HomeKohlerKohler 12 RES

Kohler 12 RES Generator Set

The Kohler 12 RES is a 12 kW (12 kVA) LPG/Natural Gas standby generator set powered by a Kohler CH740 engine. It is available at 120/240 V, 1-phase, 60 Hz and rated 50 A. It holds about 1.9 L (0.5 gal) of oil. Starting uses 1 group-26 battery rated 525 CCA at 12 V. The set measures 1123×726×804 mm (44.2×28.6×31.7 in), weighs about 182 kg (401 lb) and produces 65 dBA at 7 m.

12 kW
Standby
0.725 L
Displacement
1.9 L
Oil capacity
7
Document types

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Specifications

FuelLPG/Natural Gas
Frequency60.0 Hz
Standby power12 kW
Standby kVA12
Prime power10 kW
EmissionsEPA
ControllerADC 2100, ADC-RES, ADC-RES Advanced Digital, Advanced Digital, Advanced Digital (ADC 2100), Advanced Digital ADC-RES, Advanced Digital Features
Oil capacity1.9 L
AlternatorKohler 2F4
Voltage options120/240 V, 115/230 V
Phase1
Rated current50 A
Power factor1.0
Circuit breaker50 A
Battery group26
Battery cranking525 CCA
Battery voltage12 V
Battery quantity1
Dimensions (L×W×H)1123×726×804 mm
Dry weight182 kg
Sound level65.0 dBA @ 7 m

Engine

Kohler CH740
Oil capacity1.9 L
Displacement0.725 L
Aspirationair-cooled
Rated speed3600 rpm

Maintenance & consumables

for the Kohler CH740
ItemSpecCapacityPart #Interval
Air filter300 hr find
Fuel filter52 hr find
Oil filterPack first: complete service kit comprising air filter, spark plugs and oil filter.×1200 hr find
Belt12 hr find
Coolant52 hr
Oil2.7 L100 hr

Common questions

What is the power rating of the Kohler 12 RES?

The Kohler 12 RES is rated 12 kW standby (12.0 kVA).

What engine does the Kohler 12 RES use?

The Kohler 12 RES is powered by the Kohler CH740 engine.

What fuel does the Kohler 12 RES use?

The Kohler 12 RES runs on LPG/Natural Gas.

What is the oil capacity of the Kohler 12 RES?

The Kohler CH740 engine in the Kohler 12 RES has an oil capacity of 1.9 liters.

What alternator does the Kohler 12 RES use?

The Kohler 12 RES uses a Kohler 2F4 alternator.

Troubleshooting

60

Fault codes

CodeMeaningCauseRemedy
AFInput from a customer-supplied switch that closes when the fault is active. The generator set shuts down and will not start when the fault is active (input is grounded).Check the cause of the auxiliary fault.
HEShutdown occurs if the engine coolant temperature exceeds the maximum temperature for more than 5 seconds. This protective becomes active after the engine reaches the crank disconnect speed.Check for blocked air inlets and exhaust outlets.
LOPShutdown occurs if a low oil pressure condition exists 7 seconds after the engine has reached crank disconnect speed.Note: The low oil pressure shutdown does not protect against low oil level. Check the oil level at the engine. Check for leaks in the lubrication system.Check the oil level and add oil if the level is low.
OCShutdown occurs after 3 unsuccessful starting attempts. The crank cycle is set for three starting attempts of 15 seconds cranking and 15 seconds rest. The generator set also shuts down after 1 crank attempt if no speed signal is sensed. Shuts down 1 second after the fault is detected.Check the fuel supply, spark plug, and battery. Check for loose connections.Contact an authorized distributor/dealer for service if problem continues.
OFShutdown occurs when the governed frequency exceeds 110% of the system’s frequency setpoint for more than 1 second. This protective becomes active 30 seconds after engine start.Contact an authorized distributor/dealer for service if problem continues.
OSShutdown occurs if the engine speed exceeds 115% of the normal running speed for more than 1 second.Contact an authorized distributor/dealer for service if problem continues.
OUShutdown occurs if the voltage exceeds 120% of the voltage regulator setpoint for more than 1 second.Contact an authorized distributor/dealer for service if problem continues.
UFShutdown occurs when the governed frequency falls 1 Hz below the system’s frequency setpoint for more than 1 second.Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
UUShutdown occurs if the voltage falls below 80% of the voltage regulator setpoint for more than 1 second. This protective becomes active 30 seconds after engine start.Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
HBFault code is displayed if the engine starting battery voltage rises above 16 VDC for a 12 VDC system or above 30 VDC for a 24 VDC system for more than 10 seconds when the engine is not running. This fault condition does not inhibit engine starting.Check the battery rating and condition. Check the battery charger operation.
LBFault code is displayed if the engine starting battery voltage falls below 8 VDC for a 12 VDC system or below 16 VDC for a 24 VDC system for more than 10 seconds when the engine is not running. This fault condition does not inhibit engine starting.Check the battery rating and condition. Check the battery charger operation.Charge or replace the battery.
AFIndicates a shutdown initiated by pushing the emergency stop switch.Not used on RES models.Check the position of the emergency stop button. (TRES models only)
HEHigh engine temperature shutdownShutdown occurs if the engine coolant temperature exceeds the maximum temperature for more than 5 seconds. This function becomes active after the engine reaches the crank disconnect speed.Check for blocked air inlets and exhaust outlets.
LOPLow oil pressure shutdownShutdown occurs if a low oil pressure condition exists for more than 5 seconds. This function becomes active 30 seconds after the engine has reached crank disconnect speed (30 second inhibit). Note: The low oil pressure shutdown does not protect against low oil level. Check the oil level at the engine.Check for leaks in the lubrication system. Check the oil level and add oil if the level is low.
OCOvercrank shutdownShutdown occurs after 3 unsuccessful starting attempts. The crank cycle is set for three starting attempts of 15 seconds cranking and 15 seconds rest.Check the fuel supply, spark plug, and battery. Check for loose connections. Contact an authorized distributor/dealer for service if problem continues.
Locked rotorThe generator set also shuts down on OC if no engine rotation is sensed during cranking. Shuts down 3 seconds after the fault is detected.
OFOverfrequency shutdownShutdown occurs when the governed frequency exceeds 110% of the system’s frequency setpoint for more than 5 seconds. This function becomes active 10 seconds after engine start (10 second inhibit).Contact an authorized distributor/dealer for service if problem continues.
OSOverspeed shutdownShutdown occurs if the engine speed exceeds 110% of the normal running speed for more than 0.3 seconds.Contact an authorized distributor/dealer for service if problem continues.
OUOvervoltage shutdownShutdown occurs if the voltage exceeds 120% of the system nominal voltage for more than 2 seconds.Contact an authorized distributor/dealer for service if problem continues.
UFUnderfrequency shutdownShutdown occurs if the governed frequency falls below 54 Hz for more than 5 seconds. Shutdown also occurs if the governed frequency falls below 56.5 Hz for more than 60 seconds. This function becomes active 10 seconds after engine start. (10 second inhibit).Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
UUUndervoltage shutdownShutdown occurs if the voltage falls below 80% of the nominal system voltage for more than 10 seconds.Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
HBHigh battery voltage warningFault code is displayed if the engine starting battery voltage rises above 16 VDC for more than 30 seconds when the engine is running. Not operative during the engine crank cycle, this fault condition does not inhibit engine starting.Check the battery rating and condition. Check the battery charger operation.
LBLow battery voltage warningFault code is displayed if the engine starting battery voltage falls below 11 VDC for more than 30 seconds when the engine is not running. Not operative during the engine crank cycle, this fault condition does not inhibit engine starting.

Symptoms & remedies

SymptomCauseRemedy
Battery short circuits.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.
Accidental startingDisconnect the battery cables before working on the generator set. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery.
Battery short circuitsDisconnect 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.
Fuse blows repeatedlyReplace Auxiliary winding fuse (F1). Contact an authorized distributor/dealer if the fuse blows again.
Generator set master switch in the OFF/RESET positionMove generator set master switch to the AUTO or RUN position.
Red LED stays on for more than 24 hoursOne or more defective or damaged cells.Load test the battery and replace, if necessary.
Red and green LEDs stay on for more than 24 hoursOnboard DC systems are drawing between 1.5 and 5 amps.Turn off all DC equipment while charging.
Neither of the LEDs turn onNo AC power available at the battery charger.Connect AC power or reset the AC breaker on the main panel.
Green LED stays on when the battery is known to be lowOne or more defective or damaged cells.Load test the battery and replace, if necessary.
The generator set does not crank.Battery weak or dead, Battery charger fuse blown, Battery connections reversed or poor, Controller fuse (F3) blown, Relay interface board fuse (F2) blownCheck power to the battery charger. Recharge or replace the battery. Replace the fuse. Contact an authorized distributor/dealer for service if fuse blows repeatedly. Check the connections. Replace the fuse. Contact an authorized distributor/dealer for service if fuse blows repeatedly.
Severe electrical equipment damageWelding on generator setBefore welding on the generator set perform the following steps: (1) Remove the battery cables, negative (-) lead first. (2) Disconnect all engine electronic control module (ECM) connectors. (3) Disconnect all generator set controller and voltage regulator circuit board connectors. (4) Disconnect the engine battery-charging alternator connections. (5) Attach the weld ground connection close to the weld location.
Generator set does not crankWeak or dead batteryRecharge or replace battery. If battery is weak or dead, check battery charger fuse, power supply, and operation.
Generator set cranks but does not startNo fuelOpen (turn on) manual fuel valve. Check fuel supply tank (LP).
Stops suddenlyFault shutdownCheck for a fault shutdown code on the controller’s LED display. Correct the fault and then move the generator set master switch to OFF/RESET to reset the controller.
No fuelTurn on fuel supply.
Engine overheatedCheck air intake, fuel adjustment, oil level, air inlet/outlet.
Low oil pressure (LOP) switchAttempt startup. If unit shuts down, remove lead from LOP switch and reset controller. A successful restart attempt indicates a faulty LOP shutdown switch. Note: Check engine oil pressure before performing test and/or replacing LOP shutdown switch.
Fuel valve/fuel regulatorCheck regulator/valve operation.
Engine overloadedReduce electrical load.
Lacks powerAir intake restriction, inadequate cooling. Inspect air intakes and exhaust for obstructions. Check air cleaner.
Generator overloadedReduce load.
Engine not running at rated rpmCheck controller settings for unit configuration (UC) and engine type (EC). Adjust governor speed.
Engine power lossRefer to the Engine Service Manual for troubleshooting and repair instructions.
Governor malfunction or misadjustmentTest/readjust governor.
Low output voltageIncorrect controller configuration, Incorrect controller voltage settingsCheck and adjust the controller configuration parameters. Check and adjust the controller voltage settings.
Alternator or control system problemPerform separate excitation procedure to isolate the problem to the alternator or the control system. Then troubleshoot the alternator or control system components as follows.
No output voltageAC output circuit breaker open, Alternator or control system problemCheck for AC voltage on the generator side of circuit breaker. If there is AC voltage on the generator side of the breaker, then a problem in the load circuits is causing the line circuit breaker to trip. Check for and correct short circuits or overloading on the load side before resetting the circuit breaker. Perform separate excitation procedure to isolate the problem to the alternator or the control system. Then troubleshoot the alternator or control system components as follows.
Open wiring, terminal, or pin in buildup circuit or SCR module circuitCheck continuity.
Brushes problemInspect brushes and replace if worn. Check for brushes sticking in brush holder or broken brush spring.
Rotor connections problemCheck for open circuit in rotor connection circuit (leads FN and FP to SCR and RIB).
Rotor slip rings dirty or corrodedCheck slip ring condition.
Stator problemCheck voltage and continuity.
Engine not running smoothlySee “Generator set operates erratically,” this table
Broken or damaged vibromount(s)Check and replace as necessary.
Loose or vibrating sheet metal/housingRetighten screws, replace rivets.
Exhaust piping or air inlets/outlets not securely installedInspect for loose parts and secure if necessary.
Excessive engine/generator vibrationCheck, rotor, crankshaft, bearing, etc. (disassembly of engine and/or alternator may be required).

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

Parts

139
Part #DescriptionQtySystem
12 050 01-SOil Filter8Oil filter PartsGeek kuduparts $32.00
12 132 02-SSpark plug2Spark plug PartsGeek
24 029 124-SAdapter, Oil Filter1Oil filter PartsGeek
24 032 19-SSeal, oil front1Seal PartsGeek
24 050 01-SFilter, breather8Filter PartsGeek
24 083 08-SElement, air filter1Air filter PartsGeek
24 083 09-SElement, air filter1Air filter element PartsGeek
24 136 08-SNipple, Oil Filter1Oil filter PartsGeek
24 153 01-SO-ring1Seal PartsGeek
24 153 08-SO-ring1Seal PartsGeek
24 153 21-SO-ring, oil cooler1Seal PartsGeek
24 153 33-SSeal, Oil Pump Cover1Seal PartsGeek
24 153 34-SO-Ring, Oil Pick-Up1Seal PartsGeek
24 381 13-SPick-Up Assembly, Oil1Pump PartsGeek
24 393 51-SKit, oil pump assembly (includes items 12, 13)1Pump PartsGeek
24 393 70-SPump Assembly, Oil1Pump PartsGeek
24 590 01-AOil Cooler, 14RCA/LOil cooler PartsGeek
241927Kit, speed sensor1Sensor PartsGeek
25 032 06-SSeal, oil1Seal PartsGeek
25 099 26-SSwitch, oil pressure1Sensor PartsGeek
25 132 14-SSpark plug (RFI)2Spark plug PartsGeek
25 435 06-SKit, starter solenoid1Kit PartsGeek
269373Alternator Assembly5Alternator PartsGeek
3580723/8"-16 UNC-2A THD Thrubolt1Thrubolt PartsGeek
358359Coupling, stepper motor1Stepper motor coupling PartsGeek
52 099 08-SSwitch, oil pressure1Sensor PartsGeek
62 590 01Oil Cooler, 20RCA/LOil cooler PartsGeek
ADV-6823-AAir Filter, Spark Plug Location1Air filter PartsGeek
BKR-8YU11Spark Plug, CH20/CH7404Spark plug eBay PartsGeek
GM101737Lifting bars4Lifting bar PartsGeek
GM103159Oil, Synthetic Quart 5W303Fluid Amazon eBay $155.00 PartsGeek
GM103743Emergency Stop Switch (optional)1Emergency stop switch PartsGeek
GM110973-CMPPressure portCoolant filter PartsGeek
GM111084Shutdown Switch1Shutdown switch PartsGeek
GM114161Fuel selectorAir filter PartsGeek
GM118705Spark Plugs1Spark plug PartsGeek
GM28823Sensor, temperature (oil)1Sensor PartsGeek
GM29253Fuel orifice fittingFuel filter PartsGeek
GM29253-GA2Controller Wiring Diagram1Controller wiring diagram PartsGeek
GM29358-BPoint-to-Point Wiring Diagram, Single Phase1Point-to-point wiring diagram PartsGeek
GM515593/8"-16 UNC-2A THD Thrubolt1Thrubolt PartsGeek
GM629827/16"-14 UNC-2A THD Thrubolt1Thrubolt PartsGeek
GM761927/16"-14 UNC-2A THD Thrubolt1Thrubolt PartsGeek
GM884015/16"-24UNF-2A THD Thrubolt1Thrubolt PartsGeek
GM90304Revised RDC2 Controller1Display PartsGeek
RSP-FT-02-US-91Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter.Air filter PartsGeek
RSP-FT-04-US-91Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter.Air filter PartsGeek
X-386-109Line, flex (23.5")1Hose PartsGeek
X-386-112Line, flex (50.0")1Hose PartsGeek
X-386-128Line, flex (42.0")1Hose PartsGeek
12RESKOHLER 12RES generatorService part / kit PartsGeek
223316Fuse, 10 A, 250 V5Service part / kit PartsGeek
230578Hex Head Bolt (Grade 5)Service part / kit PartsGeek FridayParts $24.68
24 083 02-SPre-cleaner8Service part / kit PartsGeek
24 083 05-SPre-cleaner8Service part / kit PartsGeek
24 594 66-SCooler, Oil & Diverter Assembly1Service part / kit PartsGeek
292937Fuse, 20 A, 250 V5Service part / kit PartsGeek
F-228605Kit, voltage regulator1Service part / kit PartsGeek
GM10064PCB assembly (relay controller)1Service part / kit PartsGeek
GM29671PCB assy, relay board 12V1Service part / kit PartsGeek
ML25KZAGKohler 25 HP CH740 Gasoline Engine1Service part / kit PartsGeek
SBECBA24Bell Alarm1Service part / kit PartsGeek
SBECDMR24Alarm Contact Relay1Service part / kit PartsGeek
X-125-22Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-23Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-24Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-25Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-26Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-27Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-28Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-29Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-3Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-30Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-31Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-32Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-33Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-34Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-35Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-36Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-38Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-39Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-40Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-43Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-44Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-125-5Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-15Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-17Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-18Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-19Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-2Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-20Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-21Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-22Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-23Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-129-24Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-10Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-11Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-12Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-14Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-16Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-17Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-18Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-2Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-20Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-21Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-25Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-6Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-7Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-8Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-465-9Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-11Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-12Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-2Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-3Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-4Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-5Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6024-8Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-1Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-10Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-11Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-12Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-13Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-14Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-16Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-17Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-18Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-19Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-2Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-20Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-21Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-22Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-25Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-3Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-4Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-5Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-6Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-7Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-8Hex Head Bolt (Grade 5)Service part / kit PartsGeek
X-6238-9Hex 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

RatingLoadL/hgal/h
25%77.0
50%93.0
75%113.0
100%132.0
Prime
Prime25%
Prime50%
Prime60%
Prime75%
Prime100%
Standby
Standby25%
Standby50%
Standby60%
Standby75%
Standby100%

Available documents

Brochure (Kohler)Brochure — GSA Product List (Kohler)Brochure — RES Consumer Referral Rebate (Kohler)Brochure — Referral Rebate Form EDITABLE (Kohler)Brochure — g6130 (Kohler)Spec sheet (Kohler)Spec sheet — 12RES (Kohler)Spec sheet — 85-12-kw-Kohler-Residential-Generator (Kohler)Spec sheet — Kohler 12RES New g4248 (Kohler)Spec sheet — Spec Sheet Res (Kohler)Spec sheet — g4097 (Kohler)Spec sheet — g4248 (Kohler)Installation manual — adv9747 (Kohler)Installation manual — g18118 (Kohler)Installation manual — tp6328 (Kohler)Installation manual — tp6514 (Kohler)Installation manual — tp6792 (Kohler)Installation manual — tp6967 (Kohler)Installation manual — tt1364 (Kohler)Installation manual — tt1486 (Kohler)Reference — FinalGSAPriceListEffective 3-20-2023 (Kohler)Reference — GSAPriceList (Kohler)Reference — Kohler 2017 Referral Rebate Consumer RESReference — Kohler 2019 RES Consumer Referral RebateReference — ReferralRebateForm Editable1 (Kohler)Reference — g18146 (Kohler)Reference — g260823 (Kohler)Reference — g6127 (Kohler)Reference — tp6264 (Kohler)Reference — tp6766 (Kohler)Reference — tp6766cmp (Kohler)Reference — tp7004 (Kohler)Owner's manual — tp6331 (Kohler)Owner's manual — tp6515 (Kohler)Parts manual (Kohler)Service manual — 12 RES Operation (Kohler)Service manual — 8.5 12 RES Service (Kohler)Service manual — Operation Installation Res (Kohler)Service manual — PDF-202312 US Kohler Tp6967 en-US1 (Kohler)Service manual — tp6196 (Kohler)