Specifications
| Fuel | gasoline |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 9 kW |
| Standby kVA | 9 |
| Emissions | EPA |
| Controller | DC2, RDC2 |
| Oil capacity | 1.9 L |
| Alternator | 2F3 (2-pole, Class H insulation) |
| Voltage options | 120 V, 240 V |
| Phase | 1 |
| Rated current | 37.5 A |
| Power factor | 1.0 |
| Circuit breaker | 50 A |
| Battery group | 51 |
| Battery cranking | 500 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Dimensions (L×W×H) | 777×712×824 mm |
| Dry weight | 194 kg |
| Sound level | 67.0 dBA @ 7 m |
Maintenance & consumables
for the Kohler 10RESV engine| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | — | 100 hr | |||
| Oil | 1.9 L | — | 100 hr |
Service intervals
18| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Oil level | Check | 8 hr | Before each use and every 8 hours | |
| engine oil level | Check | 8 hr | Check before each use; for extended operation check every 8 hours | |
| Oil | Change | 100 hr | 12 mo | Yearly or 100 hours |
| Oil filter | Replace | 100 hr | 12 mo | Yearly or 100 hours |
| Valve lash (8RESV/L) | Adjust | 100 hr | 100 hours | |
| valve lash (8RESV) | Check | 100 hr | 8RESV models only; requires authorized service | |
| Air cleaner | Replace | 150 hr | 12 mo | Yearly or 150 hours |
| air cleaner | Other | 150 hr | 12 mo | Service more frequently under dusty conditions |
| engine oil and filter | Change | 400 hr | 12 mo | Use 5W-30 synthetic oil |
| Crankcase breather hose | Clean | 500 hr | 12 mo | Yearly or 500 hours |
| Spark plugs | Replace | 500 hr | 12 mo | Yearly or 500 hours |
| Stepper motor coupling and bushing | Replace | 500 hr | 500 hours | |
| Valve lash (10/12RESV/L) | Adjust | 500 hr | 500 hours | |
| valve lash (10/12RESV) | Check | 500 hr | 10/12RESV models only; requires authorized service | |
| Battery cleaner operation | Check | 1 mo | Monthly | |
| Battery electrolyte level | Check | 12 mo | Yearly | |
| Fuel flexible lines | Inspect | 3 mo | Quarterly | |
| battery | Check | 1 mo | Monthly for first year; annually thereafter |
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
8| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Spark plug gap | Spark plug gap | 0.508 | mm | All models |
| Speed | Frequency regulation steady state | 1.0% | % | |
| Temperature | Carburetor heater thermostat OFF | 16 ± 3 | C (60 ± 5F) | |
| Temperature | Carburetor heater thermostat ON | 4 ± 4 | C (40 ± 7F) | |
| Temperature | Thermostat OFF | 16 ± 3 | °C | Thermostat OFF (60 ± 5°F) |
| Temperature | Thermostat ON | 4 ± 4 | °C | Thermostat ON (40 ± 7°F) |
| Torque | Spark plug installation torque | 24.4 - 29.8 | Nm | Installation |
| Voltage | Voltage regulation (no-load to full-load) | ±1.0% | RMS |
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 |
|---|---|---|---|---|---|
| Engine oil | Full Pressure system | 1.9 L | With filter | ||
| Engine oil | 5W-30 | API Service Class SG, SH, or SJ synthetic | Synthetic oil oxidizes and thickens less; recommended for cleaner intake valves and pistons | ||
| Engine oil | 5W-30 API SG/SH/SJ synthetic | API SG/SH/SJ | Synthetic oil recommended | ||
| Fuel | Gasoline | Unleaded gasoline | LP or natural gas capable |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
12RDC2 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
Obtain DC2 Controller Password and Serial Number diagnostic
- Press OFF and verify that the generator set is not running.
- Press and hold the Exercise button until Press Again to Reset OnCue Plus PW is displayed.
- Release the Exercise button and press it again within 5 seconds.
- Write down the serial number (S/N) and password.
Obtain RDC/DC Controller Password diagnostic
- Press OFF to place the controller into OFF mode.
- Press the down arrow button (RDC) or exercise button (DC) 5 times.
- Note the four-digit code displayed on the controller; this is the controller password.
- Write down the password and press OFF to clear the display.
Obtain RDC2 or VSC Controller Password and Serial Number diagnostic
- Press the controller down arrow button to navigate to the Networking Information menu.
- Follow the reset password procedure shown in Figure 1-3.
- Write down the serial number (S/N) and password displayed for 10 seconds.
Power Cycle the Controller diagnostic
- Disconnect all input power for two minutes to allow capacitors to discharge.
- Remove the battery negative cable or disconnect P1 from the back of the controller.
- Disconnect the battery charger 120 VAC input power supply or disconnect P5 from the back of the controller.
- Unplug the USB mini-B connector from the front of the controller if plugged in.
- Wait two minutes, then reconnect power, hooking up battery power (P1) first.
Use Telnet to Check Server Connection diagnostic
Tools: Command prompt, Telnet Client
- Activate Telnet Client on the computer if necessary.
- Open a command prompt window.
- Enter telnet devices.kohler.com 5253.
- Successful connection displays the symbols shown in Figure 3-8.
Connect OnCue Plus for RDC/DC installation
- Install the Ethernet option board on the generator set controller. See TT-1566.
- Connect a network cable from the Ethernet board to your router or modem.
Connect OnCue Plus for RDC2/DC2/VSC installation
- Set the controller password before connecting the generator set Ethernet cable to the router.
- Connect the RJ45 inline connector included in the OnCue Plus kit to the Ethernet cable inside the generator enclosure.
- Connect one end of the customer-provided network cable to the RJ45 connector.
- Connect the other end of the network cable to the customer router or modem.
Install Carburetor Heater, 17/18/20 kW Models installation
⚠ Accidental starting can cause severe injury or death; disconnect battery cables before working on the generator set, negative lead first.
⚠ Hazardous voltage will cause severe injury or death; disconnect all power sources before opening the enclosure.
⚠ Hot surfaces: disconnect power to the heater and allow it to cool before servicing.
- Open enclosure roof; locate controller and air cleaner.
- Turn off the generator set (master switch or controller OFF button, per model).
- Disconnect AC power to the generator set at the distribution panel breaker.
- Disconnect the starting battery, negative lead first.
- Check nameplate model/spec number and locate heater position per Figure 4.
- Remove the air cleaner cover if needed for access.
- Disconnect the heating element from the power cord at the plug connector.
- Insert the heating element into the threaded opening on the engine and tighten.
- Reconnect the power cord to the heater.
- Route and connect the power cord per the applicable model wiring option (steps 10-12).
- Replace the air cleaner cover if it was removed.
- Affix decal GM22387 onto the air cleaner cover.
- Reconnect the starting battery, negative lead last.
- Reconnect AC power by closing the distribution panel breaker.
- For standby operation, move switch to AUTO and reinstall enclosure panels.
Install Carburetor Heater, Models 8-12RESV/RESVL installation
⚠ Accidental starting can cause severe injury or death; disconnect battery cables before working on the generator set, negative lead first.
⚠ Hazardous voltage will cause severe injury or death; disconnect all power sources before opening the enclosure.
⚠ Hot surfaces: install the heater before connecting it to power; disconnect power and allow it to cool before servicing.
- Open the enclosure roof.
- Press the OFF button on the generator set controller.
- Disconnect AC power to the generator set at the distribution panel breaker.
- Disconnect the starting battery, negative lead first.
- Locate the carburetor heater per Figure 14; remove side panel or air cleaner cover if needed.
- Remove and discard the M8 bolt from the carburetor at the heater location.
- Thread adapter GM91361 into the M8 hole.
- Insert carburetor heater GM57968 into the adapter and tighten.
- Connect the extension cord (GM91360 or 3-way GM95628) to the heater cord.
- Route the cord to the AC receptacle, securing away from throttle linkage and exhaust.
- Plug the cord into the AC receptacle on the generator bulkhead.
- Affix decal GM22387 onto the air cleaner cover.
- Reconnect the starting battery, negative lead last.
- Reconnect AC power by closing the distribution panel breaker.
- Press AUTO for standby operation and reinstall enclosure panels.
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 size generator is the Kohler 10RESV?
The Kohler 10RESV is rated 9 kW standby (9.0 kVA).
What engine is in the Kohler 10RESV?
The Kohler 10RESV is powered by the Kohler 10RESV engine engine.
What fuel does the Kohler 10RESV use?
The Kohler 10RESV runs on gasoline.
What is the oil capacity of the Kohler 10RESV?
The Kohler 10RESV engine engine in the Kohler 10RESV has an oil capacity of 1.9 liters.
How loud is the Kohler 10RESV?
The Kohler 10RESV is rated at 67.0 dBA at 7 m, per the manufacturer specification sheet.
How much does the Kohler 10RESV weigh?
The Kohler 10RESV has a dry weight of 194 kg (427 lb).
What voltage does the Kohler 10RESV produce?
The Kohler 10RESV is offered in 120 V, 240 V, 1-phase.
What size battery does the Kohler 10RESV need?
The Kohler 10RESV uses 1 battery, 12 V each, 500 CCA, group 51, per the manufacturer specification sheet.
What alternator does the Kohler 10RESV use?
The Kohler 10RESV uses a 2F3 alternator. It has 2 poles. Insulation class H.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Controller display backlight is off | Backlight turns off after about 1 minute with no activity | Backlight will turn on when a button is pressed or the generator set starts |
| Controller display is off | Low or no battery voltage | Check connections; Check generator set battery |
| The generator set does not crank | Battery weak or dead | Recharge or replace the battery |
| The generator set does not crank | Battery connections reversed or poor | Check the connections |
| The generator set does not crank | Fault shutdown | Check the controller display for fault messages. See Section 2.5. Correct the fault condition and reset the controller |
| The generator set does not crank | Generator set in the OFF mode | Press the RUN button to start the engine or press AUTO to allow remote starting |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Kohler 10RESV troubleshooting guide (30 entries) →
Repair guides
15- Add New Generator
- Air Cleaner Service (8RESV/RESVL)
- Connect OnCue Plus for RDC2/DC2/VSC
- Control PIM Outputs
- Install Carburetor Heater, 17/18/20 kW Models
- Install Carburetor Heater, Models 8-12RESV/RESVL
- Install OnCue Plus Wireless for RDC2/DC2
- Installation Procedure, 17/18/20 kW Models
- Installation Procedure, Models 8-12RESV/RESVL
- Obtain DC2 Controller Password and Serial Number
- Obtain RDC/DC Controller Password
- Obtain RDC2 or VSC Controller Password and Serial Number
- Power Cycle the Controller
- Start Exercise
- Use Telnet to Check Server Connection
Step-by-step procedures compiled from the Kohler service manual for this model.
Parts
15| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 239789 | Decal, notice, neutral bonded to frame | 1 | Decals | buy |
| 255882 | Decal, standby service | 1 | Decals | eBay |
| 257438 | Decal, danger moving rotor | 1 | Decals | eBay |
| 294520 | Decal | 1 | Decal | Amazon eBay |
| GM15299 | Decal, rainproof enclosure | 1 | Decals | buy |
| GM29924 | Decal, notice, fuel connection | 1 | Decals | buy |
| GM47407 | Decal, fuel type | 1 | Decals | buy |
| GM53084 | Decal, power breaker | 1 | Decals | buy |
| GM60175 | Decal, warning non gfci outlet | 1 | Decals | buy |
| GM75579 | Decal, Kohler logo | 1 | Decals | buy |
| GM75728 | Decal, fuel type | 1 | Decals | buy |
| GM81760 | Decal, Kohler maintenance | 1 | Decals | buy |
| GM81763 | Decal, Notice | 1 | Decals | buy |
| 249808 | Generator Set | 1 | Service part / kit | Amazon eBay |
| 249809 | Generator Set | 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 |
|---|---|---|---|
| Exercise | 100% | 2.1 | 0.55 |
| Standby | 3.4 | 120.0 | |
| Standby | 25% | 10.22 | 2.7 |
| Standby | 50% | 12.87 | 3.4 |
| Standby | 75% | 15.52 | 4.1 |
| Standby | 100% | 19.31 | 5.1 |
Available documents
Spec sheet (Kohler)Spec sheet — Kohler.12RESV.Spec.g4241 (Kohler)Spec sheet — Kohler.12RESVL.SPECS.g4242 (Kohler)Operator's manual (Kohler)Operator's manual — OnCue-Plus-Operation-Manual (Kohler)Reference (Kohler)Reference — 21-03R Air-Cooled Residential Product Updates - 2021 (Kohler)Reference — RES Consumer Referral Rebate (Kohler)Reference — ReferralRebateForm Editable1 (Kohler)Reference — Referral Rebate Form EDITABLE (Kohler)Reference — Rotor Stator Reading Form (Kohler)Reference — TP-6984 (Kohler)Reference — g4254 (Kohler)Reference — tp6984fr (Kohler)Owner's manual — tp6880 (Kohler)Owner's manual — tp6880fr (Kohler)Parts manual (Kohler)Parts manual — Kohler 2017 Referral Rebate Consumer RES (Kohler)Parts manual — Kohler 2019 RES Consumer Referral Rebate (Kohler)Parts manual — tt1589 (Kohler)Service manual — 14 20 RESA Parts (Kohler)Service manual — Controllers tt1589 (Kohler)Service manual — TT-1482 (Kohler)Service manual — tp6879 (Kohler)Service manual — tp6881 (Tp-6881)Service manual — tp6984 (Kohler)Service manual — tt1482 (Kohler)Service manual — tt1619 (Kohler)Service manual — tt1634 (Kohler)
This page was generated from the 29 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.