Specifications
| Fuel | Natural Gas |
|---|---|
| Frequency | 60.0 Hz |
| Controller | RDC2 generator set |
| Oil capacity | 1.9 L |
| Alternator | Kohler PowerBoost (2-pole, Class H insulation) |
| Voltage options | 120 V, 240 V |
| Phase | single or three-phase |
Maintenance & consumables
for the Kohler CH740| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 300 hr | find | ||
| Fuel filter | — | 52 hr | find | ||
| Oil filter | ×1 | tp6519 | 200 hr | eBay $20.15 PartsGeek | |
| Belt | — | 12 hr | find | ||
| Coolant | — | 52 hr | |||
| Oil | 2.7 L | — | 100 hr |
Common questions
What engine does the Kohler 14RCA/L use?
The Kohler 14RCA/L is powered by the Kohler CH740 engine.
What fuel does the Kohler 14RCA/L use?
The Kohler 14RCA/L runs on Natural Gas.
What is the oil capacity of the Kohler 14RCA/L?
The Kohler CH740 engine in the Kohler 14RCA/L has an oil capacity of 1.9 liters.
What alternator does the Kohler 14RCA/L use?
The Kohler 14RCA/L uses a Kohler PowerBoost alternator. It has 2 poles. Insulation class H.
What oil filter does the Kohler 14RCA/L use?
The Kohler 14RCA/L uses oil filter part number tp6519.
Troubleshooting
23Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| BusDeadLive | The bus is measured to be dead when one of the generators is supposed to be supplying voltage to the bus (closed contactor). | Bus metering V9A and V9B connections to V9 of paralleling protection harness are connected incorrectly. | |
| BusLiveDead | The bus is measured to be live when no generators are connected to it (both contactors open). | Bus metering V9A and V9B connections to V9 of paralleling protection harness are connected incorrectly. | |
| CfgModelNum | The two generators that are intended to be paralleled have incompatible model numbers. | Incorrect configuration of one of the generators. Different generator types. The paralleled generator sets must be the same kW model. (i.e. two 14 kW or two 20 kWor 26 kW models). | |
| CfgSysVolt | The system voltage of the two generators intended to be paralleled is not the same. | One of the two generators is incorrectly configured. Intermittent connections on RBUS network wiring. | |
| ConCheckFail | Failure to Auto-Discover APM connections. | Wires 9A and 9B crossed between the generators. Wires 9A or 9B not connected. | |
| ConNotDeterm | APM connection auto-discovery is not complete. This means that the generator does not know which contactor is connected to it. | Generators not yet started in RUN with other generator in OFF. See the APM instruction sheet for instructions to perform the auto-discovery procedure. | |
| ContactorOk | Successful auto-discovery of APM connections. | Auto-discovery was activated by placing other generator in OFF and this generator in RUN. | |
| ErraticSig | The power metering on this controller gives a signal that is not consistent with the system configuration. Reversing the power direction does not resolve the problem. | Bad wiring to the CT. Too much tension on wires from the CT to the controller. | |
| LossOfComAPM | The Automatic Paralleling Module has stopped communicating on RBUS. (An APM was detected on the RBUS network but is no longer communicating). | APM is unplugged. Primary controller is powered down. Check the battery connections. See previous page for more information. Intermittent connections on RBUS network wiring. | |
| LossOfComm2 | The primary controller has lost communication with the secondary controller. (A secondary controller was detected, then communication was lost.) | RBUS disconnected, secondary controller battery disconnected, updating firmware in secondary controller, or intermittent RBUS connections. | |
| LossOfField | This generator has absorbed more than 25% reactive power (magnetic excitation current) for 20 seconds. | Generator voltage on this generator is not calibrated correctly. Generator voltage on other generator is not calibrated correctly. Bus voltage on this generator is not calibrated correctly. Bus voltage on the other generator is not calibrated correctly. | |
| MeteringOk | The generator has verified that the metering is connected correctly and that the direction is consistent with expected power direction. | Status message indicates that the CT is connected to the generator correctly. | |
| MeterUnknown | This generator does not know if the metering is connected or the orientation of the connection. This means that the generators can’t share load accurately until this information is known. | System commissioning and startup not yet complete. See the APM instructions. | |
| NoCurrent | The generator has applied load (using the other generator) and has observed no current on the power sensing inputs. | The CT is not connected to the controller. The output leads from the generator do not go through the CT in the correct direction. See the APM instructions. | |
| SyncFailure | The generator has been attempting to synchronize for over 2 minutes without success. | Generator is hunting. Advanced speed control settings need adjustment. Load is changing frequently to disturb the online generator. | |
| Volts L1-L2 | Generator voltage high. Output voltage exceeds 120% of the system nominal voltage for more than 2 seconds. | Contact an authorized distributor/dealer for service. | |
| Volts L1-L2 | Generator voltage low. Output voltage falls below 80% of the nominal system voltage for more than 10 seconds. | Reduce the load and restart the generator set. Model 20RCA/20RCAL only: Check enclosure thermostat and reset if tripped. See Section 5.6. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Battery acid can cause blindness and burn skin. | If battery acid splashes in the eyes or on the skin, immediately flush the affected area for 15 minutes with large quantities of clean water. Seek immediate medical aid in the case of eye contact. | |
| Battery acid is electrically conductive and corrosive. | Add 500 g (1 lb.) of bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water and mix the neutralizing solution. Pour the neutralizing solution on the spilled battery acid and continue to add the neutralizing solution to the spilled battery acid until all evidence of a chemical reaction (foaming) has ceased. Flush the resulting liquid with water and dry the area. | |
| Short circuits can cause bodily injury and/or equipment damage. | Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery. Never connect the negative (–) battery cable to the positive (+) connection terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together. | |
| D burn skin. | Always wear splashproof safety goggles, rubber gloves, and boots when servicing the battery. If battery acid splashes in the eyes or on the skin, immediately flush the affected area for 15 minutes with large quantities of clean water. Seek immediate medical aid in the case of eye contact. | |
| Three unsuccessful starting attempts. | Check the fuel supply, spark plug, and battery. Check for loose connections. | Contact an authorized distributor/dealer for service. |
| Engine speed sensor has failed or engine stalled. | Contact an authorized distributor/dealer for service. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
132| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 12 050 01-S | Filter, oil | 1 | Oil filter | PartsGeek |
| 12 132 02-S | Spark plug | 2 | Spark plug | PartsGeek |
| 24 029 124-S | Adapter, Oil Filter | 1 | Oil filter | PartsGeek |
| 24 032 19-S | Seal, Oil (Helix Lip) | 1 | Seal | PartsGeek |
| 24 050 01-S | Filter, breather | 8 | Filter | PartsGeek |
| 24 083 08-S | Element, air filter | 1 | Air filter | PartsGeek |
| 24 083 09-S | Element, air filter | 1 | Air filter | PartsGeek |
| 24 136 08-S | Nipple, Oil Filter | 1 | Oil filter | PartsGeek |
| 24 153 01-S | O-ring | 1 | Seal | PartsGeek |
| 24 153 08-S | O-ring | 1 | Seal | PartsGeek |
| 24 153 21-S | O-Ring, Oil Cooler | 1 | Seal | PartsGeek |
| 24 153 33-S | Seal, Oil Pump Cover | 1 | Seal | PartsGeek |
| 24 153 34-S | O-Ring, Oil Pick-Up | 1 | Seal | PartsGeek |
| 24 381 13-S | Pick-Up Assembly, Oil | 1 | Pump | PartsGeek |
| 24 393 51-S | Kit, oil pump assembly (includes items 12, 13) | 1 | Pump | PartsGeek |
| 24 393 70-S | Pump Assembly, Oil | 1 | Pump | PartsGeek |
| 24 590 01-A | Oil Cooler, 14RCA/L | Oil cooler | PartsGeek | |
| 241927 | Sensor, speed | 1 | Sensor | PartsGeek |
| 25 032 06-S | Oil Seal | 1 | Seal | PartsGeek |
| 25 099 26-S | Switch, oil pressure | 1 | Sensor | PartsGeek |
| 25 132 14-S | Spark plug (RFI) | 2 | Spark plug | PartsGeek |
| 25 435 06-S | Kit, starter solenoid | 1 | Kit | PartsGeek |
| 269373 | Alternator Assembly | 5 | Alternator | PartsGeek |
| 292937 | Fuse, 20 A, 250 V | 5 | Fuse | PartsGeek |
| 358072 | 3/8"-16 UNC-2A THD Thrubolt | 1 | Thrubolt | PartsGeek |
| 52 099 08-S | Switch, oil pressure | 1 | Sensor | PartsGeek |
| 62 590 01 | Oil Cooler, 20RCA/L | Oil cooler | PartsGeek | |
| ADV-6823-A | Air Filter, Spark Plug Location | 1 | Air filter | PartsGeek |
| BKR-8YU11 | Spark Plug, CH20/CH740 | 4 | Spark plug | eBay PartsGeek |
| GM101737 | Lifting bars | 4 | Lifting bar | PartsGeek |
| GM103159 | Oil, Synthetic Quart 5W30 | 3 | Fluid | Amazon eBay $155.00 PartsGeek |
| GM103743 | Emergency Stop Switch (optional) | 1 | Emergency stop switch | PartsGeek |
| GM111084 | Shutdown Switch | 1 | Shutdown switch | PartsGeek |
| GM28823 | Sensor, oil temperature | 1 | Sensor | PartsGeek |
| GM29253-GA2 | Controller Wiring Diagram | 1 | Controller wiring diagram | PartsGeek |
| GM29358-B | Point-to-Point Wiring Diagram, Single Phase | 1 | Point-to-point wiring diagram | PartsGeek |
| GM51559 | 3/8"-16 UNC-2A THD Thrubolt | 1 | Thrubolt | PartsGeek |
| GM90969-KP1-QS | 3" Concrete Mounting Pad (only comes in quantities of 5) | Physical | PartsGeek | |
| GM90969-KP2-QS | 4" Concrete Mounting Pad (only comes in quantities of 5) | Physical | PartsGeek | |
| GM92228-KP1-QS | 3" Concrete Mounting Pad (only comes in quantities of 5) | Physical | PartsGeek | |
| GM92228-KP2-QS | 4" Concrete Mounting Pad (only comes in quantities of 5) | Physical | PartsGeek | |
| RSP-FT-02-US-91 | Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter. | Air filter | PartsGeek | |
| RSP-FT-04-US-91 | Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter. | Air filter | PartsGeek | |
| 12RES | KOHLER 12RES generator | Service part / kit | PartsGeek | |
| 223316 | Fuse, 10 A, 250 V | 5 | Service part / kit | PartsGeek |
| 230578 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek FridayParts $24.68 | |
| 24 083 02-S | Pre-cleaner | 8 | Service part / kit | PartsGeek |
| 24 083 05-S | Pre-cleaner | 8 | Service part / kit | PartsGeek |
| 24 594 66-S | Cooler, Oil & Diverter Assembly | 1 | Service part / kit | PartsGeek |
| F-228605 | Kit, voltage regulator | 1 | Service part / kit | PartsGeek |
| GM10064 | PCB assembly (relay controller) | 1 | Service part / kit | PartsGeek |
| GM29671 | PCB assy, relay board 12V | 1 | Service part / kit | PartsGeek |
| GM90304 | Revised RDC2 Controller | 1 | Service part / kit | PartsGeek |
| ML25KZAG | Kohler 25 HP CH740 Gasoline Engine | 1 | Service part / kit | PartsGeek |
| SBECBA24 | Bell Alarm | 1 | Service part / kit | PartsGeek |
| SBECDMR24 | Alarm Contact Relay | 1 | Service part / kit | PartsGeek |
| X-125-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-23 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-125-24 | Bolt, Hex Cap | 3 | Service part / kit | PartsGeek |
| X-125-25 | Hex Head Bolt (Grade 5) | 1 | Service part / kit | PartsGeek |
| X-125-26 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-27 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-28 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-29 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-3 | X-125-3 | 2 | Service part / kit | PartsGeek |
| X-125-30 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-31 | Hex Head Bolt (Grade 5) | 1 | Service part / kit | PartsGeek |
| X-125-32 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-33 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-34 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-125-35 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-36 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-38 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-39 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-40 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-43 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-44 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-15 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-19 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-2 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-23 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-24 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-10 | Screw, H.C. | 2 | Service part / kit | PartsGeek |
| X-465-11 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-14 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-16 | Screw, HC | 1 | Service part / kit | PartsGeek |
| X-465-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-2 | Bolt, hex cap, 1/4-20 x 0.625 | 4 | Service part / kit | PartsGeek |
| X-465-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-25 | Hex Head Bolt (Grade 5) | 1 | Service part / kit | PartsGeek |
| X-465-6 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-465-7 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-465-8 | Hex Head Bolt (Grade 5) | 3 | Service part / kit | PartsGeek |
| X-465-9 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-11 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-2 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-6024-3 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-6024-4 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-8 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-6238-1 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-10 | Bolt, Hex Cap | 2 | Service part / kit | PartsGeek |
| X-6238-11 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-6238-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-13 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-14 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-16 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-19 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-2 | Hex Head Bolt (Grade 5) | 2 | Service part / kit | PartsGeek |
| X-6238-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-25 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-3 | Hex Head Bolt (Grade 5) | 2 | Service part / kit | PartsGeek |
| X-6238-4 | Bolt, hex cap | 3 | Service part / kit | PartsGeek |
| X-6238-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-6 | Screw, hex cap | 1 | Service part / kit | PartsGeek |
| X-6238-7 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-8 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-9 | Hex Head Bolt (Grade 5) | Service 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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| 25% | |||
| 50% | |||
| 75% | |||
| 100% | |||
| Prime | |||
| Standby |
Available documents
Brochure — g6155 (Kohler)Installation manual — tp7091 (Kohler)Service manual — 02a9ba2b-6e2d-4c5a-98a2-5b321441a097 (Kohler)Service manual — PDF-tp7092 (Kohler)