If tension is not as specified, loosen the lock nut and turn the adjust nut to get belt tension within range.
Tighten up the lock nut.
Replace fan belt if it is damaged.

Adjusting Valve Clearance adjustment

⚠ Valve clearance must be checked and adjusted when engine is cold.

Tools: Feeler gauge

Remove the head cover, the glow plugs and the timing window cover.
Align the 1TC mark line on the flywheel with center of timing window for No. 1 piston.
Check valve clearance with a feeler gauge.
Adjust with the adjusting screw if not within factory specification.
Turn flywheel 6.28 rad (360°) and adjust all other valve clearances.
Recheck clearance and firmly tighten the lock nut.

Checking Fan Belt Tension adjustment

Tools: Belt tension gauge

Measure the deflection by depressing the belt halfway between the fan drive pulley and alternator pulley.
Loosen the alternator mounting screws if not within specification.
Relocate the alternator to adjust.

Checking Fuel Injection Pressure diagnostic

⚠ Check after making sure nobody stands in the direction the fume goes.

Tools: Nozzle tester

Set the injection nozzle to a nozzle tester.
Slowly move the tester handle to measure pressure at which fuel begins jetting out.
Replace the adjusting washer in the nozzle holder to adjust if out of specification.

Connecting the load (terminal output model) installation

⚠ Connect or disconnect load only when engine is stopped

Turn OFF the circuit breaker on the control panel.
Connect the load to the A.C. output terminals.
Close the terminal cover after connecting the load.
Secure the cover with the lock bolts.

Air bleeding the fuel system maintenance

⚠ Do not bleed a hot engine as this could cause fuel to spill onto a hot exhaust manifold creating a danger of fire.

Fill the fuel tank to the fullest extent. Open the fuel filter cock.
Loosen air vent plug of the fuel filter a few turns.
Screw back the plug when bubbles do not come up any more.
Open the air vent plug on top of the fuel injection pump.
Retighten the plug when bubbles do not come up any more.

Battery charging maintenance

⚠ The batteries come in two types: refillable and non-refillable. Do not use or charge a refillable battery if the fluid level is below the LOWER mark.

Tools: Charger, Voltmeter or hydrometer

Make sure each electrolyte level is to the bottom of vent wells; add only distilled water if necessary.
To slow charge, connect the charger positive terminal to the battery positive terminal and the negative to the negative.
Recharge the battery as early as possible, or battery life will be extremely shortened.
When exchanging an old battery for a new one, use a battery of equal specifications.

Changing Coolant maintenance

⚠ DO NOT remove the radiator cap while coolant is hot.

⚠ Work only after letting the engine and radiator cool off completely (more than 30 minutes after stopped).

To drain coolant, always remove both drain plugs and simultaneously open the radiator cap.
Remove the overflow pipe of the radiator pressure cap to drain the reserve tank.
Prescribed coolant volume includes reserve tank 0.6 L (0.63 U.S.qts.).
Fill with clean, fresh water and 50% anti-freeze.

Changing Coolant (L.L.C.) maintenance

⚠ Do not remove the radiator cap when the engine is hot.

Stop the engine and let cool down.
Open the water drain plug and remove radiator cap to drain the coolant.
Close the water drain plug.
Fill with clean water and anti-freeze until coolant level is just below the port.
Fill with coolant up to FULL mark on the recovery tank.
Start and operate the engine for few minutes, stop and let cool.
Check coolant level of recovery tank and add coolant if necessary.

Changing Engine Oil maintenance

⚠ Be sure to stop the engine before draining engine oil.

⚠ DO NOT drain oil from a hot engine. Allow engine to cool down sufficiently to avoid being burned.

Change oil after the initial 50 hours of operation and every 100 hours thereafter.
Remove the drain plug to drain the engine oil; drain completely while warm.
Inspect drain plug gasket. Replace if damaged.
Install the oil drain plug and gasket.
Add new engine oil up to the upper line of the oil level gauge.

Changing Engine Oil Filter Cartridge maintenance

⚠ Over-tightening may cause deformation of the rubber gasket.

⚠ Use only a KUBOTA genuine filter or its equivalent.

Tools: Filter wrench

Remove the engine oil filter cartridge with the filter wrench.
Apply engine oil slightly to the rubber gasket of new cartridge.
Install the new cartridge, screwing it in by hand.
Add engine oil to proper level after change.

Changing Fuel Filter Element maintenance

⚠ Stop the engine when checking the fuel line; leaking fuel may cause a fire.

Close the fuel valve.
Remove the fuel filter element.
Install the new fuel filter element, screwing it in by hand.
Check for fuel leak after replacement.

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
110 / 220 V	1 - 4	GL7000-STD, 60 Hz	Main coil R - W 0.25 ohm; BR - L 0.25 ohm	NFB capacity 29.5 A
110/220	1	Single phase 3 terminals type (1P4W type) dual voltage		GL7000-STD, 60 Hz
120 / 240 V	1 - 3	GL11000-USA, GL11000-USA-TM, 60 Hz	Main coil 1 - 3: 0.23 ohm; 1 - 2 and 2 - 3: 0.12 ohm; sub coil LG - LG 1.68 ohm; rotor coil 55.5 ohm	NFB capacity 42 A; GL11000-STD (110/220 V) main coil 0.19 / 0.10 / 0.10 ohm, sub coil 1.73 ohm, NFB 45.5 A
120 / 240 V	1 - 4	GL7000-USA, GL7000-USA-TM, 60 Hz	Main coil R - W 0.28 ohm; BR - L 0.28 ohm	NFB capacity 27.5 A
120/240	1	Receptacle output		GL7000-USA, GL11000-USA, 60 Hz
120/240	1	Single phase 3 terminals type (1P4W type) dual voltage		GL7000-USA-TM, 60 Hz
220	1	Single phase 2 terminals type		GL6000-STD, GL9000-STD, 50 Hz
220 V	1 - 2	GL6000-STD, 50 Hz	Main coil R - W: 0.55 ohm	Sub coil G - LG/R 1.08 ohm; sub coil (DC) L/W - L/W 0.11 ohm; detecting coil LG - L 0.05 ohm; rotor coil 59.5 ohm
220 V	1 - 3	GL9000-STD, 50 Hz	Main coil 1 - 3: 0.28 ohm; sub coil LG - LG 1.96 ohm; detecting coil R - R 0.04 ohm; rotor coil 55.5 ohm	NFB capacity 36.5 A; 240 V (GL9000-AUS) 0.34 ohm, NFB 33.5 A
240	1	Receptacle output		GL6000-AUS, GL9000-AUS, 50 Hz
240 V	1 - 2	GL6000-AUS, 50 Hz	Main coil R - W: 0.62 ohm	NFB capacity 23 A

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 Kubota D722 family

Part #	Description	Category
32721-58242	Air Filter Inner	air_filter
6C060-99410	Air Filter Outer	air_filter
G3102-8839-0	Air cleaner	air_filter
07916-34041	Auxilary Socket for Fixing Crankshaft Sleeve	auxiliary_socket_for_fixing_crankshaft_sleeve
G3102-8833-0	Battery	battery
G3102-8832-0	V-belt	belt
07909-31661	Connecting Rod Alignment Tool	connecting_rod_alignment_tool
W1062553	Connecting Rod Small End Bushing Tool	connecting_rod_small_end_bushing_tool
G3102-8831-0	Coolant filter	coolant_filter
07916-32011	Flywheel Puller	flywheel_puller
1T021-43560	Fuel Filter	fuel_filter
G3102-8838-0	Fuel filter	fuel_filter
GL9000	Fuel filter cartridge or element	fuel_filter
G3102-8830-0	Gasket	gasket
W1040289	Idle Gear Bushing Replacing Tool	idle_gear_bushing_replacing_tool
W10252400	Injection Pump Pressure Tester	injection_pump_pressure_tester
G3102-8841-0	Oil filter cartridge	oil_filter
HH150-32094	OIL FILTER	oil_filter
HH150-32430	OIL FILTER (NSM)	oil_filter
07916-32032	Oil Pressure Tester	oil_pressure_tester
W1046346	Brush length (Stretch out of the Holder)	other_service
07909-30241	Plastigage	plastigage
07909-31371	Red Check	red_check
G3102-8836-0	Spark plug	spark_plug
07916-09032	Special Use Puller Set	special_use_puller_set
07909-33102	Valve Seat Cutter	valve_seat_cutter

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

6670776 FridayParts $34.18 6669633 FridayParts $141.72 1G820-60022 Amazon FridayParts $68.50 1G820-60012 FridayParts $68.50 1G820-60020 FridayParts $68.50 16851-35012 FridayParts $65.00 15841-74250 FridayParts $43.99 6A320-59210 FridayParts $98.54 LRS02300 FridayParts $98.54 1G023-63010 FridayParts $98.54 16871-03310 FridayParts $21.00 3Pcs FridayParts $9.90 6670465 FridayParts $42.00 16851-22010 FridayParts $35.24 16851-22012 FridayParts $35.24 16851-22015 FridayParts $35.24 16851-22017 FridayParts $35.24 6674172 KuduParts $14.00 ZD22 FridayParts $245.00 15694-65992 FridayParts $18.58 15694-65990 Amazon eBay $15.01 FridayParts $18.58 S81NL FridayParts $18.58 SN1NL FridayParts $18.58 1G687-22010 FridayParts $58.60 67mm KuduParts $31.00 31351-31410 FridayParts $23.99 061700-2990 FridayParts $23.99 16604-52030 FridayParts $34.65 16851-52030 FridayParts $18.95 R1401-51352 FridayParts $18.95 R1401-51350 FridayParts $18.85 16415-65600 FridayParts $14.58 16415-65602 FridayParts $14.58 19026-73260 FridayParts $17.50 19026-732602 FridayParts $17.50 19462-12312 FridayParts $78.50 19462-12310 FridayParts $78.50 16001-53904 FridayParts $57.19 1E231-60011 FridayParts $49.99 6687713 FridayParts $59.50 1E013-63590 FridayParts $20.51 183827 FridayParts $20.51 722D FridayParts $20.51 930D2 FridayParts $20.51 16271-43560 Amazon eBay $18.89 KuduParts $24.00 16851-52033 FridayParts $20.23 6C040-55412 FridayParts $27.20 15248-63590 FridayParts $27.20 6670340 FridayParts $65.00 4230021 FridayParts $38.20 15263-52030 FridayParts $30.04 16871-53002 FridayParts $41.70 6652760 FridayParts $20.00 0.9KW FridayParts $149.00 6C140-59211 FridayParts $149.00 19883-63012 FridayParts $244.90 1661763011 FridayParts $244.90 19883-63010 FridayParts $244.90 16861-51010 FridayParts $438.21 16006-51012 FridayParts $438.21

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

Also used in

Bobcat 320 — Excavator
Bobcat 322 — Excavator
Bobcat 453 — Skid Steer Loader
Bobcat 453F — Skid Steer Loader
Bobcat E20 — Excavator Compact
Bomag BW80AD-2 — Compactor
Bomag BW80ADH-2 — Compactor
Kubota BX1800D — Tractor
Kubota BX1830D — Tractor
Kubota BX1850D — Tractor
Kubota BX1860D — Tractor
Kubota K008 — Excavator Compact

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 D722?

The Kubota D722 engine has an oil capacity of 3.4 liters.

What is the displacement of the Kubota D722?

The Kubota D722 has a displacement of 0.719 liters with 3 cylinders.

Which generators use the Kubota D722 engine?

The Kubota D722 powers 17 generator set(s), including Atlas Copco XAS 38, Atlas Copco XAS 38 Kd, FG Wilson KH9-1S, Fischer Panda Mini-Power Station, Kubota GL 11000.

What is a common problem with the Kubota D722 engine?

A commonly reported issue on generators using the Kubota D722 is: Use or operate the engine on or near any forest-covered, brush-covered land, or grass-covered land.. Fix: The exhaust system must be equipped with a working spark arrester meeting state laws..