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Kohler KG2204T Engine

Name: Kohler KG2204T Engine
Brand: Kohler

The Kohler KG2204T is a 2.2 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 47.8 kW. It powers generator sets from Kohler, including the 25CCL, 30CCL, 30RCL and 36CCL. It holds 4.2 L (1.1 gal) of oil and 13.2 L (3.5 gal) of coolant.

Also known as: Kohler KG2204T

2.2 L

Displacement

Cylinders

1800 rpm

Rated speed

47 kW

Gross power

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

Engine specifications

Oil capacity	4.2 L
Coolant capacity	13.2 L
Displacement	2.2 L
Cylinders	4
Aspiration	Turbocharged
Rated speed	1800 rpm
Gross power	47 kW

Generator sets powered by this engine

Kohler 25CCL Kohler 30CCL Kohler 30RCL Kohler 36CCL Kohler 38RCLB Kohler 38RCLC

How to read your Kohler engine serial & model number →

Common problems

Three unsuccessful starting attempts. Over Crank
Fix: Check the fuel supply, spark plug, and battery. Check for loose connections. Contact an authorized distributor/dealer for service.
The generator set is not in Automatic (standby) mode. Remote start and stop commands from a transfer switch or remote switch will be ignored. Not in Auto
Fix: Press AUTO to place the generator set in Automatic mode, when appropriate.
The generator set does not crank.
Cause: Battery weak or dead, Battery connections reversed or poor, Blown fuse(s)
Fix: Recharge or replace the battery, Check the connections, Replace the fuse. Contact an authorized Kohler distributor/dealer for service if fuse blows repeatedly
The generator set cranks but does not start, starts hard, lacks power, or operates erratically.
Cause: Air cleaner clogged, Battery weak or dead, Battery connection poor, Spark plug wire connection loose
Fix: Clean and/or replace the air cleaner, Recharge or replace the battery, Clean and tighten the battery connections, Check the spark plug wires
The engine ECM indicates low oil pressure. Oil Pres Low
Fix: Note: The low oil pressure shutdown does not protect against low oil level. Check the engine oil level regularly as recommended in Section 4. Check for leaks in the lubrication system. Check the oil level and add oil if the level is low. Check the oil pressure switch and wiring.
The emergency stop switch has been activated, or there has been an open circuit in the wiring. Emerg Stop
Fix: Contact an authorized distributor/dealer for service.
The ECM reported an Engine Air Temperature/Manifold Absolute Pressure Sensor (TMAP) error. IAT Volt Lo
Fix: Contact an authorized distributor/dealer for service and provide the fault code.
The ECM reported a problem with the coolant temperature sensor reading: 5 = open circuit. CoolntTemp 5
Fix: Contact an authorized distributor/dealer for service and provide the fault code.
The ECM reported a problem with the coolant temperature sensor reading: 4 = low voltage. CoolntTemp 4
Fix: Contact an authorized distributor/dealer for service and provide the fault code.
The ECM reported a problem with the coolant temperature sensor reading: 3 = high voltage. CoolntTemp 3
Fix: Contact an authorized distributor/dealer for service and provide the fault code.
Remote stop command received from a remote switch, ATS, or OnCuer Plus.
Fix: Check the remote switch position
Overspeed shutdown.
Fix: Reset the controller. If the overspeed fault occurs again, contact an authorized Kohler distributor/dealer
Overcrank shutdown.
Fix: Reset the controller. If the overcrank fault occurs again, contact an authorized Kohler distributor/dealer
No engine rotation is sensed during cranking. Shuts down 3 seconds after the fault is detected. Locked Rotor
Fix: Check the battery. Check for loose connections. Check for obstruction of alternator or engine. Contact an authorized distributor/dealer for service.
No AC output.
Cause: AC circuit breaker in the OFF position
Fix: Place the circuit breaker in the ON position

Compiled from service & troubleshooting documentation across every generator set that uses the Kohler KG2204T.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Oil filter	Cartridge		—	120 hr
Oil		3.3 L	—	120 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Repair guides

Step-by-step procedures compiled from the Kohler service manual for this engine.

Service intervals

Item	Action	Hours	Months	Notes
Air cleaner element	Clean	20 hr	3 mo	Replace at 3 years or 400 hours
Bolts and nuts for tightness	Check	20 hr	3 mo	Quarterly or 20 hours
Battery cables	Clean	120 hr	12 mo
Battery charge	Check	120 hr	12 mo
Battery fluid level	Check	120 hr	12 mo
Battery for cracks and corrosion	Check	120 hr	12 mo
Belts and belt tension	Check	120 hr	12 mo	See engine O/M
Engine oil and filter	Change	120 hr	12 mo
Fuel regulator pressure	Check	120 hr	12 mo
Radiator exterior	Check	120 hr	12 mo
Brushes and collector ring	Other	300 hr	12 mo	Authorized distributor/dealer only
Air induction for leaks	Check	500 hr	36 mo
Engine coolant	Change	500 hr	36 mo	Long-life coolant: 5000 hours or 5 years
Hoses, condition	Check	500 hr	36 mo	Replace as necessary
Intake manifold for vacuum leaks	Check	500 hr	36 mo
Secondary ignition coil wires	Check	500 hr	36 mo	Replace as necessary
Spark plug wires for cuts, abrasions, or hardening	Check	500 hr	36 mo	Replace as necessary
Spark plugs	Change	500 hr	36 mo
Exhaust manifold for leaks	Check	2000 hr	60 mo	Replace as necessary
Exhaust piping for leaks	Check	2000 hr	60 mo
Fuel shutoff valve operation	Check	2000 hr	60 mo
HEGO (oxygen) sensor connections and wires	Check	2000 hr	60 mo	See engine O/M
Fuel lines and connections	Check		3 mo	Quarterly
Vacuum lines and fittings	Inspect		60 mo	5 years
Wiring for cuts, abrasions, or corrosion	Inspect		60 mo	5 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
Gap	Spark plug gap	0.51	mm (0.02 in.)
Gap	Spark plug gap	0.7--0.8	mm (0.028--0.030 in.)
Gap	Spark plug gap	0.7-0.8	mm (0.028-0.030 in.)
Gap	Spark plug gap	0.76	mm (0.03 in.)
Gap	Spark plug gap	0.8--0.9	mm (0.03--0.04 in.)
Gap	Spark plug gap	0.89	mm (0.035 in.)
Gap	Spark plug gap	0.9--1.0	mm (0.036--0.04 in.)
Gap	Spark plug gap	0.9-1.0	mm (0.036-0.040 in.)
Other	Battery wrap length	1067 (42)	mm (in.)
Other	Battery wrap length	864 (34)	mm (in.)
Other	Heater wrap rating	50	Watts
Other	Heater wrap rating	65	Watts
Other	Plug cord length	75 (3)	mm (in.)
Other	Power cord length	1677 (66)	mm (in.)
Other	Power cord length	1830 (72)	mm (in.)
Other	Power cord length	483 (19)	mm (in.)
Pressure	Radiator pressure cap rating	97	kPa (14 psi)
Temperature	Thermostat off temperature	27	C (80 F)
Temperature	Thermostat on temperature	16	C (60 F)
Torque	Oil filter	25	Nm (18.4 ft. lbs.)	after hand-tight plus 3/4 turn
Torque	Spark plug	18	Nm (13.3 ft. lbs.)	plus additional 1/4 turn
Torque	Spark plug	25	Nm (18.4 ft. lbs.)	plus additional 1/4 turn
Torque	Spark plug torque	15	Nm (11 ft. lb.)
Torque	Spark plug torque	18	Nm (13.3 ft. lb.)
Torque	Spark plug torque	24.4--29.8	Nm (18--22 ft. lb.)
Torque	Spark plug torque	25	Nm (18 ft. lb.)
Voltage	Undervoltage dropout (ATS source availability)	90	% of pickup
Voltage	Undervoltage pickup (ATS source availability)	90	% of nominal

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% ethylene glycol-based long-life coolant / 50% clean, softened water		above -37°C	13.2 L (3.5 gal.)	13.7 L (3.6 gal.) with block heater; freeze protection to -37C (-34F), overheat protection to 149C (300F)
Engine oil	SAE 5W-30 (cold environments); 10W-30 (hot environments, never below 0C/32F)	API Starburst certification, service class SJ or higher (gasoline engines)		4.2 L (4.4 qt.)	CC/CD classification oils not acceptable

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
AC Sens Loss	AC Sensing Lost	AC sensing lost in Auto mode; warning after 1 sec if no output after crank disconnect, shutdown after 3 sec if voltage was present then lost	Warning	Contact an authorized distributor/dealer for service
ATS ComError	ATS Communication Error	RXT interface connection is lost	Warning	Check communication wiring between transfer switch interface board and generator set
ATS PhaseRot	ATS Phase Rotation Mismatch	Transfer switch phase rotation does not match; ATS will not transfer	Warning	Correct the ATS connection per installation manual, wiring diagrams, and labels
Accy PwrOver	Accessory Power Overload	Over current fault (short circuit) on the accessory controller power output	Warning	Contact an authorized distributor/dealer for service
Aux Input	Auxiliary Input	An optional customer-connected input is closed (digital input from optional PIM)	Shutdown	Check customer-supplied equipment
Battery CrLo	Critically Low Battery Voltage	Battery voltage falls below 11V for more than 10 seconds; inhibited during crank	Warning	Check battery rating/condition and charger operation; charge or replace battery
Battery High	High Battery Voltage	Battery voltage rises above 133% (16V) of the battery voltage setting for more than 10 seconds	Warning	Check battery rating/condition and charger operation
Battery Low	Low Battery Voltage	Battery voltage falls below the battery voltage setting (typically 12.5V) for more than 90 seconds when engine is not running	Warning	Check battery rating/condition and charger operation; charge or replace battery
Chk DateTime	Verify Date Time Setting	The time and date have not been set on the generator controller	Warning	Enter the date and time using the RDC2 controller
CoolTemp Vhi	Ect Higher Than Expected 2	Coolant temperature is extremely high	Shutdown	Check coolant level; check radiator/fans for obstruction; contact dealer with fault code
CoolTempHigh	Ect Higher Than Expected 1	Coolant temperature is too high	Warning	Check coolant level; check radiator/fans for obstruction; contact dealer with fault code
Coolant Lvl Low	Low Coolant Level Shutdown	The coolant level switch input has been activated	Shutdown	Check coolant level; check radiator hoses for leaks; contact dealer
CoolntTemp 0	Coolant Temp 0 Shutdown	ECM reported coolant temperature sensor problem: 0 = high temperature	Shutdown	Check coolant level and radiator/fans; contact dealer with fault code
CoolntTemp 3	Coolant Temp 3 Shutdown	ECM reported coolant temperature sensor problem: 3 = high voltage	Shutdown	Contact an authorized distributor/dealer for service and provide the fault code
CoolntTemp 4	Coolant Temp 4 Shutdown	ECM reported coolant temperature sensor problem: 4 = low voltage	Shutdown	Contact an authorized distributor/dealer for service and provide the fault code
CoolntTemp 5	Coolant Temp 5 Shutdown	ECM reported coolant temperature sensor problem: 5 = open circuit	Shutdown	Contact an authorized distributor/dealer for service and provide the fault code
Crank Lost	Crank Signal Lost	Crankshaft Position Sensor (CPS) timeout error occurred	Warning	Contact an authorized distributor/dealer for service and provide the fault code
ECM warnings	ECM warnings (any warning with ECM in the fault name)	Group of faults that originate from the engine ECM and contain ECM in the fault name	Warning	Contact an authorized distributor/dealer for service and provide the fault code
Emerg Stop	Emergency Stop Shutdown	The emergency stop switch has been activated, or there has been an open circuit in the wiring	Shutdown	Contact an authorized distributor/dealer for service
Eng Speed High	High Engine Speed	Engine speed exceeds 115% of normal running speed for more than 0.3 seconds	Shutdown	Contact an authorized distributor/dealer for service
Eng Speed Low	Low Engine Speed	Engine speed drops below 85% of normal running speed for more than 3 seconds	Shutdown	Reduce the load; contact an authorized distributor/dealer for service
Exer Not Sch	ATS Exercise Not Scheduled	No exercise has been scheduled on the RDC2 controller	Warning	Set the exerciser per Section 2.5
Frequency High	High Frequency	Governed frequency exceeds 110% of system frequency setpoint for more than 10 seconds (10 sec inhibit after start)	Shutdown	Contact an authorized distributor/dealer for service
Frequency Low	Low Frequency	Governed frequency falls below 90% of system frequency setting for more than 10 seconds, or 1 Hz below setting for more than 60 seconds	Shutdown	Reduce the load and restart; contact dealer
Genset S/N Unaval	Unavailable Genset Serial Number	Generator set serial number is unavailable	Warning	Contact an authorized distributor/dealer for service
Ground Fault	Ground Fault Warning	The digital input for Ground Fault Warning is active (low); PIM required	Warning	Check customer equipment connected to the PIM
IAT High 1	Iat Higher Than Expected 1	Engine manifold air temperature is too high	Warning	Contact an authorized distributor/dealer for service and provide the fault code
IAT Volt Lo	Iat Low Voltage	ECM reported an Engine Air Temperature/Manifold Absolute Pressure Sensor (TMAP) error	Warning	Contact an authorized distributor/dealer for service and provide the fault code
Lo Crank Vlt	Low Cranking Voltage	Battery voltage falls below 60% of system battery voltage for more than 6 seconds while the starter is engaged	Warning	Charge or replace the battery
Locked Rotor	Locked Rotor	No engine rotation is sensed during cranking; shuts down 3 seconds after fault detected	Shutdown	Check battery, connections, and for obstruction of alternator or engine; contact dealer
MainPwrOverL	Main Power Overload	Over current fault on the controller power output (short circuit)	Shutdown	Check for shorted run relay; check wiring for short circuits; contact dealer
Maint Req'd	Maintenance Required Warning	Engine maintenance is due	Warning	Check the maintenance schedule in the operation manual
Not in Auto	Not In Auto	The generator set is not in Automatic (standby) mode; remote start/stop commands will be ignored	Warning	Press AUTO to place the generator set in Automatic mode
Oil Pres Low	Low Oil Pressure	The engine ECM indicates low oil pressure	Shutdown	Check for leaks in the lubrication system; check oil level; check oil pressure switch and wiring
Over Crank	Over Crank	Three unsuccessful starting attempts	Shutdown	Check fuel supply, spark plug, battery, and connections; contact dealer
PrimLoopOpn	Primary Loop Open	Ignition coil 1 voltage is below normal or there is an open circuit	Warning	Check the battery voltage; contact dealer with fault code
PrimLoopSht	Primary Loop Shorted	Ignition coil 1 voltage is abnormal	Warning	Check the battery voltage; contact dealer with fault code
Spd Sens Flt	Speed Sensor Fault	Engine speed sensor has failed or engine stalled; ECM no longer reporting valid speed	Shutdown	Contact an authorized distributor/dealer for service
Volts L1-L2 High	High Generator Voltage L1-L2	Output voltage exceeds 120% of system nominal voltage for more than 2 seconds	Shutdown	Contact an authorized distributor/dealer for service
Volts L1-L2 Low	Low Generator Voltage L1-L2	Output voltage falls below 80% of nominal system voltage for more than 10 seconds	Shutdown	Reduce the load and restart; contact dealer
Volts L2-L3 High	High Generator Voltage L2-L3	Output voltage exceeds 120% of system nominal voltage for more than 2 seconds	Shutdown	Contact an authorized distributor/dealer for service
Volts L2-L3 Low	Low Generator Voltage L2-L3	Output voltage falls below 80% of nominal system voltage for more than 10 seconds	Shutdown	Reduce the load and restart; contact dealer
Volts L3-L1 High	High Generator Voltage L3-L1	Output voltage exceeds 120% of system nominal voltage for more than 2 seconds	Shutdown	Contact an authorized distributor/dealer for service
Volts L3-L1 Low	Low Generator Voltage L3-L1	Output voltage falls below 80% of nominal system voltage for more than 10 seconds	Shutdown	Reduce the load and restart; contact dealer

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

Procedures

RDC2 Voltage Calibration Using SiteTech adjustment

Tools: digital voltmeter, personal computer, SiteTech software

Connect PC to controller via USB
With generator off, connect multimeter across L1/L2 (AC volts)
Start generator set
Compare voltmeter reading to controller display
Calculate new Genset Calibration Factor Voltage using (Vmeter / Vcontrol) x Fold = Fnew
Enter new value into SiteTech and click Apply Changes
Verify voltmeter matches controller display
Repeat for L2-L3 and L3-L1 if three-phase
Press OFF to stop generator set

RDC2 Voltage Calibration Using the Controller Keypad adjustment

Tools: digital voltmeter

With generator off, connect digital multimeter across L1 and L2, set to AC volts
Start generator set with RUN button
Navigate to Generator Metering menu, press Select; Volts L1-L2 displayed
Press Select; voltage number flashes
Use up/down arrows to match voltmeter reading
Press Select to confirm
Step to Return screen
Press OFF to stop generator set

VSC Current (Load) Calibration Using the Controller Keypad adjustment

Tools: clamp-on DC current probe or DC current meter

Connect DC current probe/clamp meter to measure generator current
Start generator with RUN button
Adjust system voltage to obtain rated current output with battery bank attached (or use load bank)
Trip output breaker
Navigate to Generator Metering menu, select Generator Load
Press and hold Select for No-Load Calibration; verify breaker open, confirm Yes
Close output breaker; verify rated output current, confirm Yes
Verify displayed load is correct; recalibrate if necessary
Press OFF to stop generator set

Resetting the Controller after a Fault Shutdown diagnostic

⚠ Always identify and correct the cause of a fault shutdown before resetting

Press the Select button to go to the Overview menu
Press Select again to display the active fault
Press Select; Confirm Clear Fault: NO is displayed
Press the Up arrow button; Confirm Clear Fault: YES is displayed
Press Select to enter YES and clear the fault
Press Select to return to the Overview menu
Press AUTO to put the generator set into automatic mode

Installation Guidelines installation

⚠ Minimum 8 feet clearance from exhaust end

⚠ Verify state and local codes for installation distance requirements

Position exhaust aimed away from or parallel to structure
Do not direct exhaust at play areas or gathering spaces
Maintain minimum 5 feet distance from windows, vents, doors or openings
Install minimum 18 inches from structure per NFPA 37
Close windows and doors on adjacent walls
Keep furnace and intakes at least 10 feet from exhaust end
Provide 4 inch thick concrete pad extending 6 inches beyond genset
Maintain clear area with no combustibles within 8 feet of exhaust
Keep sensitive plants and patio furniture at least 8 feet from exhaust

Air Cleaner Element and Precleaner maintenance

Disable set: press OFF button, disconnect battery charger power, remove battery cables, negative (--) lead first.
Loosen the cover retaining knob(s) or release the retaining clips and remove the cover.
Remove and discard the old air cleaner element and precleaner (if equipped).
Install the precleaner over the new air cleaner element.
Install the paper element onto the air cleaner base, making sure it is flat and properly seated.
Reinstall the element cover, element cover nut, and the air cleaner cover; secure with the knob(s) or clips.
15RES/30RES and RCL models: wipe cover and housing with a clean rag and make sure sealing surfaces fit correctly.
Reconnect the battery cable, negative (--) lead last.

Filling Cooling System maintenance

⚠ Do not add coolant to a hot engine; cylinder block or head can crack

Close the radiator coolant drain valve and tighten hose clamps
Fill the radiator with 50% ethylene glycol / 50% clean softened water mixture
Operate the engine with the radiator cap removed until the thermostat opens and upper hose is hot
Stop the engine and allow it to cool
Add coolant to just below the overflow tube on the filler neck
Replace the radiator pressure cap
Maintain the coolant overflow bottle level between Hot and Cold markings

Firmware Update Using SiteTech maintenance

⚠ Do not load RDC2.4 firmware onto a red- or green-board controller

Tools: personal computer, USB cable, SiteTech software

Download latest firmware file (.bin) from Kohler Power Resource Center or dealer portal
Connect controller to PC via USB cable
Start SiteTech; program recognizes connected device
Click Update Firmware
Browse to and select firmware file, click Open
Verify current/new version and file name, click Update Firmware
Wait for 'Firmware Updated Successfully' message, click Close

Oil Change Procedure maintenance

⚠ Accidental starting can cause severe injury or death; disconnect battery, negative lead first

Tools: oil filter wrench, drain hose, funnel

Press the OFF button on the RDC2 generator set controller
Disconnect the power for the battery charger
Disconnect the generator set engine starting battery, negative lead first
Remove the housing side panel
Remove the plug from the oil drain fitting and install a drain hose
Open the oil drain valve on the engine
Allow time for the engine oil to drain completely, then close the drain valve
Replace the oil drain plug
Remove the oil filter by rotating it counterclockwise with an oil filter wrench
Apply a light coat of clean oil to the gasket of the new oil filter
Thread the new filter by hand, then tighten an additional 3/4 turn (torque 25 Nm/18.4 ft. lbs.)
Fill with 5W-30 oil per the oil capacity table
Start the generator set and check for leaks around the oil filter
Check oil level and add oil as necessary to the Full mark
Reset the maintenance timer on the RDC2 controller

Oil and Oil Filter maintenance

⚠ Hot engine oil can cause severe injury or death. Avoid skin contact with hot oil.

⚠ Do not work on the generator set until it cools.

⚠ Accidental starting can cause severe injury or death. Remove the negative (--) lead first when disconnecting the battery.

Tools: Funnel, Drain tube (3/8 in. inside diameter), Catch basin / drain pan

Disable set: press OFF button, disconnect battery charger power, remove battery cables, negative (--) lead first.
Drain the oil while it is warm. On most models a drain plug is on the service side, opposite the starter.
For most models remove one oil drain plug and the oil fill cap/dipstick; aim the drain tube into a catch basin.
For most models open the valve near the oil sump and allow ample time for complete drainage.
Close the valve and place the tube back in the clip on the bulkhead wall.
For 8/10/12RESV(L), cover the alternator with rags near the oil drain valve and oil filter.
For 8/10/12RESV(L), place a drain tube (3/8 in. inside diameter) onto the oil drain valve into a drain pan.
For 8/10/12RESV(L), open the oil drain valve, remove the dipstick and oil fill cap, and drain completely.
For 8/10/12RESV(L), close the oil drain valve and remove the oil drain tube.
Remove the old filter, tilting it upward to prevent spilling, and wipe off the adapter/base on the engine.
Place a new replacement filter open end up in a shallow pan; pour new oil (provided) through the threaded center hole to the bottom of threads.
Allow a minute or two for the oil to be absorbed by the filter material.
Apply a thin film of clean oil to the rubber gasket on the new oil filter.
Install the new oil filter; hand tighten clockwise until the gasket contacts the adapter, then tighten an additional 3/4--1 turn.
Fill the crankcase with new oil to the F/FULL mark on the dipstick; reinstall cap/dipstick, reconnect battery cable negative (--) lead last, test run, check for leaks, and recheck oil level.

Spark Plug Service Procedure maintenance

⚠ Accidental starting can cause severe injury or death

Tools: 13/16-in. spark plug socket with rubber insert, torque wrench, gapping tool

Press the OFF button on the RDC2 controller
Disconnect the power to the battery charger
Disconnect the generator set engine starting battery, negative lead first
Remove spark plug wires by grasping the boot and turning slightly while pulling
Loosen the spark plug with a 13/16-in. spark plug socket with rubber insert
Remove and examine each spark plug
Check the spark plug gap and adjust as necessary (see gap spec)
Reinstall the spark plug and torque to spec
Use a ratchet wrench to tighten an additional 1/4 turn
Push the spark plug boot firmly onto the spark plug
Reconnect the battery, negative lead last, and reconnect the battery charger power

Spark Plugs maintenance

⚠ Servicing the air cleaner: a sudden backfire can cause severe injury. Do not operate with the air cleaner removed.

Tools: 13/16 in. socket, 5/8 in. spark plug socket, Wire feeler gauge, Torque wrench

Disable set: press OFF button, disconnect battery charger power, remove battery cables, negative (--) lead first.
Clean or blow out the area around the base of the plug(s) before removal to keep dirt out of the engine; wear eye protection.
Using a spark plug socket, remove and discard the old spark plug(s).
24RCL, 30RCL, and 38RCLB: use a 13/16 in. socket. Other models: use a 5/8 in. spark plug socket.
Check and set the gap of the new spark plug(s) using a wire feeler gauge.
Adjust the gap by carefully bending the ground electrode.
Apply a light coating of anti-seize lubricant to the spark plug threads and wipe away any excess compound.
Install the new spark plug(s) and torque as shown in Figure 4.
Reconnect the spark plug lead(s).
Reconnect the battery cable, negative (--) lead last.

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
100/200	1	Single
100/200	3	Delta
110/220	1	Single
110/220	3	Delta
115/230	1	Single
120	1	Single		Genset System Voltage/Frequency/Phase table for controller setup
120/208	3	4D8.3	12, Reconnectable	Three-phase
120/208	3	Wye
120/240	1	4E8.3	4	Single-phase
120/240	1	Single
120/240	3	Delta
127/220	3	Wye
220	1	Single
220/380	3	Wye
230	1	Single
230/400	3	Wye
240	1	Single
240/416	3	Wye
277/480	3	Wye

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 oil capacity of the Kohler KG2204T?

The Kohler KG2204T engine has an oil capacity of 4.2 liters.

What is the displacement of the Kohler KG2204T?

The Kohler KG2204T has a displacement of 2.2 liters with 4 cylinders.

Which generators use the Kohler KG2204T engine?

The Kohler KG2204T powers 6 generator set(s), including Kohler 25CCL, Kohler 30CCL, Kohler 30RCL, Kohler 36CCL, Kohler 38RCLB.

How often should you change the oil in the Kohler KG2204T?

The Kohler KG2204T oil change interval is every 120 hours.

What is a common problem with the Kohler KG2204T engine?

A commonly reported issue on generators using the Kohler KG2204T is: Three unsuccessful starting attempts.. Fix: Check the fuel supply, spark plug, and battery. Check for loose connections. Contact an authorized distributor/dealer for service..