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Generac In Line 4 Generator Set

The Generac In Line 4 is a 22 kW Natural Gas, Propane Vapor standby generator set powered by a Generac Inline 4 engine. It is available at 120/240 V and 120/208 V, 1-phase and 60 Hz. It holds about 3.79 L (1.0 gal) of oil and 9.46 L (2.5 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses group-26 battery rated 525 CCA at 12 V.

22 kW
Standby
2.4 L
Displacement
3.785 L
Oil capacity
1
Document types

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Specifications

FuelNatural Gas, Propane Vapor
Frequency60.0 Hz
Standby power22 kW
Oil capacity3.785 L
Alternator12V 30 Amp
Voltage options120/240 V, 38 V, 22 V, 92 V, 120/208 V, 42 V, 27 V, 80 V
Phase1-phase,3-phase
Power factor[1.0, 0.8]
Battery groupGroup 26
Battery cranking525 CCA
Battery voltage12 V
Max ambient50 °C

Engine

Generac Inline 4
Oil capacity3.785 L
Coolant capacity9.46 L
Displacement2.4 L
AspirationNaturally Aspirated
Rated speed1800 rpm

Maintenance & consumables

for the Generac Inline 4
ItemSpecCapacityPart #Interval
Air filterAir is necessary for successful combustion in an engine. In fact, for efficient combustion, a modern engine requires several thousand times as much air as it does fuel. Clean air - air almost 100% pure - is critical to engine survival and vital to its performance.500 hr find
Fuel filterinspect and test fuel system50 hr find
Oil filterModern oils play vital functions in protecting engines, especially in a heavy-duty situation. Lubricating oil acts to reduce friction and wear, cool engine parts, seal combustion chambers, clean engine components and inhibit corrosion.100 hr find
BeltDrive belts are necessary to operate the accessory components attached to the engine, such as the alternator, and the water pump.500 hr find
Coolant
Coolant filtercheck starter, check engine DC alternator find
Oilbreak-in oil and filter4.0100 hr

Common questions

What is the power rating of the Generac In Line 4?

The Generac In Line 4 is rated 22 kW standby.

What engine does the Generac In Line 4 use?

The Generac In Line 4 is powered by the Generac Inline 4 engine.

What fuel does the Generac In Line 4 use?

The Generac In Line 4 runs on Natural Gas, Propane Vapor.

What is the oil capacity of the Generac In Line 4?

The Generac Inline 4 engine in the Generac In Line 4 has an oil capacity of 3.785 liters.

What alternator does the Generac In Line 4 use?

The Generac In Line 4 uses a 12V 30 Amp alternator.

Troubleshooting

10

Symptoms & remedies

SymptomCauseRemedy
Display Reads: Press ENTER to begin the activation process.If ESCAPE is pressed instead of ENTER, your generator will only run in manual mode (for test purposes) and NOT ACTIVATED will be displayed. You will need to remove the generator control panel fuse AND disconnect the T1, N1 and N2 connector in the external connection box (if equipped); or disconnect utility input (main breaker) to the transfer switch for 3-5 seconds and reconnect, then begin with Step 1.
Display Reads: Use ARROW keys to scroll and find the first number of your Activation Code. Press ENTER to select.Repeat this step until all digits have been entered. Use ESCAPE to correct previous digits.
Display Reads: Activation is complete when all digits are entered above and your screen shows this display.Follow the controller prompts to continue setting the time function. Refer to your Owner’s Manual with questions.
What happens if “Wrong Passcode Try Again” appears?Re-enter the activation code. If a second attempt is unsuccessful, check the number against the code given on activategen.com. If it is correct and the generator will not accept it, contact 1-888-9ACTIVATE (922-8482).
Engine won’t crank.1. Control panel 7.5 amp fuse blown. 2. Loose or corroded or defective battery cables. 3. Defective starter contactor. 4. Defective starter motor. 5. Dead or Defective Battery.1. Replace fuse.* 2. Tighten, clean or replace battery cables as necessary.* 3. Replace contactor.* 4. Replace starter motor.* 5. Remove, change or replace battery.*
Engine cranks but won’t start.1. Out of fuel. 2. Fuel solenoid (FS) is defective. 3. Spark plugs defective.1. Replenish fuel/turn on fuel valve. 2. Replace solenoid.* 3. Clean, regap or replace plugs.
Engine starts hard, runs rough.1. Air cleaner plugged or damaged. 2. Defective spark plugs. 3. Fuel pressure incorrect. 4. Insufficient fuel supply. 5. Fuel system set to wrong fuel type.1. Clean or replace as needed. 2. Clean, regap or replace plugs. 3. Confirm fuel pressure to regulator is as recommended in SPECIFICATIONS.* 4. Confirm fuel pressure to regualtor is as recommended in SPECIFICATIONS.* 5. Reconfigure the fuel system. (See RECONFIGURING THE FUEL SYSTEM in manual.*)
Engine starts then shuts down.1. Engine oil level is low. 2. Engine is overheated. 3. Defective Low Oil Pressure Switch 4. Defective Coolant Temperature Switch 5. Defective Control Module circuit board. 6. Coolant Level is Low. 7. Defective Low Coolant Level Switch.1. Check oil and add oil as needed. 2. Check cooling system for leaks. 3. Replace switch.* 4. Replace switch.* 5. Replace board.* 6. Repair leak - Add coolant. 7. Replace Switch.*
AUTO/OFF/MANUAL Switch at OFF, engine continues to run.1. Defective AUTO/OFF/MANUAL switch 2. Defective Control Module circuit board1. Replace board.* 2. Replace board.*
No AC output from generator.1. Main line circuit breaker is tripped/open. 2. Generator internal failure. 3. Thermal circuit breaker open.1. Reset to ON/CLOSED. 2. * 3. Auto-reset - Wait 5 min. and attempt restart.*Contact the nearest Dealer for assistance.

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

Parts

9
Part #DescriptionQtySystem
005616-0Extreme Cold Weather KitService part / kit Amazon eBay $219.99 PartsGeek
005630-0Cold Weather KitService part / kit Amazon eBay PartsGeek
005656-0Scheduled Maintenance KitService part / kit Amazon eBay PartsGeek
005984-0Scheduled Maintenance KitService part / kit PartsGeek
057329-TR-200B ControllerService part / kit PartsGeek
0H7306Cover190Service part / kit PartsGeek
0K8636-C36/45 kW (2.4 L)1Service part / kit PartsGeek
CntrlNexus001Control PanelService part / kit PartsGeek
Maint024MaintenanceService part / kit PartsGeek

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

RatingLoadL/hgal/h
Standby25%42.016.0
Standby50%100.040.0
Standby75%190.075.0
Standby100%255.0101.0

Available documents

Owner's manual — 3815 qt027 om 2012 (Generac)