Kubota GL 9000 — Specs, Engine, Parts & Maintenance

Service parts for the GL 9000

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required

G3102-8839-0Air filtersee priceAmazon

Fuel system

1 required

GL9000Fuel filtersee priceAmazon

Oil system

1 required

G3102-8841-0Oil filtersee priceAmazon

Belts

1 required

G3102-8832-0Beltsee priceAmazon

Cooling system

1 required

G3102-8831-0Coolant filtersee priceAmazon

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

Specifications

Fuel	Diesel
Frequency	50.0 Hz
Standby power	12 kW
Standby kVA	12
Prime power	8 kW
Oil capacity	3.4 L
Alternator	N/A (2-pole)
Voltage options	220 V, 240 V
Phase	1
Rated current	36.4 A
Power factor	100
Circuit breaker	66 A
Battery group	55B24R
Battery voltage	12 V
Battery quantity	1
Coolant capacity	4.1 L
Max ambient	0 °C
Dimensions (L×W×H)	1281×618×698 mm
Dry weight	295 kg
Sound level	67.0 dBA @ 7 m
Fuel tank	28.0 L
Tank runtime	8.5 hr

Engine

Kubota D722

Oil capacity	3.8 L
Coolant capacity	4.1 L
Displacement	0.719 L
Aspiration	Turbocharged
Rated speed	3600 rpm

Filters for the Kubota D722

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

System	Filter	Description	Cross-references
Oil filter	P550227	Lube Filter, Spin-On Full Flow	KUBOTA 1521332430, KUBOTA 6602136060, LPM 00013505345, WALGAHN-MOTORENTECHN 00811292	KuduParts $18.00 FridayParts $20.25
Oil filter	P550726	Lube Filter, Spin-On Full Flow	KUBOTA 1584132431, KUBOTA HH15232432, NAPA 61334, BALDWIN B227	FridayParts $12.70
Fuel filter	P550012	Fuel Filter, In-Line	KUBOTA 1258143010, KUBOTA 1258143011, BALDWIN BF840-K1, RENAULT VI 0005490862	KuduParts $13.00 FridayParts $15.50
Fuel / water separator	P551039	Fuel Filter, Water Separator Spin-On Twist&Drain	NAPA 3192, BALDWIN BF1257, CLUB CAR 102614001, CLUB CAR 102703401	FridayParts $25.40 KuduParts $97.00

Same engine, other brands

5 brands

The Kubota D722 in this set also powers 14 generator sets sold under 5 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

Brand	Models
Fischer Panda	12mini, AGT-DC 10000, MINI, Mini-Power Station, PMS AGT-DC 10000, Panda 12 mini PMS Digital, Panda PMS AGT-DC 10000
WhisperPower	Piccolo 10, Piccolo 12, Piccolo GV 3
Atlas Copco	XAS 38, XAS 38 KD
Cummins/Onan	QD 6500
FG Wilson	KH9-1S

Maintenance & consumables

for the Kubota D722

Item	Spec	Capacity	Part #	Interval
Air filter	Air cleaner		G3102-8839-0		Amazon eBay
Fuel filter	Fuel filter cartridge or element		GL9000		Amazon eBay FridayParts $15.80
Oil filter	Oil filter cartridge		G3102-8841-0		Amazon eBay
Battery			—	320 hr
Belt	V-belt		G3102-8832-0		Amazon eBay
Coolant	GLYSANTIN PROTECT PLUS/G48; antifreeze content 40% to 60%		—	320 hr
Coolant filter	Coolant filter		G3102-8831-0		Amazon eBay
Oil	SAE 10W-30 / SAE 10W-40; API CC/CD/CF/CG	3.8 l	—	160 hr
Spark plug			—	600 hr

Service intervals

Item	Action	Hours	Months	Notes
Battery	Check	100 hr		First service — Initial 50 hours
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 electrolyte	Check	100 hr
Engine oil	Change	100 hr		First service — Initial change at first 50 hours, then every 100 hours
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
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
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		Adjust when engine is cold
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)
Coolant (L.L.C)	Change		24 mo	KUBOTA genuine long-life coolant has a service life of 2 years

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	0.5	mm
Clearance	Air gap	0.8	mm
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	Generator brush length (allowable limit)	4.5	mm
Clearance	Generator brush length (allowable limit)	7.5	mm
Clearance	Generator brush length (standard)	15.0	mm
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
Clearance	Slip ring outside diameter	64.0	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)
Injection timing	Injection pump timing	0.33 to 0.37 rad (19 to 21° before TDC)	rad
Injection timing	Injection timing	0.30 to 0.33 rad (19 to 21° before TDC)	rad
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	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	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 delivery valve	10 seconds (13.73 to 12.75 MPa)	s	factory spec
Pressure	Fuel tightness of pump element (allowable limit)	13.7	MPa
Pressure	Fuel tightness of pump element (allowable limit)	13.73	MPa
Pressure	Nozzle valve seat tightness	No fuel leak at 12.75	MPa	hold 10 seconds
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	10 seconds or more (88 to 59 kPa)	s
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

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	Clean water (soft water), antifreeze 50/50			3.7 L	GL6000, GL7000; anti-freeze mixing ratio 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
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	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, SAE10W-40, SAE10	Higher than CD class (API)	below 0°C		Below 0 °C (32 °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	SAE10W-30, SAE10W-40, SAE20	Higher than CD class (API)	0°C to 25°C		0 to 25 °C (32 to 77 °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	SAE10W-30, SAE30	Higher than CD class (API)	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-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 and Adjusting Valve Clearance adjustment

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

Tools: Feeler gauge

Remove head cover, glow plugs and timing window cover on flywheel housing.
Align 1TC mark line on flywheel with center of timing window for No.1 TDC.
Check valve clearance with a feeler gauge.
If out of specification, adjust with adjusting screw.

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 Battery maintenance

⚠ Stop engine before disconnecting cables; disconnect negative first, connect positive first.

Open the generator door.
Disconnect the cable from battery negative terminal.
Disconnect the cable from battery positive terminal.
Remove the battery.
Install the new battery.

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.

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	Main coil	R - W; BR - L	GL7000-STD; 0.25 Ω each
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	Main coil	R - W; BR - L	GL7000-USA; 0.28 Ω each
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	Main coil	R - W	GL6000-STD; 0.55 Ω
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	Main coil	R - W	GL6000-AUS; 0.62 Ω
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.

Common questions

What is the power rating of the Kubota GL 9000?

The Kubota GL 9000 is rated 12 kW standby (12.0 kVA).

Which engine powers the Kubota GL 9000?

The Kubota GL 9000 is powered by the Kubota D722 engine.

What fuel does the Kubota GL 9000 use?

The Kubota GL 9000 runs on Diesel.

What is the oil capacity of the Kubota GL 9000?

The Kubota D722 engine in the Kubota GL 9000 has an oil capacity of 3.8 liters.

What is the cooling system capacity of the Kubota GL 9000?

The Kubota GL 9000 cooling system holds 4.1 liters (1.1 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the Kubota GL 9000?

The Kubota GL 9000 is rated 8 kW prime (8 kVA), against 12 kW standby.

How loud is the Kubota GL 9000?

The Kubota GL 9000 is rated at 67.0 dBA at 7 m, per the manufacturer specification sheet.

What is the dry weight of the Kubota GL 9000?

The Kubota GL 9000 has a dry weight of 295 kg (650 lb).

How big is the fuel tank on the Kubota GL 9000?

The Kubota GL 9000 has a 28 liter (7 US gallon) fuel tank, giving about 8.5 hours of runtime.

What voltages is the Kubota GL 9000 available in?

The Kubota GL 9000 is offered in 220 V, 240 V, 1-phase.

What size battery does the Kubota GL 9000 need?

The Kubota GL 9000 uses 1 battery, 12 V each, group 55B24R, per the manufacturer specification sheet.

What alternator does the Kubota GL 9000 use?

The Kubota GL 9000 uses a N/A alternator. It has 2 poles.

Which oil filter part number does the Kubota GL 9000 take?

The Kubota GL 9000 uses oil filter part number G3102-8841-0.

What fuel filter does the Kubota GL 9000 use?

The Kubota GL 9000 uses fuel filter part number GL9000.

What air filter fits the Kubota GL 9000?

The Kubota GL 9000 uses air filter part number G3102-8839-0.

Troubleshooting

Symptoms & remedies

Symptom	Cause	Remedy
After electrical equipment connected, generator does not operate.	Circuit breaker is off.	Turn breaker "ON".
After electrical equipment connected, generator does not operate.	Contact of output terminal and socket is bad.	Reinstall.
After electrical equipment connected, generator does not operate.	Malfunction of electrical equipment	Request repair.
Not generating	Bad contact of brush	Check, cleaning and maintenance of contact face and contact force of brush and slip ring. (Danger: All works should be performed when stopped)
Circuit breaker can not be operated.	Overload	Reduce load.
Circuit breaker can not be operated.	Short circuit of load circuitry connected to output section	Repair load.
Output cannot be obtained. Rotation goes slow. Voltage drops. Breaker turns off.	Initial current is too much. (e.g. motor load)	Reduce load.
Output cannot be obtained. Rotation goes slow. Voltage drops. Breaker turns off.	Overload	Reduce load.
Output cannot be obtained. Rotation goes slow. Voltage drops. Breaker turns off.	Engine indicates loaded condition.
Output cannot be obtained. Rotation goes slow. Voltage drops. Breaker turns off.	Short circuit of generator wiring	Stop immediately. Request for repair.
When the key is turned, the lamp doesn't light on.	Bulb is defective.	Replace
When the key is turned, the lamp doesn't light on.	Component or wiring defect of charging circuit	Check, repair
The water temperature lamp lights on when operating.	Engine overheating.	See "Precaution overheating" in "Radiator" section. (See page 97)
The water temperature lamp lights on when operating.	Water temperature sensor faulty.	Replace the water temperature sensor.
The water temperature lamp lights on when operating.	Water temperature sensor wiring faulty.	Repair the wiring.
The oil pressure lamp lights on when operating.	Insufficient engine oil.	Add engine oil.
The oil pressure lamp lights on when operating.	Lubricating system in trouble.	Check the system.
The oil pressure lamp lights on when operating.	Oil pressure sensor faulty.	Replace the sensor.
The oil pressure lamp lights on when operating.	Oil pressure sensor wiring faulty.	Repair the wiring.
The battery charge lamp lights on when operating.	Poor contact of sub winding.	Connect tightly.
The battery charge lamp lights on when operating.	Sub winding problem.	Check the sub winding.
Not started. Not turned or slow turning.	Battery trouble.	Replacement of battery.
Not started. Not turned or slow turning.	Insufficient battery charge.	Recharge battery.
Not started. Not turned or slow turning.	Slow turning at cold circumstance due to high viscosity of engine oil.	Replace engine oil to D5W40 or D10W30 for cold.
Not started. Not turned or slow turning.	Fuse blown out (Slow blow fuse)	Replace fuse.
Not started. Not turned or slow turning.	Terminal cover open.	Close terminal cover. Fix terminal cover with panel lock bolts.
Normal turning, but not started.	Fuel shortage.	Refuel.
Normal turning, but not started.	Fuel does not flow.	Check fuel filter. If filter is dirty, replace. Check fuel tank. Remove the settled impurities or moisture.
Normal turning, but not started.	Air and water are contained in fuel system.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

Part #	Description	Qty	System
07909-30241	Plastigage		Plastigage	Amazon eBay
07909-31371	Red Check		Red check	Amazon eBay
07909-31661	Connecting Rod Alignment Tool		Connecting rod alignment tool	Amazon eBay
07909-33102	Valve Seat Cutter		Valve seat cutter	Amazon eBay
07916-09032	Special Use Puller Set		Special use puller set	Amazon eBay
07916-32011	Flywheel Puller		Flywheel puller	Amazon eBay
07916-32032	Oil Pressure Tester		Oil pressure tester	Amazon eBay
07916-34041	Auxilary Socket for Fixing Crankshaft Sleeve		Auxiliary socket for fixing crankshaft sleeve	Amazon eBay
1T021-43560	Fuel Filter		Fuel filter	Amazon eBay $9.25 KuduParts $8.00 FridayParts $8.19
32721-58242	Air Filter Inner		Air filter	Amazon eBay $34.95 KuduParts $13.00 FridayParts $15.50 SinoCMP $69.00
412-035-00	Air Filter	1	Air filter	Amazon eBay
412-036-00	Oil Filter	1	Oil filter	Amazon eBay
412-037-00	Fuel Filter	1	Fuel filter	Amazon eBay
412-038-00	Coolant Filter	1	Coolant filter	Amazon eBay
412-039-00	Belt	1	Belt	Amazon eBay
412-040-00	Battery	1	Battery	Amazon eBay
412-041-00	Spark Plug	1	Spark plug	Amazon eBay
6C060-99410	Air Filter Outer		Air filter	Amazon eBay $37.24 KuduParts $21.00 FridayParts $22.74 SinoCMP $69.00
FP1-000410	Impellerpumpe F4B-9	1	Pump	Amazon eBay
FP1-000421	Luftfiltereinsatz 100x60x15mm grob Typ 1	1	Hydraulic filter	Amazon eBay
FP1-000434	Ölfilter für Kubota Typ Z482, D722, D782, V800	1	Hydraulic filter	Amazon eBay
FP1-000446	Entlüftungsadapter Motorwasserpumpe Kubota Motoren H=37mm	1	Pump	Amazon eBay
FP1-000449	Oberteil für Thermostatgehäuse mit Entlüftung	1	Thermostat	Amazon eBay
FP1-000582	Dichtung Wasserpumpe Z482/D722/V800	1	Pump	Amazon eBay
FP1-000589	Dichtung Thermostatgehäuse	1	Thermostat	Amazon eBay
FP1-000597	Wasserpumpe Kubota Z 482 / D722	1	Pump	Amazon eBay
FP1-000604	Thermostatgehäuse Unterteil Z482	1	Thermostat	Amazon eBay
FP1-000637	Kühlwasserschlauch Wasserpumpe Z482 D722	1	Pump	Amazon eBay
FP1-000766	Halterung Impellerpumpe F4B-9	1	Pump	Amazon eBay
FP1-001724	Impellersatz für Pumpe F4B mit O-Ring und Dichtung	1	Pump	Amazon eBay
FP2-000370	Halterung für Kraftstofffilter Typ 025-RAC	1	Hydraulic filter	Amazon eBay
FP2-000371	Sammelbehälter für Kraftstofffilter Typ 025-RAC durchsichtig	1	Hydraulic filter	Amazon eBay
FP2-000373	Kraftstofffiltereinsatz Typ 025-RAC 10 micron inklusive O-Ring	1	Hydraulic filter	Amazon eBay
FP2-003434	Halter Kraftstofffilter für D722	1	Hydraulic filter	Amazon eBay
FP2-006951	Halterung Luftfiltereinsatz 63x63mm	1	Hydraulic filter	Amazon eBay
G3102-8830-0	Gasket	1	Gasket	Amazon eBay
G3102-8831-0	Coolant filter	1	Coolant filter	Amazon eBay
G3102-8832-0	V-belt	1	Belt	Amazon eBay
G3102-8833-0	Battery	1	Battery	Amazon eBay
G3102-8836-0	Spark plug	1	Spark plug	Amazon eBay
G3102-8838-0	Fuel filter	1	Fuel filter	Amazon eBay
G3102-8839-0	Air cleaner	1	Air filter	Amazon eBay
G3102-8841-0	Oil filter cartridge	1	Oil filter	Amazon eBay
GL9000	Fuel filter cartridge or element		Fuel filter	Amazon eBay FridayParts $15.80
HH150-32094	OIL FILTER		Oil filter	Amazon eBay $19.99 NAPA $9.64 KuduParts $17.00 FridayParts $18.90
HH150-32430	OIL FILTER		Oil filter	Amazon Amazon eBay $39.49 eBay $17.99 NAPA $9.64 KuduParts $11.00 FridayParts $13.16
P02-004	Air filter	1	Air filter	Amazon eBay
P02-005	Oil filter	1	Oil filter	Amazon eBay
P02-006	Fuel filter	1	Fuel filter	Amazon eBay
P02-007	Belt	1	Belt	Amazon eBay
P02-008	Belt	1	Belt	Amazon eBay
P02-009	Battery	1	Battery	Amazon eBay
P02-010	Spark plug	1	Spark plug	Amazon eBay
W10252400	Injection Pump Pressure Tester		Injection pump pressure tester	Amazon eBay
W1040289	Idle Gear Bushing Replacing Tool		Idle gear bushing replacing tool	Amazon eBay
W1062553	Connecting Rod Small End Bushing Tool		Connecting rod small end bushing tool	Amazon eBay
1535981	TRACK A 304/305		Service part / kit	Amazon eBay
W1046346	Brush length (Stretch out of the Holder)	1	Service part / kit	Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

Rating	Load	L/h	gal/h
	100%	2.4	0.63
Prime	25%	1.6	0.4
Prime	50%	2.3	0.6
Prime	75%	3.4	0.9
Prime	100%	5.3	1.4
Standby	25%	3.1	0.8
Standby	50%	4.0	1.1
Standby	75%	4.9	1.3
Standby	100%	6.1	1.6

Available documents

Spec sheet — GL-Series (Kubota)Spec sheet — New Unit....GL Spec sheet (Kubota)Operator's manual — 59890 (Kubota)Operator's manual — Kubota-GL9000-Operators-Manual (Kubota)Owner's manual — 2950 gl7000 operatorsm (Kubota)Owner's manual — 635adac789d0116565862577 Kubota GL11000 Operators Manual (Kubota)Owner's manual — GL-Series-GL-7000-GL11000-Operators-Manual (Kubota)Owner's manual — Kubota LowBoy II Diesel Generator GL7000 GL11000 GL Series - Operators Manual (Kubota)Parts manual — Kubota 50Hz Generator SP (Kubota)Service manual — 635adac789d0113e87862586 Kubota GL-Series Service Manual (Kubota)Service manual — G8D GL9000A KUBOTA NEW (Kubota)Service manual — Kubota LowBoy II Diesel Generator GL7000 GL11000 GL Series - Service Manual (Kubota)

This page was generated from the 12 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Kubota GL 9000 Generator Set

Service parts for the GL 9000

Air intake

Fuel system

Oil system

Belts

Cooling system

Specifications

Engine

Filters for the Kubota D722

Same engine, other brands

Maintenance & consumables

Service intervals

Service specifications

Recommended fluids

Procedures

Voltage reconnection

Common questions

Troubleshooting

Symptoms & remedies

Parts

Fuel consumption

Available documents