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Kubota Z482 Engine

Name: Kubota Z482 Engine
Brand: Kubota

The Kubota Z482 is a 0.48 L 2-cylinder naturally aspirated engine rated at 3000 rpm, producing up to 8.3 kW. It powers generator sets from Cummins/Onan, Denyo, FG Wilson, Fischer Panda, Generac, Kubota, MQ Power, Paguro and WhisperPower, including the MDKB, DA-6000SS, KH6-1S and 8000i PMS. It holds 3.8 L (1.0 gal) of oil and 3.8 L (1.0 gal) of coolant.

Also known as: Kubota® Z482, Z482

Part of the Kubota Z482 engine family — 4 variants share parts & fitment.

0.479 L

Displacement

Cylinders

3000 rpm

Rated speed

8 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 Z482

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

Air intake

1 required

1522211223Air filter$24.99eBay

Fuel system

1 required

1522143081Fuel filter$37.58eBay

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

Engine specifications

Oil capacity	3.8 L
Coolant capacity	3.8 L
Displacement	0.479 L
Cylinders	2
Aspiration	naturally aspirated
Rated speed	3000 rpm
Gross power	8 kW

Generator sets powered by this engine

Shared across brands: Cummins/Onan, Denyo, FG Wilson, Fischer Panda, Generac, Kubota, MQ Power, Paguro, WhisperPower

Cummins/Onan MDKBDenyo DA-6000SSFG Wilson KH6-1S Fischer Panda 8000i PMSGenerac MLTSKubota GL 7000 Kubota GL6000 Kubota GL6000-AUS Kubota GL6000-STD Kubota GL6000A-AU-B Kubota GL6000D-AU-B Kubota GL7000-STD Kubota GL7000-USA Kubota GL9000A-AU-B Kubota J107 MQ Power DA-7000SS MQ Power DA7000SS Paguro 4000 WhisperPower Piccolo 8

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)
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.
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.
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.
UNDERVOLTAGE 13
Fix: Reduce the number of connected appliances, especially when air conditioners and battery chargers are running.
UNDERFREQUENCY—Engine governor unable to maintain rated frequency CODE NO. 15
Fix: 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.) 3. Remove any blockage in the combustion air inlet (front grille) or exhaust system. 4. Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction. 5. Drain and/or replace the fuel filter (Page 16) and prime the fuel system (Page 8). 6. Drain and/or replace fuel supply system filters and prime the fuel system (Page 8).
Underfrequency 15
Fix: Check engine speed, loads, governor actuator operation, fuel supply, control plugs fully seated, quad leads fully seated in connector to control, quad winding resistance

Compiled from service & troubleshooting documentation across every generator set that uses the Kubota Z482.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Cleaning Secondary Air Filter Element, Cleaning Primary Air Filter Element		G3102-8839-0	200 hr	Amazon eBay
Fuel filter			149-2106	50 hr	Amazon $15.99 eBay $34.99 KuduParts $68.00
Oil filter			122-0810	50 hr	Amazon $28.17 eBay $12.39
Battery	12V x 27Ah/5Hr		44B19R	50 hr	eBay
Belt			511-0197	100 hr	Amazon eBay
Coolant		50.0 L	—	3650 hr
Coolant filter	Changing Coolant, Remedies for Rapid Coolant Loss		G3102-8831-0	200 hr	Amazon eBay
Oil	Checking Oil Level and Adding Engine Oil, Changing Engine Oil, Replacing the Oil Filter Cartridge	50.0 %	—	200 hr
Spark plug	Replace as needed based on operating conditions		G3102-8836-0		Amazon eBay

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
Check Engine Oil Level	Check	8 hr
Drain Water from Fuel Filter	Drain	8 hr
Engine oil level	Check	8 hr		Every Day/8 Hrs (Table 4-1)
Exhaust system	Inspect	8 hr		Look over entire exhaust system and listen for leaks every startup and after every eight hours of operation
Fuel Filter	Drain	8 hr
Fuel Filter Water	Drain	8 hr
General Inspection	Check	8 hr		Daily, 8-Hr; includes Oil Level, Coolant Level, Fuel System, Exhaust System, Battery, and Sea Water Strainer Checks.
General Inspection	Inspect	8 hr		Includes inspection of oil level, coolant level, fuel system, exhaust system, batteries and battery connections; before first start of day and after every 8 hours
General Inspection (Oil Level, Coolant Level, Fuel System, Exhaust System, Battery, Sea Water Strainer)	Check	8 hr		Every day, all models (MDKBH, MDKBJ, MDKBW, MDKB & MDKD, MDDCX)
General Inspection (oil, coolant, fuel, exhaust, batteries)	Inspect	8 hr		every day / before first start of the day
Generator set	Inspect	8 hr		General Inspection before first start of the day and after every 8 hours of operation; includes oil level, coolant level, fuel system, exhaust system, batteries and battery connections
Change Engine Oil and Oil Filter - All except MDKBT & MDKBU	Change	50 hr		First service — after first 50 hrs, then every 200 hrs/year
Change Engine Oil and Oil Filter - Only MDKBT & MDKBU	Change	50 hr		First service — after first 50 hrs, then every 200 hrs/year
Engine Oil and Oil Filter (All except MDKBT & MDKBU) - after first 50 hours	Change	50 hr		First service — Break-in oil change; also change the oil and oil filter after the first 50 hours of operation on a new or re-built engine.
Engine Oil and Oil Filter (Only MDKBT & MDKBU) - after first 50 hours	Change	50 hr		First service
Engine oil and oil filter - all except MDKBT & MDKBU	Change	50 hr		First service — After first 50 hours of operation; then per Table 4-1
Engine oil and oil filter - only MDKBT & MDKBU	Change	50 hr		First service — After first 50 hours of operation; then per Table 4-1
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 & Oil Filter	Change	200 hr	12 mo	First service — After first 50 hours
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	1 mo	First service — See battery manufacturer's recommendations
Battery and Battery Connections	Inspect	100 hr	1 mo	See battery manufacturer's recommendations.
Check V-Belt Tension	Check	100 hr		check for slippage, cracking and wear
Engine Oil and Oil Filter (All except MDKBT & MDKBU)	Change	100 hr	1 mo	First service — Perform twice as often when using high sulfur fuel.
Engine oil	Change	100 hr		First service — thereafter
Fan belt	Check	100 hr		Damage, wear and tension
Fuel Filters	Drain	100 hr	1 mo	Every Month / 100 Hrs
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
Inspect Battery and Battery Connections	Inspect	100 hr		monthly
Siphon Break	Check	500 hr	12 mo	Monthly, 100-Hr
Siphon Break	Inspect	100 hr	1 mo	Every Month / 100 Hrs
Water from Fuel Filter	Drain	100 hr	1 mo	Every Month/100 Hrs
Water in Fuel Filter	Drain	100 hr		Every Month / 100 Hrs
Zinc Anode	Inspect	500 hr	1 mo	Replace as recommended.
Zinc Anode	Replace	500 hr	12 mo	Monthly, 100-Hr; Model MDKAU does not have a zinc anode to replace.
Brushes & Slip Rings	Check	200 hr		Yearly, 200 Hrs (MDKBH, MDKBJ, MDKBW only); must be performed by trained mechanic; not applicable to other listed models (—)

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	V-Belt Tension Deflection	0.4	inch (10 mm) @ 20 lbs (10 kg)
Clearance	V-belt deflection	3/8	inch (10 mm) at 20 lbs (10 kg) applied
Clearance	V-belt deflection at 20 lbs (10 kg)	3/8 inch (10 mm)	in (mm)	tension check at middle of pulley span
Clearance	V-belt deflection at middle of pulley span	3/8 inch (10 mm)		with 20 lbs (10 kg) applied
Clearance	Valve Lash (cold) - D1105/V1505/V2003M/V2403M	0.0071-0.0087	in (0.18-0.22 mm)	cold
Clearance	Valve Lash (cold) - V3300-E2B	0.009-0.010	in (0.23-0.27 mm)	cold
Clearance	Valve recessing (intake and exhaust)	0.10 protrusion to 0.10 recessing	mm
Compression	Compression Ratio (MDKAV/MDKAW/MDKAZ)	22:1
Compression	Compression Ratio (MDKBD/MDKBE/MDKBF)	23:1
Gap	Fan belt deflection	7.0 to 9.0	mm	at 98 N (10 kgf, 22 lbf)
Gap	V-belt deflection	0.4	inch (10 mm)	20 pounds (10 kg) applied to middle of pulley span
Injection timing	Fuel Injection Timing	12 deg BTDC	deg BTDC
Injection timing	Fuel Injection Timing	13.5-15 deg BTDC	deg BTDC
Injection timing	Fuel Injection Timing	14.25-15.75 deg BTDC	deg BTDC
Injection timing	Fuel Injection Timing	14.75-16.25 deg BTDC	deg BTDC
Injection timing	Fuel Injection Timing	15.5 - 17.5	° BTDC
Injection timing	Fuel Injection Timing	18° – 20°	BTDC
Injection timing	Fuel Injection Timing - D1105	14.75-16.25	° BTDC
Injection timing	Fuel Injection Timing - V1505	14.25-15.75	° BTDC
Injection timing	Fuel Injection Timing - V2003M	13.5-15	° BTDC
Injection timing	Fuel Injection Timing - V2403M	13.5-15	° BTDC
Injection timing	Fuel Injection Timing - V3300-E2B	12	° BTDC
Injection timing	Fuel injection timing	12	degrees BTDC
Injection timing	Fuel injection timing	14.5	degrees BTDC
Injection timing	Fuel injection timing	16	degrees BTDC
Injection timing	Fuel injection timing	16.5	degrees BTDC
Injection timing	Fuel injection timing	18 - 20	degrees BTDC	timing marks line up at 19 degrees BTDC
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 cable gauge	1	AWG	total cable length 22 ft (6.7 m); approx. diameter 9.43 mm
Other	Battery cable gauge	1/0	AWG	total cable length 30 ft (9.1 m); approx. diameter 9.46 mm
Other	Battery cable gauge	2	AWG	total cable length 18 ft (5.5 m); approx. diameter 7.42 mm
Other	Battery cable gauge	3	AWG	total cable length 14 ft (4.3 m); approx. diameter 6.61 mm
Other	Battery cable gauge	4	AWG	total cable length 10 ft (3 m); approx. diameter 5.88 mm
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	Compression Ratio	22.8:1
Other	Compression Ratio	24.3:1
Other	Compression Ratio	24:1
Other	Compression ratio	22.5:1
Other	Compression ratio	22:1
Other	Compression ratio	23:1
Other	Coolant mixing ratio	50/50	%	premix 50% LLC with 50% clean soft water
Other	Firing order (clockwise rotation)	1-2-3

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	50/50 water/ethylene glycol			2.1 L	MDKBH; also stated as 2.2 Qt
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	Fleetguard ES Compleat / EG Premix antifreeze (ethylene glycol based)				Purple coloured viscous liquid; boiling point 107 C, flash point 121 C.
Coolant	Fleetguard ES Compleat and EG Premix (ethylene glycol based)
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
Coolant	50/50 ethylene glycol/water	ASTM D5345 (prediluted) or ASTM D4985 (concentrated, 40-60% quality water)	above -37°C		Protects to -34°F (-37°C)
Coolant	50/50 mixture of water and ethylene glycol	ASTM D5345 for 50/50 prediluted coolant or ASTM D4985 for concentrated coolant with 40% to 60% quality water	above -37°C		Protection from freezing down to -34 F (-37 C); use fresh low-mineral water, distilled best. Coolant capacity: 4.0 liter MDKBK/MDKBL; 5.0 liter MDKBM/MDKBN; 7.6 liter MDKBP/MDKBR/MDKBS; 13.7 liter MDKBT/MDKBU
Coolant	50/50 mixture of water and ethylene glycol antifreeze, fully formulated with rust inhibitors and coolant stabilizers	ASTM D5345 for 50/50 prediluted coolant or ASTM D4985 for concentrated coolant with 40% to 60% quality water	above -37°C		50/50 mixture gives protection from freezing down to -34 F (-37 C); use fresh water low in minerals and corrosive chemicals (distilled best)
Coolant	Ethylene glycol antifreeze, 50/50 mixture of water and ethylene glycol	ASTM D5345 for 50/50 prediluted coolant or ASTM D4985 for concentrated coolant with 40% to 60% quality water	above -37°C		Provides protection from freezing down to -34 F (-37 C). Use fresh water low in minerals; distilled water is best. Fully formulated with rust inhibitors and coolant stabilizers.
Coolant	Ethylene glycol antifreeze, fully formulated with rust inhibitors and coolant stabilizers; 50/50 mixture of water and ethylene glycol		above -37°C	2.1 liter	Protection from freezing down to -34°F (-37°C); use fresh water low in minerals, distilled best
Coolant	ethylene glycol antifreeze, 50/50 mixture with water		above -37°C		Good to -34F (-37C)
Coolant	ethylene glycol antifreeze, 50/50 mixture with water for freeze protection to -34°F (-37°C)	ASTM D5345 (50/50 prediluted) or ASTM D4985 (concentrated, 40-60% quality water)	above 37°C		distilled water best
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	15W40			2.1 L	MDKBH; also stated as 2.2 Qt. Shipped with 15W40 engine oil.
Engine oil	API CH-4 or better, SAE 15W-40 recommended year-round	API/SAE			Synthetic motor oil not recommended
Engine oil	API Service Category CI-4 or better; SAE 15W-40 recommended year-round	API			choose viscosity per Figure 3-1 ambient chart
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	Multigrade oils such as SAE 15W-40 recommended for year-round use; choose SAE viscosity grade per ambient temperature (Figure 3-1)	API Service Category CI-4 or better			4.0 L for MDKBK/MDKBL; 4.3 L for MDKBM/MDKBN; 7.6 L for MDKBP/MDKBR; 12 L for MDKBS; 10.4 L for MDKBT/MDKBU
Engine oil	Premium Blue E 15W40			2.1 L (2.2 qt)	Lubricant oil - Premium Blue E 15W40
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	SAE 15W-40 (multi-grade recommended for year-round use)	API CF, CF-4, CG-4, CH-4 or CI-4			Emissions-regulated areas: CF, CF-4, CG-4, CH-4 or CI-4 with low sulfur or ultra low sulfur fuel. Non-regulated areas with high sulfur fuel: CF class recommended; if CF-4/CG-4/CH-4/CI-4 used, change oil and oil filter twice as often.

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
1	One blink	Shutdown due to high engine temperature	Shutdown	Open sea valve; clean sea water strainer; check coolant level and repair leaks; check/replace raw water hoses; readjust a loose pump belt (p. 4-9); replace worn raw water impeller (p. 4-10); clean heat exchanger (p. 4-12); check through-hull; drain/clean cooling system (p. 4-6); replace coolant thermostat (p. 4-8); tighten coolant sender E2 ring terminal; test/replace sender E2; check continuity Pin 9 to E2
12	Overvoltage	Output voltage jumped to more than 125% of rated for 75 ms or more than 115% of rated for 3 s after voltage regulation enabled	Shutdown	See an authorized Onan service representative.
13	Undervoltage	Output voltage fell to less than 90% of rated for 5 seconds after voltage regulation enabled	Shutdown	Turn line breaker OFF, disconnect PTO, reduce loads; fill fuel tank; check fuel fittings and filters; replace fuel filters.
14	Overfrequency	Frequency jumped to more than 70 Hz for 40 ms or more than 2% over nominal for 6 seconds	Shutdown	Reset breaker after starting, tighten fuel fittings, prime fuel system
15	Underfrequency	Frequency fell to less than 90% of nominal for more than 8 seconds during normal operation	Shutdown	Turn breaker OFF, de-energize PTO, reduce loads; fill fuel; prime fuel system; remove air/exhaust blockages; check fuel fittings; replace fuel filters; check for contaminated fuel.
17	Overprime	Prime mode exceeded 5 minutes	Shutdown	Remove object holding control switch in prime position
2	Two blinks	Two blinks indicate shutdown due to low oil pressure.	Shutdown	Check oil level; tighten sender E1 ring terminal; check sender E1 resistance and replace if necessary; check continuity Pin 10 to E1; replace sender with a gauge and service the engine lubrication system if oil pressure is less than 14 psi (98 kPa)
22	Governor Overload	Maximum allowable time at full-duty cycle was exceeded	Shutdown	Reduce the number of appliances running at the same time; check the fuel tank and fill; remove any blockage in the combustion air inlet or exhaust system; check fuel fittings for leaks and reprime; replace the fuel filters and reprime.
23	Faulty Oil Pressure Sender	Controller sensed grounded sender	Warning	Tighten the ring terminal on sender E1; check continuity between Pin 10 and ring terminal E1-1; test sender E1 and replace as necessary; replace the genset controller
24	Faulty Temperature Sender	Controller sensed open sender	Warning	Tighten the ring terminal on sender E2; check continuity between Pin 9 and ring terminal E2-1; test sender E2 and replace as necessary; replace the genset controller
27	Loss of Voltage Sense	The genset Controller lost VAC sensing during normal voltage regulation when the field was functioning normally and frequency was at least 40 Hz	Shutdown	See an authorized Onan service representative.
29	High Battery Voltage	During startup the genset Controller sensed that battery system voltage was greater than 19.2 volts	Warning	Check battery voltage, battery connections, battery charge rate.
3	Three blinks	Three blinks indicate shutdown requiring service by trained and experienced service personnel.	Warning	See Troubleshooting in the Operator's Manual
32	Starting Fault	The genset Controller could not detect cranking speed (quadrature zero crossings) for 3 seconds	Shutdown	Have the propulsion engines running while trying to start the genset; service the battery; change to oil of proper viscosity for the ambient temperature.
35	Control Card Failure–EE	Microprocessor EEPROM error during self-test	Shutdown	Verify fault.
36	Unknown Shutdown	The genset Controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds, though not by genset or engine control action	Shutdown	Reduce the number of loads on the genset; check fuel level and refill; prime the fuel system for at least 30 seconds; check fuel fittings for leaks and reprime; replace the fuel filters and reprime.
37	Invalid Set Configuration	The genset controller is not configured properly for the genset	Warning	See an authorized Onan service representative.
38	Field Overload	High field voltage induced by high rotor temperature or low power factor loads	Shutdown	Remove generator air flow blockages; reduce appliances; have air conditioners and other appliances checked.
4	Overcrank	Shutdown due to a failure to start within the time allowed for cranking	Shutdown	Push line circuit breaker OFF; check fuel tank and fill; remove combustion air or exhaust blockages; open closed fuel valves; prime the fuel system at least 30 seconds; service the battery; check all fuel filters and fittings and reprime; replace fuel filters; change to proper oil viscosity; conduct fuel pump test; inspect glow plugs; service fuel injectors and worn engine
41	Grounded Rotor	F+ grounded	Shutdown	Verify fault.
42	Processor Failure	Microprocessor ROM error during self-test	Shutdown	Verify fault.
43	Processor Failure	Microprocessor RAM error during self-test	Shutdown	Verify fault.
45	Speed Sense Lost	Controller lost speed sense (quadrature zero crossings) for 0.25 seconds after start disconnect	Shutdown	See an authorized Onan service representative.
46	Genset Overload	The genset Controller shutdown the genset because engine load exceeded 135 percent of genset rating for 10 seconds	Shutdown	Reduce the number of loads on the genset.
48	Processor Failure	Controller unable to sense field voltage	Shutdown	Verify fault.
5	Warning—Shutdown Due to Vessel CO	Shutdown due to Vessel CO	Warning	Get everyone out into fresh air immediately and seek medical attention.
57	Overprime	A local or remote control switch was held in the Prime position for more than 5 minutes	Warning	Remove object holding switch in prime position, replace faulty control switch
58	High Exhaust Temperature	Exhaust temperature rises because of loss of water	Shutdown	Reconnect/replace raw water hoses, replace impeller
59	Low Coolant Level	The engine coolant level fell below the optional coolant level sensor	Warning	Add coolant, repair leaks
61	External Shutdown	The generator set was shut down by a fire suppression system or other external control	Shutdown	Make necessary repairs and reset the external control which shut down the genset
7	Seven blinks	Water stops flowing	Shutdown	Open the sea cock; check for and clean a blocked sea water strainer; check for kinked or leaking hoses; check/replace the raw water impeller; check the hull through-hull fitting for blockage.
A	Engine fault	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	Engine overspeed or engine underspeed	Shutdown	Check connection on W terminal of DC Charge Alternator (MLTS)—WH/VI to pin-9 or Engine ECU (MLTS-K) on Power Zone controller. Inspect function of DC charge alternator. Inspect tension of DC charge alternator 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 (MLTS)—WH/VI to pin-9 or Engine ECU (MLTS-K) on Power Zone controller. Inspect function of DC charge alternator. Inspect tension of DC charge alternator drive belt. Contact Generac Mobile.
C	Fail to crank	Fail to crank (AUTO mode only)	Warning	See General Troubleshooting — fail to crank.
Code No. 5	Warning - Shutdown due to Vessel CO	Shutdown occurring due to the vessel CO detector	Warning	All status indicator lights in the control circuit will also blink the fault code. See Troubleshooting Chapter of the Operator Manual.
Code No. 61	Emergency Shutdown	Shutdown occurring due to external emergency shutdown device	Shutdown	All status indicator lights in the control circuit will also blink the fault code. See Troubleshooting Chapter of the Operator Manual.

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 High-Idle Speed adjustment

⚠ Keep your hands away from the engine belt and pulleys.

⚠ The actuator could overheat if the battery is left on more than 10 minutes.

⚠ Be prepared to clamp off supply and return fuel lines to stop the engine.

Tools: strobe or injector clamp-on tachometer, 12 volt battery, battery switch

Adjust the speed control lever stop.
Measure engine speed with a strobe or injector clamp-on type tachometer.
Remove the front and top access doors and loosen the front/left side panel assembly for access to the speed adjusting screw.
Disconnect the actuator leads and connect a 12 volt battery to the actuator terminals using a battery switch.
Switch the battery on, start the genset, measure engine speed (rpm) and stop the engine by switching off the battery.
Loosen the lock nuts on the two bottom screws and back out the clamping screw if speed is not between 3300 and 3400 rpm.
To increase speed turn the speed adjusting screw in 1 turn clockwise; to decrease turn it out 1 turn counterclockwise.
Repeat until high-idle speed is between 3300 and 3400 rpm and set the lock nut.
Run the clamping screw in by hand until snug, back it out 1-1/2 turns and set the lock nut.

Adjusting Speed Control Lever Stop adjustment

⚠ Accidental or remote starting can cause severe personal injury; disconnect the negative battery cable.

Remove the front and top access doors and loosen the front/left side panel assembly so it can swing left.
Loosen the stop screw locknut and back the screw out a few turns.
Turn the stop screw in until it just makes contact and set the locknut.

Adjusting V-Belt Tension adjustment

⚠ Accidental or remote starting can cause severe personal injury or death.

Disconnect the negative cable at the battery.
Remove the belt guard or enclosure top panel and access doors.
Loosen the alternator pivot bolt first, then the adjusting bracket bolt on top.
Pivot the alternator out to tighten belt tension.
Check tension by applying 20 pounds (10 kg) to the middle of the pulley span.
Tighten alternator bolts when deflection is 3/8 inch (10 mm), secure guard and reconnect cables, negative last.

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.

Adjusting Valve Lash adjustment

⚠ Do not use the fuel injection timing marks when adjusting valve lash.

Rotate the engine clockwise (looking from the front) until the intake valve push rod just stops moving down (valve closed).
Turn the engine one half turn more.
Adjust lash for both intake and exhaust valves of that cylinder.
Repeat this procedure for the other cylinder.

Adjusting Voltage Using Control Switch adjustment

Tools: separate voltmeter

Start the genset and let voltage and frequency stabilize for 5 to 10 seconds with all loads disconnected.
Rapidly press START 6 times during the first minute after startup to enter voltage adjust mode.
To adjust voltage up, press and quickly release START (about 0.6 volts per press).
To adjust voltage down, press and hold START for about 2 seconds (about 0.6 volts each press).
Wait about 20 seconds for the amber lamp to stop blinking, then press STOP to save the adjustment.
Restart the genset and check voltage.

Adjusting Voltage Using Digital Display adjustment

Start generator set and let voltage and frequency stabilize 5 to 10 seconds; disconnect all loads.
Rapidly press START 6 times during the first minute after startup to enter voltage adjust mode.
Press and quickly release START to increase voltage approximately 0.6 volts per press.
Press and hold START about 1 second to adjust voltage down.
Wait about 20 seconds for status to change from Volt Adj to Running, then press STOP to save.
Restart the generator set and check voltage; recalibrate AC voltage on the digital display.

Adjusting Voltage Using Optional Digital Display adjustment

Tools: Separate voltmeter

Start the genset and let voltage and frequency stabilize for 5 to 10 seconds; make sure all loads have been disconnected.
Rapidly press START 6 times during the first minute after startup to put the genset controller into voltage adjust mode.
To adjust voltage up, press and quickly release START; voltage increases approximately 0.6 volts each press and release.
To adjust voltage down, press and hold START for about 1 second; voltage decreases approximately 0.6 volts each press and release.
Wait about 20 seconds for the Display to indicate a Status change from Volt Adj to Running, then press STOP to stop the genset and save the adjustment.
Restart the genset and check voltage.
Recalibrate AC Voltage on the Digital Display as instructed in the Operator's Manual.

Changing Frequency adjustment

The genset control box has jumper leads marked HZ SEL and 60 HZ.
Connect for 60 HZ; disconnect for 50 HZ.
Apply the appropriate reconfiguration label over the 'As Manufactured' block on the nameplate.

Changing Generator Set Frequency adjustment

⚠ When changing frequency, make sure the line circuit breakers are suitable for the new output.

Remove the control box cover.
Connect J5 to P6 for 60 Hz.
Disconnect J5 from P7 for 50 Hz.
Apply the appropriate reconfiguration label.
Replace the control box cover.
Check and adjust voltage as necessary after the frequency has been changed.

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.

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
		50 Hz: Disconnect J5 from P7	J5, P6, P7	Frequency selection jumper leads in the genset control box
		60 Hz: Connect J5 to P6	J5, P6, P7	Frequency selection jumper leads in the genset control box
		HZ SEL / 60 HZ jumper leads in the control box	HZ SEL, 60 HZ	Connect for 60 Hz; disconnect for 50 Hz. Apply the appropriate reconfiguration label. Generator reconnection per schematic on Page A-2.
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 Z482 family

Part #	Description	Category
1556211081	Air Cleaner	air_filter
3415013964	Element air cleaner	air_filter
8742031004	Bracket air cleaner	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
W1053554	Battery	battery
1980572531	Fan Belt	belt
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
G3102-8838-0	Fuel filter	fuel_filter
GL6000	Fuel filter cartridge or element	fuel_filter
GL9000	Fuel filter cartridge or element	fuel_filter
G3102-8830-0	Gasket	gasket
0207008000	HEX. NUT	hex_nut
0199900550	Drain Hose	hose
0199900650	Hose	hose
0199900700	Drain Hose	hose
0605515003	Hose Band F-30	hose
0605515006	Hose Band F-50	hose
0605515021	Hose Band F-55	hose
0605515094	Hose Band F-12	hose
0605515111	Hose Band F-34	hose
1612036203	Hose air cleaner	hose
7222016304	Hose	hose
8742032003	Hose Air cleaner	hose
D2312500003	Radiator Hose	hose
D2312500103	Radiator Hose	hose
D2322400004	Hose Joint	hose
W1040289	Idle Gear Bushing Replacing Tool	idle_gear_bushing_replacing_tool
W10252400	Injection Pump Pressure Tester	injection_pump_pressure_tester
7000015241	Cartridge Oil Filter	oil_filter
G3102-8841-0	Oil filter cartridge	oil_filter
HH150-32094	OIL FILTER	oil_filter
HH150-32430	OIL FILTER (NSM)	oil_filter
W1037215	Engine Oil Filter Cartridge	oil_filter
07916-32032	Oil Pressure Tester	oil_pressure_tester
0010108050	Hex Head Bolt	other_service
0012410020	Hex Head Bolt	other_service
0016906016	Hex Head Bolt	other_service
0016906025	Hex Head Bolt	other_service
0016908030	Hex Head Bolt	other_service
0030006000	Hex Nut	other_service
0042806000	Plain Washer	other_service
0050403020	Spring Pin	other_service
0150000018	O Ring A P18	other_service
0207010000	Hex Nut	other_service
0207206000	Hex Nut	other_service
0222600340	Rubber Cushion	other_service
031108160	PLAIN WASHER	other_service
0601806640	FUSE, 65A	other_service
0602012750	Radiator	other_service
0602081104	Cap reserve tank	other_service
0605000460	Rubber Mount	other_service
0605010503	Snap Pin SS-P8	other_service
0802011104	Plug	other_service
0802081403	Reserve Tank	other_service
12567	Canopy HardHat®	other_service
1502025103	Drain Joint oil	other_service
1622014103	Drain Joint water	other_service
1622082104	Bracket reserve tank	other_service
16226361032	Hex Head Bolt	other_service
162520004	Rotary Solenoid	other_service
16676-8917-1		other_service
1992636004	Arm Solenoid	other_service
1AEACAFAP0380		other_service
505015300	Snap Pin SS-P6	other_service
7085419004	Rubber Suspension	other_service
8702014004	Insulator	other_service
8745112003	Engine Foot	other_service
A5485500004		other_service
A592520004	Engine	other_service
D235630004	Governor Rod	other_service
G3907-8830-0	Danger/warning/caution label (2)	other_service
G3907-8832-0	Danger/warning/caution label (1)	other_service
W1020554	Damage in Electric Wiring and Loose Connections	other_service
W1022492	Intake and exhaust valve clearance (Cold)	other_service
W1024734	Ball Bearing	other_service
W10411400	Radiator Cap	other_service
07909-30241	Plastigage	plastigage
07909-31371	Red Check	red_check
G3102-10011	Rotor Pulling Out Bolt (for GL6000, GL7000)	rotor_pulling_out_bolt
F1379	Siphon Break Kit	siphon_break
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

16851-35012 FridayParts $65.00 15841-74250 FridayParts $43.99 16853-99355 FridayParts $72.00 16853-99366 FridayParts $72.00 16851-22010 FridayParts $35.24 16851-22012 FridayParts $35.24 16851-22015 FridayParts $35.24 16851-22017 FridayParts $35.24 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 16604-52030 FridayParts $34.65 16851-52030 FridayParts $18.95 R1401-51352 FridayParts $18.95 R1401-51350 FridayParts $18.85 19026-73260 FridayParts $17.50 19026-732602 FridayParts $17.50 3Pcs FridayParts $9.90 16001-53904 FridayParts $57.19 17214-72020 KuduParts $13.00 1E231-60011 FridayParts $49.99 16271-43560 Amazon eBay $18.89 KuduParts $24.00 16851-52033 FridayParts $20.23 6C040-55412 FridayParts $27.20 15248-63590 FridayParts $27.20 1E411-60012 SinoCMP $79.00 4230021 FridayParts $38.20 16871-53002 FridayParts $41.70 16861-72020 KuduParts $7.00 16001-51012 FridayParts $345.00 16001-51010 FridayParts $345.00 15263-12370 Amazon eBay FridayParts $13.99 12582-12110 FridayParts $152.00 30-60037-00 FridayParts $189.99 30-60007-00 FridayParts $189.99 15841-39010 Amazon eBay FridayParts $9.50 15231-39010 FridayParts $9.50 15231-39013 FridayParts $9.50 12691-43010 KuduParts $7.00 13351-43010 KuduParts $7.00 16851-65510 FridayParts $25.00 15852-12310 FridayParts $95.99 1G311-43380 KuduParts $17.00 12597-74110 FridayParts $52.60 HH1J0-32430 FridayParts $32.99 23452GT FridayParts $11.00 52808GT FridayParts $11.00 GS-2668 FridayParts $9.99 GS-3268 FridayParts $10.82 GS-2669 FridayParts $11.00 GS-3369 FridayParts $11.00 GS-4069 FridayParts $10.99 Z-34/22 FridayParts $11.00 Z-45/22 FridayParts $11.00 H1600-53000 SinoCMP $45.00 16001-53000 FridayParts $55.78 15831‑43380 KuduParts $13.00 15221-65510 FridayParts $29.50

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

Filters for this engine

Air filter: Kubota 1522211223 Kubota RG15842930 Donaldson P102745 Donaldson P822686 Wix 46270 Ac Delco A527C Wix 46449
Fuel filter: Kubota 1522143081 Donaldson P557440 Donaldson P550127 Wix 33352 Ac Delco TP993 Wix 33390 Ac Delco TP1200

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

Also used in

Carrier Transicold COMFORTPRO — Generator Set
Carrier Transicold SUPRA — Refrigeration Unit
Hitachi 08 — Construction Equipment
Hitachi EX8 — Excavator Compact
Hitachi EX8-2 — Excavator Compact
Hitachi EX8-2B — 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 Z482?

The Kubota Z482 engine has an oil capacity of 3.8 liters.

What is the displacement of the Kubota Z482?

The Kubota Z482 has a displacement of 0.479 liters with 2 cylinders.

Which generators use the Kubota Z482 engine?

The Kubota Z482 powers 19 generator set(s), including Cummins/Onan MDKB, Denyo DA-6000SS, FG Wilson KH6-1S, Fischer Panda 8000i PMS, Generac MLTS.

What fuel filter does the Kubota Z482 use?

The Kubota Z482 uses fuel filter part numbers Kubota 1522143081, Donaldson P557440, Donaldson P550127.

What air filter does the Kubota Z482 use?

The Kubota Z482 uses air filter part numbers Kubota 1522211223, Kubota RG15842930, Donaldson P102745.

How often should you change the oil in the Kubota Z482?

The Kubota Z482 oil change interval is every 200 hours.

What is a common problem with the Kubota Z482 engine?

A commonly reported issue on generators using the Kubota Z482 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..