Service parts for the 30RCL
Grouped by system, with how many of each the parts manual calls for.
Ignition
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas/LPG |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 30 kW |
| Standby kVA | 30 |
| Emissions | EPA certified |
| Controller | RDC2 |
| Oil capacity | 4.2 L |
| Alternator | 4D8.3 (Class H insulation) |
| Voltage options | 120/240 V, 120/208 V, 127/220 V, 277/480 V |
| Phase | 1 |
| Rated current | 125 A |
| Power factor | 1.0 |
| Battery group | 24 |
| Battery cranking | 630 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 13.2 L |
| Engine jacket water | 2.65 L |
| Max ambient | 45 °C |
| Dimensions (L×W×H) | 1880×836×1169 mm |
| Dry weight | 599 kg |
| Wet weight | 599 kg |
| Sound level | 61.0 dBA @ 7 m |
Engine
| Oil capacity | 4.2 L |
|---|---|
| Coolant capacity | 13.2 L |
| Displacement | 2.2 L |
| Aspiration | Natural (KG2204); Turbocharged (KG2204T) |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Kohler KG2204 / KG2204T| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 400 hr | |||
| Fuel filter | — | 50 hr | |||
| Oil filter | Cartridge | ×1 | — | 120 hr | |
| Battery | BCI group 24 size 12-volt minimum 630 CCA at 0_F | — | 120 hr | ||
| Belt | Deflection new 5-7mm, used 7-8mm at 98N test pressure | — | 120 hr | ||
| Coolant | 50% ethylene glycol-based long-life coolant | 13.2 L | — | 500 hr | |
| Coolant filter | — | ||||
| Oil | 4.2 L | — | 120 hr | ||
| Spark plug | KG2204: GM92785, M14 x 1.25 thread; KG2204T: GM100158 | GM92785 | 500 hr | Amazon eBay |
Service intervals
38| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Battery connections | Check | 10 hr | Weekly or every 10 hours of operation. Check for tightness and signs of corrosion. | |
| Engine | Test | 10 hr | Weekly or every 10 hours of operation. Start engine and listen for abnormal noises. | |
| Fuel system leaks | Check | 10 hr | Weekly or every 10 hours of operation. Check for fuel system leaks, hissing sounds, or gas odor. | |
| Oil and coolant leaks | Check | 10 hr | Weekly or every 10 hours of operation. | |
| Wiring and electrical connections | Check | 10 hr | Weekly or every 10 hours of operation. Repair or replace loose or damaged components. | |
| Air cleaner element | Clean | 20 hr | 3 mo | Replace at 3 years or 400 hours |
| Air filter | Clean | 20 hr | Quarterly or every 20 hours of operation. See equipment Operation Manual. | |
| Battery voltage | Check | 20 hr | Quarterly or every 20 hours of operation. Charge or replace as needed. | |
| Bolts and nuts for tightness | Check | 20 hr | 3 mo | Quarterly or 20 hours |
| Fasteners | Check | 20 hr | Quarterly or every 20 hours of operation. Check all fasteners for tightness. | |
| Battery | Check | 120 hr | Yearly or every 120 hours of operation. Check for cracks, damaged electrodes, and corrosion. | |
| 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 |
| Drive belt | Check | 120 hr | Yearly or every 120 hours of operation. Adjust or replace drive belt if necessary. | |
| Engine oil and filter | Change | 120 hr | 12 mo | |
| Engine oil and oil filter | Replace | 120 hr | Yearly or every 120 hours of operation. | |
| 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 filter element(s) | Change | 400 hr | 36 mo | 3 years or every 400 hours of operation. See equipment Operation Manual. |
| 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 | Check | 500 hr | 36 mo | 3 years or every 500 hours of operation. Check condition and electrode gap; adjust gap if necessary; replace if discolored or damaged. |
| 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
24| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Gap | Spark Plug Gap | 0.7-0.8 | mm (0.028-0.030 in.) | |
| Gap | Spark Plug Gap | 0.9-1.0 | mm (0.036-0.040 in.) | |
| 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 | 0.76 | 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.) | |
| Other | Drive Belt Tension | Deflection of a new belt is 5-7 mm (0.20-0.28 in.); Deflection of a used belt is 7-8 mm (0.28-0.31 in.) | mm | at pressure of 98 N (22 lb) |
| Pressure | Radiator pressure cap rating | 97 | kPa (14 psi) | |
| Temperature | Thermostat Settings | Valve open at 76C (169F); Valve lift fully open at 88C (190F) | C | |
| Torque | Oil Cooler Adapter Nut | 40 | N.m (29.5 ft.lbs.) | |
| Torque | Oil Drain Plug | 20-25 | N.m (14.8-18.4 ft.lb.) | |
| Torque | Oil Filter | 25 | N.m (18.4 ft.lbs.) | tighten the filter an additional 3/4 turn by hand until resistance |
| Torque | Spark Plugs - KG2204 | 18 | N.m (13.3 ft.lb.) | |
| Torque | Spark Plugs - KG2204T | 25 | N.m (18.4 ft.lb.) | |
| 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) | |
| Coolant | 50% long life coolant and 50% clean, softened water | -37°C to 149°C | Provides freezing protection to -37C (-34F) and overheating protection to 149C (300F). Do not mix long life coolants and conventional coolants. | ||
| Engine oil | SAE 5W-30 | API service class SJ or higher | 4.2 L | Multi-viscosity synthetic oil recommended. For best performance in colder environments (such as the United States and Canada). Oil dry fill capacity 4.2 L (4.4 qt.). | |
| 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 | |
| Engine oil | SAE 10W-30 (synthetic) | API service class SJ or higher | above 0°C | 4.2 L | For extremely hot environments where temperatures are never or rarely below 0C (32F). |
| Fuel | LPG: HD-5 or HD-10 | below 105°C | Maximum fuel pressure (engine OFF, no load) 11.0 in. W.C.; Minimum fuel pressure (engine ON, full load) 5.0 in. W.C. Operating temperature range -20C (-4F) to 105C (221F). | ||
| Fuel | Natural Gas (NG): standard pipeline | UL 2200 | -20°C to 105°C | Approximate supply volume 37.257 kJ/m3 (1000 BTU/ft.3). Minimum flow KG2204 11.9 m3/hr. (420 SCFH) @ 5.0 in. W.C.; KG2204T 19.6 m3/hr. (690 SCFH) @ 5.0 in. W.C. Allowable water vapor less than 112.3 kg per 1 million m3 (7 lb. per 1 million ft.3). | |
| Grease | high-quality lithium-based automotive grease | Alternator and starter bearings must be lubricated with this grease. |
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
44| 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 |
| Accy PwrOver | Accessory Power Overload | Over current fault (short circuit) on the accessory controller power output | 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 |
| 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 |
| 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 |
| 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 |
| 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
12NG to LPG Conversion adjustment
⚠ Disconnect and ground spark plug leads before servicing. Disconnect negative (-) battery cable.
⚠ Do not smoke or permit flames or sparks near fuels or the fuel system.
- Push the adjusting cap to its upper stop and rotate clockwise, release upward pressure, and lock into place.
- For LPG fuel only, connect wire N20 from the fuel pressure regulator to wire 45 from the ECM wiring harness using the quick-connect adapters.
- To reset for NG, reverse the procedure: push up on the adjusting cap and rotate counterclockwise, release, and lock.
- Disconnect wire N20 and wire 45.
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.
Change Engine Oil and Oil Filter maintenance
⚠ Hot parts can cause severe burns. Do not touch engine while operating or just after stopping.
Tools: Oil filter wrench, Collection container (minimum 8 liter capacity), Clean, dry cloth, Drop cloth
- Stop the engine and allow it to cool.
- Place a drop cloth and collection container beneath the oil drain plug.
- Remove the oil drain plug and allow the oil to drain into the container.
- Using an oil filter wrench, remove the old oil filter.
- Ensure the oil cooler adapter nut is tightened to 40 N.m and the adapter and gasket are seated properly.
- Wipe the oil filter installation surface clean and inspect for damage.
- Apply a thin film of fresh oil to the gasket of the new oil filter.
- Lightly screw in the new oil filter by hand until resistance; tighten an additional 3/4 turn, 25 N.m.
- Install the oil drain plug. Tighten to specification.
- Add fresh oil through the oil filler cap.
- Check engine oil level between the L and F marks on the dipstick.
- Install and tighten the oil filler cap.
- Start the engine and run it without load for approximately 5 minutes.
Check Coolant Level and Condition maintenance
⚠ Hot coolant and steam. Before removing the pressure cap, stop the engine and allow it to cool.
- Open the radiator cap slowly in order to release the pressure in the system.
- Maintain the coolant level in the coolant overflow bottle between the High and Low markings.
- Periodically check the coolant level by removing the radiator pressure cap; do not rely solely on the overflow bottle.
- Install and tighten the radiator cap.
- Check coolant condition: it should be uniformly colored and transparent; replace if dirty, discolored, or fouled with oil or rust particles.
Check Engine Oil maintenance
Tools: Clean, dry cloth
- Stop the engine and allow it to cool.
- Pull out the oil dipstick.
- Wipe the end of the dipstick with a clean, dry cloth.
- Insert the dipstick into the engine.
- Pull out the dipstick again to check the oil level; maintain between the F (full) and L (low) marks.
- If below L, check for leaks; if none, open the oil fill cap, wipe clean, and add oil up to the F mark.
- If oil leaks are found, repair them before operating the engine.
Check Fuel Level (LPG only) maintenance
Tools: Soapy water solution
- With the fuel valve on the LPG tank fully closed and the engine stopped, check the fuel gauge on the LPG tank.
- Refill the tank if it does not contain enough fuel for sustained operation.
- Fully open the fuel valve on the LPG tank.
- Check all fuel supply connections and lines for leaks using a soapy water solution; correct any leaks before restarting.
Check Fuel Supply Pipe and Connections maintenance
⚠ Have service performed by a KOHLER authorized distributor/dealer or qualified LPG/NG technician only.
Tools: Soapy water solution
- With the fuel valve fully opened and the engine stopped, check all fuel system connections and lines for leaks using a soapy water solution.
- Correct any leaks before restarting the engine. Do not start the engine if you can smell leaking gas.
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 | Wye | ||
| 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 power rating of the Kohler 30RCL?
The Kohler 30RCL is rated 30 kW standby (30.0 kVA).
Which engine powers the Kohler 30RCL?
The Kohler 30RCL is powered by the Kohler KG2204 / KG2204T engine.
What fuel type does the Kohler 30RCL take?
The Kohler 30RCL runs on Natural Gas/LPG.
How much oil does the Kohler 30RCL take?
The Kohler KG2204 / KG2204T engine in the Kohler 30RCL has an oil capacity of 4.2 liters.
What is the cooling system capacity of the Kohler 30RCL?
The Kohler 30RCL cooling system holds 13.2 liters (3.5 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
How loud is the Kohler 30RCL?
The Kohler 30RCL is rated at 61.0 dBA at 7 m, per the manufacturer specification sheet.
How much does the Kohler 30RCL weigh?
The Kohler 30RCL has a dry weight of 599 kg (1320 lb).
What voltages is the Kohler 30RCL available in?
The Kohler 30RCL is offered in 120/240 V, 120/208 V, 127/220 V, 277/480 V, 1-phase.
What size battery does the Kohler 30RCL need?
The Kohler 30RCL uses 1 battery, 12 V each, 630 CCA, group 24, per the manufacturer specification sheet.
What alternator comes on the Kohler 30RCL?
The Kohler 30RCL uses a 4D8.3 alternator. Insulation class H.
Troubleshooting
6Fault codes
| Code | Meaning | Remedy |
|---|---|---|
| Auxiliary Input | Auxiliary Input — An optional customer-connected input is closed. (Digital input from optional PIM.) | Check customer-supplied equipment. |
| Battery CrLo | Critically Low Battery Voltage — Engine starting battery voltage falls below 11 V for more than 10 seconds. Inhibited during the engine crank cycle. Clears when the battery voltage returns to an acceptable level. | Check the battery rating and condition.; Check the battery charger operation.; Charge or replace the battery. |
| Battery High | High Battery Voltage — Engine starting battery voltage rises above 133% (16 V) of the battery voltage setting for more than 10 seconds. Inhibited during the engine crank cycle. Clears when the battery voltage returns to an acceptable level. | Check the battery rating and condition.; Check the battery charger operation. |
| Battery Low | Low Battery Voltage — Engine starting battery voltage falls below the battery voltage setting (typically 12.5 volts) for more than 90 seconds when the engine is not running. Inhibited during the engine crank cycle. Clears when the battery voltage returns to an acceptable level. | Check the battery rating and condition.; Check the battery charger operation.; Charge or replace the battery. |
| Chk DateTime | Verify Date Time Setting — The time and date have not been set on the generator controller. | Enter the date and time using the RDC2 controller. See Figure 3-8 and Figure 3-16. |
Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Battery short circuits | Disconnect the battery before generator set installation or maintenance. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Kohler 30RCL troubleshooting guide (73 entries) →
Repair guides
15- Before Starting
- Change Engine Oil and Oil Filter
- Check and Adjust the Drive Belt
- Check and Adjust the Spark Plugs
- Check Coolant Level and Condition
- Check Engine Oil
- Check Fuel Level (LPG only)
- Check Hoses and Clamps
- Cold Weather Starting
- Installation Guidelines
- Long-Term Storage (More than 30 days)
- NG to LPG Conversion
- Replace the Drive Belt
- Replace the Spark Plugs
- Starting
Step-by-step procedures compiled from the Kohler service manual for this model.
Parts
35| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 256984 | Battery, 12 volt wet-charged, BCI group size 24, 650 CCA at -18 C, 120 min. reserve capacity | 1 | Battery | Amazon eBay |
| GM100158 | Spark Plug (use only genuine Kohler service parts) | Spark plug | Amazon eBay $49.00 | |
| GM103786 | Battery heater wrap | 1 | Battery heater wrap | Amazon eBay |
| GM104701 | Battery heater wrap | 1 | Battery heater wrap | Amazon eBay |
| GM104708 | Battery heater wrap | 1 | Battery heater wrap | Amazon eBay |
| GM92785 | Spark Plug, M14 x 1.25 thread | Spark plug | Amazon eBay | |
| K0379 | Turbocharger | 1 | Turbocharger | Amazon eBay |
| K0384 | Oil filter | 1 | Oil filter | Amazon eBay |
| K0395 | DRIVE BELT | 1 | Belt | Amazon eBay |
| K0679 | Charge Air Cooler | 1 | Charge air cooler | Amazon eBay |
| K0692 | Throttle Body | 1 | Throttle body | Amazon eBay |
| K0705 | Oil filter wrench | 1 | Oil filter | Amazon eBay |
| K0708 | DRIVE BELT | Belt | Amazon eBay | |
| KG2204 | Air Filter, Oil, qts. 5.1 (11.2) | 2.2L GMg93396 | Air filter | Amazon eBay |
| KG2204T | Engine Oil Pressure Sender | 1 | Sensor | Amazon eBay |
| idGM88249 | Oil Filter | 2 | Oil filter | Amazon eBay |
| idGM91526 | Drive Belt | 1 | Belt | Amazon eBay |
| idGM92075 | Turbocharger Oil Lines | 1 | Turbocharger | Amazon eBay |
| GM100209 | Maintenance Service Kit | 1 | Service part / kit | eBay |
| GM103784 | Battery heater wrap | 1 | Service part / kit | Amazon eBay |
| GM104032-S1 | Service kit with two L-shaped metal shields and U-channel edging for shielding the RDC2 controller from EMI interference. | 1 | Service part / kit | Amazon eBay |
| GM104699 | Battery heater wrap | 1 | Service part / kit | Amazon eBay $30.00 |
| GM104703-KP1 | Battery heater kit, 120 Volts, heater wrap rating 50 Watts, battery wrap length 864 mm (34 in.), power cord length 483 mm (19 in.), plug cord length 75 mm (3 in.) | 1 | Service part / kit | Amazon eBay $105.00 |
| GM62348-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM83718-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM86771-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM88832 | Flywheel adapter | Service part / kit | eBay | |
| GM89020-KP1 | Battery kit, wet-charged, contains 1 battery, BCI group size 24, 650 CCA, 120 min. reserve capacity (loose kit only) | 1 | Service part / kit | Amazon eBay |
| GM89979-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM90230 | Figure 1-23 Coolant Fill (24RCL shown) | 1 | Service part / kit | Amazon eBay |
| GM92075 | Figure 1-24 Coolant Fill (30RCL and 38RCLB shown) | 1 | Service part / kit | Amazon eBay |
| GM93396 | Maintenance Service Kit | 1 | Service part / kit | eBay $129.00 |
| GM93396-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM95122 | Kvaser CAN Bus driver cable | Service part / kit | Amazon eBay | |
| K0706 | Oil drain plug | 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 |
|---|---|---|---|
| Standby | 25% | 155.76 | 41.15 |
| Standby | 50% | 215.04 | 56.81 |
| Standby | 75% | 277.44 | 73.29 |
| Standby | 100% | 339.84 | 89.78 |
Available documents
Spec sheet (Kohler)Spec sheet — g4229 (Kohler)Spec sheet — g4304 (Kohler)Operator's manual — 30RCL engine manual (Kohler)Reference (Kohler)Reference — RES Consumer Referral Rebate (Kohler)Reference — ReferralRebateForm Editable1 (Kohler)Reference — Referral Rebate Form EDITABLE (Kohler)Reference — g6132 (Kohler)Reference — tp6906 (Kohler)Owner's manual (Kohler)Owner's manual — tp6905 (Kohler)Parts manual (Kohler)Parts manual — Kohler 2017 Referral Rebate Consumer RES (Kohler)Parts manual — Kohler 2019 RES Consumer Referral Rebate (Kohler)Parts manual — kohlerpow datasheet stepid-2757002 (Kohler)Parts manual — tp6904 (Kohler)Service manual (Kohler)Service manual — 4f53249c-825d-4340-a887-aac9199ce897 (Kohler)Service manual — Controllers tt1589 (Kohler)Service manual — PDF-202312 US Kohler Tp7202 en-US1 (Kohler)Service manual — adv9759 (Kohler)Service manual — tp7007 (Kohler)Service manual — tt1445 (Kohler)Service manual — tt1633 (Kohler)Service manual — tt1691 (Kohler)
This page was generated from the 26 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.
