Kohler 6VSG User manual

Models:
6VSG
24VDC
36VDC
48VDC
Controller:
VSC
DC Generator Sets
TP-6843 12/21d
Operation

2 TP-6843 12/21
WARNING: This product can expose you to chemicals, including carbon monoxide and
benzene, which are known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information go to www.P65warnings.ca.gov
Product Identification Information
Product identification numbers determine service parts. Record the product identification numbers in the spaces below
immediately after unpacking the products so that the numbers are readily available for future reference. Record field-installed
kit numbers after installing the kits.
Generator Set Identification Numbers
Record the product identification numbers from the engine nameplate(s).
Model Designation _________________________________________________________
Specification Number _______________________________________________________
Serial Number: ____________________________________________________________
Controller Identification
Record the controller description from the generator set operation manual, spec sheet, or sales invoice.
Controller Description________________________________________________________
Engine Identification
Record the product identification information from the engine nameplate.
Manufacturer_________________________________________________________________
Model Designation___________________________________________________________
Serial Number_______________________________________________________________
Accessory Number
Accessory Description
Accessory Number
Accessory Description

TP-6843 12/21 3
Table of Contents
Safety Precautions and Instructions ........................................................................................................................................5
Introduction ..............................................................................................................................................................................11
Service Assistance...................................................................................................................................................................13
Section 1. Descriptions and Service Views...........................................................................................................15
1.1 Introduction ............................................................................................................................................................15
1.2 Engine....................................................................................................................................................................15
1.3 Generator Set Enclosure........................................................................................................................................15
1.4 Alternator................................................................................................................................................................15
1.5 Controller................................................................................................................................................................16
1.6 Accessories............................................................................................................................................................18
1.6.1 Carburetor Heater....................................................................................................................................18
1.6.2 OnCue® Plus Generator Management System.......................................................................................18
1.6.3 Programmable Interface Module (PIM)....................................................................................................18
1.6.4 Communications Kit.................................................................................................................................18
1.6.5 Oil Makeup Kit..........................................................................................................................................18
1.7 Service Views.........................................................................................................................................................19
Section 2. Generator Set Operation .......................................................................................................................21
2.1 Theory of Operation ...............................................................................................................................................21
2.2 Prestart Checklist...................................................................................................................................................22
2.3 Exercising the Generator Set.................................................................................................................................22
2.4 Generator Set Operation........................................................................................................................................22
2.4.1 Local Starting and Stopping.....................................................................................................................22
2.4.2 Remote Starting and Stopping.................................................................................................................22
2.4.3 Engine Start Crank Cycle.........................................................................................................................22
2.4.4 Engine Cooldown.....................................................................................................................................23
2.4.5 Automatic Operation................................................................................................................................23
2.5 Exercise .................................................................................................................................................................24
2.6 Faults .....................................................................................................................................................................24
2.6.1 Warnings..................................................................................................................................................24
2.6.2 Shutdowns...............................................................................................................................................24
2.6.3 Resetting the Controller After a Fault Shutdown......................................................................................25
Section 3. VSC Controller Operation......................................................................................................................27
3.1 VSC Generator Set Controller................................................................................................................................27
3.2 Control and Indicators............................................................................................................................................27
3.2.1 Controller Keypad....................................................................................................................................28
3.2.2 LED Indicators .........................................................................................................................................29
3.2.3 LCD Display.............................................................................................................................................29
3.3 Controller Power.....................................................................................................................................................30
3.4 Battery Charging ....................................................................................................................................................30
3.5 Changing Settings..................................................................................................................................................31
3.5.1 Procedure to Change Settings.................................................................................................................31
3.6 Setting the Exerciser..............................................................................................................................................33
3.6.1 Setting the Exerciser at Controller Power-up...........................................................................................33
3.6.2 Changing the Exercise Settings...............................................................................................................33
3.7 VSC Controller Menus............................................................................................................................................33
3.8 Main Menu .............................................................................................................................................................34
3.9 Overview Menu ......................................................................................................................................................35
3.10 Engine Metering Menu...........................................................................................................................................36
3.11 Generator Metering Menu......................................................................................................................................37
3.11.1 Calibration................................................................................................................................................37

4 TP-6843 12/21
3.12 Generator Set Information Menu............................................................................................................................38
3.13 Genset Run Time Menu.........................................................................................................................................39
3.14 Genset System Menu.............................................................................................................................................39
3.14.1 Adjusting the Display Contrast.................................................................................................................41
3.14.2 System Parameters for Battery Bank Charging .......................................................................................41
3.14.3 Setting the Exerciser................................................................................................................................43
3.15 Date and Time Menu..............................................................................................................................................45
3.16 Networking Information Menus...............................................................................................................................46
3.16.1 Networking Status Submenu....................................................................................................................47
3.16.2 Networking Configuration Submenu (OnCue® Password) ......................................................................48
3.16.3 RBUS Information....................................................................................................................................49
3.16.4 Remote Devices Submenu ......................................................................................................................50
3.17 Programmable Interface Module (PIM) Status Menu .............................................................................................51
3.18 Event Log...............................................................................................................................................................52
3.18.1 Procedure to View Event History .............................................................................................................52
Section 4. Scheduled Maintenance ........................................................................................................................53
4.1 Scheduled Maintenance.........................................................................................................................................53
4.1.1 Service Schedule, 6VSG Models.............................................................................................................54
4.2 Lubrication System.................................................................................................................................................55
4.2.1 Low Oil Pressure Shutdown.....................................................................................................................55
4.2.2 Oil Check .................................................................................................................................................55
4.2.3 Engine Oil Recommendation ...................................................................................................................55
4.2.4 Oil Change Procedure..............................................................................................................................56
4.2.5 Resetting the Maintenance Timer............................................................................................................57
4.3 Spark Plugs............................................................................................................................................................57
4.4 Air Cleaner Service ................................................................................................................................................58
4.5 Cooling System......................................................................................................................................................59
4.6 Exhaust System .....................................................................................................................................................59
4.7 Engine Starting Battery ..........................................................................................................................................60
4.8 Storage Procedure.................................................................................................................................................62
4.8.1 Lubricating System ..................................................................................................................................62
4.8.2 Fuel System.............................................................................................................................................62
4.8.3 Cylinder Lubrication.................................................................................................................................62
4.8.4 Exterior Preparation.................................................................................................................................62
4.8.5 Battery......................................................................................................................................................62
Section 5. Troubleshooting.....................................................................................................................................63
5.1 Introduction ............................................................................................................................................................63
5.2 Fault Messages......................................................................................................................................................63
5.3 Circuit Protection....................................................................................................................................................63
5.3.1 Controller Internal Circuit Protection ........................................................................................................63
5.3.2 Line Circuit Breaker..................................................................................................................................63
5.4 Controller USB Port................................................................................................................................................63
5.5 Troubleshooting......................................................................................................................................................64
Appendix A. Abbreviations.........................................................................................................................................65

TP-6843 12/21 5
Safety Precautions and Instructions
IMPORTANT SAFETY INSTRUCTIONS. Electromechanical equipment, including generatorsets, transfer switches,switchgear,
and accessories, can cause bodily harm and pose life-threatening danger when improperly installed, operated, or maintained.
To prevent accidents be aware of potential dangers and act safely. Read and follow all safety precautions and instructions.
SAVE THESE INSTRUCTIONS.
This manual has several types of safety precautions and instructions: Danger, Warning, Caution, and Notice.
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury.
Safety decals affixed to the equipment in prominent places alert the operator or service technician to potential hazards and
explain how to act safely. The decals are shown throughout this publication to improve operator recognition. Replace missing or
damaged decals.
Accidental Starting
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect 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.
Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1) Press the generator set off/reset button to shut down
the generator set. (2) Disconnect the power to the batterycharger, if equipped. (3) Remove the batterycables, negative (–) lead
first. Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.

6 TP-6843 12/21
Battery
WARNING
Sulfuric acid in batteries.
Can cause severe injury or death.
Wear protective goggles and clothing. Battery acid may cause blindness and burn skin.
WARNING
Explosion.
Can cause severe injury or death.
Relays in the battery charger cause arcs or sparks.
Locate the battery in a well‐ventilated area. Isolate the battery charger from explosive
fumes.
Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe injury or death. Battery acid can cause
blindness and burn skin. Always wear splashproof safety goggles, rubber gloves, and boots when servicing the battery. Do not
open a sealed battery or mutilate the battery case. 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. Never
add acid to a battery after placing the battery in service, as this may result in hazardous spattering of battery acid.
Battery acid cleanup. Battery acid can cause severe injury or death. 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.
Battery gases. Explosion can cause severe injury or death. Battery gases can cause an explosion. Do not smoke or permit
flames or sparks to occur near a battery at any time, particularly when it is charging. Do not dispose of a battery in a fire. To
prevent burns and sparks that could cause an explosion, avoid touching the battery terminals with tools or other metal objects.
Remove all jewelry before servicing the equipment. Discharge static electricity from your body before touching batteries by first
touching a groundedmetal surface away from the battery. To avoid sparks, do not disturb the battery charger connections while
the battery is charging. Always turn the battery charger off before disconnecting the battery connections. Ventilate the
compartments containing batteries to prevent accumulation of explosive gases.
Battery short circuits. Explosion can cause severe injury or death. 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.

TP-6843 12/21 7
Engine Backfire/Flash Fire
WARNING
Risk of fire.
Can cause severe injury or death.
Do not smoke or permit flames or sparks near fuels or the fuel system.
Servicing the fuel system. A flash fire can cause severe injury or death. Do not smoke or permit flames or sparks near the
carburetor, fuel line, fuel filter, fuel pump, or other potential sources of spilled fuels or fuel vapors. Catch fuels in an approved
container when removing the fuel line or carburetor.
Servicing the air cleaner. A sudden backfire can cause severe injury or death. Do not operate the generator set with the
air cleaner removed.
Combustible materials. A fire can cause severe injury or death. Generator set engine fuels and fuel vapors are flammable
and explosive. Handle these materials carefully to minimize the risk of fire or explosion. Equip the compartment or nearby area
with a fully charged fire extinguisher. Select a fire extinguisher rated ABC or BC for electrical fires or as recommended by the
local fire code or an authorized agency. Train all personnel on fire extinguisher operation and fire prevention procedures.
Exhaust System
WARNING
Carbon monoxide.
Can cause severe nausea, fainting, or death.
The exhaust system must be leakproof and routinely inspected.
Generator set operation. Carbon monoxide can cause severe nausea, fainting, or death. Carbon monoxide is an odorless,
colorless, tasteless, nonirritating gas that can cause death if inhaled for even a short time. Avoid breathing exhaust fumes when
working on or near the generator set. Never operate the generator set inside a building unless the exhaust gas is piped safely
outside. Never operate the generator set where exhaust gas could accumulate and seep back inside a potentially occupied
building.
Carbon monoxide detectors. Carbon monoxide can cause severe nausea, fainting, or death. Install carbon monoxide
detectors on each level of any building adjacent to the generator set. Locate the detectors to adequately warn the building’s
occupants of the presence of carbon monoxide. Keep the detectors operational at all times. Periodically test and replace the
carbon monoxide detectors according to the manufacturer’s instructions.
Carbon monoxide symptoms. Carbon monoxide can cause severe nausea, fainting, or death. Carbon monoxide is a
poisonous gas present in exhaust gases. Carbon monoxide is an odorless, colorless, tasteless, nonirritating gas that can cause
death if inhaled for even a short time. Carbon monoxide poisoning symptoms include but are not limited to the following:
Light-headedness, dizziness
Physical fatigue, weakness in joints and muscles
Sleepiness, mental fatigue, inability to concentrate or speak clearly, blurred vision
Stomachache, vomiting, nausea
If experiencing any of these symptoms andcarbon monoxide poisoningis possible, seek fresh airimmediately and remain active.
Do not sit, lie down, or fall asleep. Alert others to the possibility of carbon monoxide poisoning. Seek medical attention if the
condition of affected persons does not improve within minutes of breathing fresh air.

8 TP-6843 12/21
Fuel System
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling, storing, and using fuels.
The fuel system. Explosive fuelvapors can causesevere injury or death. Vaporized fuels are highly explosive. Use extreme
care when handling and storing fuels. Store fuels in a well-ventilated area away from spark-producing equipment and out of the
reach of children. Neveradd fuel to the tank while the engine is running because spilled fuel may ignite on contactwith hot parts
or from sparks. Do not smoke or permit flames or sparks to occur near sources of spilled fuel or fuel vapors. Keep the fuel lines
and connections tight and in good condition. Do not replace flexible fuel lines with rigid lines. Use flexible sections to avoid fuel
line breakage caused by vibration. Do not operate the generator set in the presence of fuel leaks, fuel accumulation, or sparks.
Repair fuel systems before resuming generator set operation.
Gas fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel leakage can cause an explosion. Check the
LPG vapor or natural gas fuel system for leakage by using a soap andwater solution with the fuel system test pressurized to 6–
8 ounces per square inch (10–14 inches water column). Do not use a soap solution containing either ammonia or chlorine
because both prevent bubble formation. A successful test depends on the ability of the solution to bubble.
Hazardous Noise
CAUTION
Hazardous noise.
Can cause hearing loss.
Never operate the generator set without a muffler or with a faulty exhaust system.
Engine noise. Hazardous noise can cause hearing loss. Generator sets not equipped with sound enclosures can produce
noise levels greater than 105 dBA. Prolonged exposure to noise levels greater than 85 dBA can cause permanent hearing loss.
Wear hearing protection when near an operating generator set.

TP-6843 12/21 9
Hazardous Voltage/Moving Parts
DANGER
Hazardous voltage.
Will cause severe injury or death.
This equipment must be installed and serviced by qualified electrical personnel.
DANGER
Hazardous voltage. Moving parts.
Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are in place.
Grounding electrical equipment. Hazardous voltage will cause severe injury or death. Electrocution is possible whenever
electricity is present. Ensure you comply with all applicable codes and standards. Electrically ground the generator set and
related equipment and electrical circuits. Turn off the main circuit breakers of all power sources before servicing the equipment.
Never contact electrical leads or appliances when standing in water or on wet ground because these conditions increase the
risk of electrocution.
CAUTION
Welding the generator set.
Can cause severe electrical equipment damage.
Welding on generator set will cause serious damage to engine electronic controls components. Disconnect all engine
electronic control connections before welding.
Welding on the generator set. Can cause severe electrical equipment damage. Before welding on thegeneratorset 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.
Connecting the battery and the battery charger. Hazardous voltage will cause severe injury or death. Reconnect the
battery correctly, positive to positive and negative to negative, to avoid electrical shock and damage to the battery charger and
battery(ies). Have a qualified electrician install the battery(ies).
Short circuits. Hazardous voltage/current will cause severe injury or death. Short circuits can cause bodily injury and/or
equipment damage. Do not contact electrical connections with tools or jewelry while making adjustments or repairs. Remove all
jewelry before servicing the equipment.

10 TP-6843 12/21
Heavy Equipment
WARNING
Unbalanced weight.
Improper lifting can cause severe injury or death and equipment damage.
Do not use lifting eyes. Lift the generator set using lifting bars inserted through the lifting
holes on the skid.
Hot Parts
WARNING
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until it cools.
Servicing the exhaust system. Hot parts can cause severe injury or death. Do not touch hot engine parts. The engine and
exhaust system components become extremely hot during operation.
Servicing the engine heater. Hot parts can cause minor personal injury or property damage. Install the heater before
connecting it to power. Operating the heater before installation can cause burns and component damage. Disconnect power to
the heater and allow it to cool before servicing the heater or nearby parts.

TP-6843 12/21 11
Introduction
This manual provides operation andmaintenance instructions for the DC (direct current) variable speed model 6VSG generator
sets equipped with Kohler VSC generator set controllers.
This generator set is approved for use in stationary applications in locations served by a public utility, photovoltaic cells, wind
turbines or any combination of power sources tied to a battery bank. Have the generator set installed by an authorized
distributor/dealer or service technician. Refer to Installation Manual, for installation instructions.
Information in this publication represents data available at the time of print. Kohler Co. reserves the right to change this
publication and the products represented without notice and without any obligation or liability whatsoever.
Read this manual and carefully follow all procedures and safety precautions to ensure proper equipment operation and to avoid
bodily injury. Read and follow the Safety Precautions and Instructions section at the beginning of this manual. Keep this manual
with the equipment for future reference.
The equipment service requirements are very important to safe and efficient operation. Inspect the parts often and perform
required service at the prescribed intervals. Obtain service from an authorized service distributor/dealer to keep equipment in
top condition.
Figure 1 6VSG Generator Set
List of Related Literature
Figure 2 identifies related literature available for the generator sets covered in this manual. Only trained and qualified personnel
should install or service the generator set.
Literature Type
Part Number
Installation Manual, Model 6VSG Generator Set
TP-6842
Service Manual, 6VSG Generator Set
TP-6844
Operation Manual, SiteTech™ Software
TP-6701
User Guide, OnCue® Plus
TP-7006
Technical Manual, OnCue® Plus
TP-7007
Installation Instructions, Programmable Interface Module (PIM)
TT-1584
Installation Instructions, Oil Makeup Kit
TT-1591
Parts Catalog, Model 6VSG
TP-6845
Figure 2 Related Literature

12 TP-6843 12/21
Nameplate
The following illustration shows a typical generator set nameplate. Copy the model, serial, and specification numbers from the
nameplate into the spaces provided in the product information section on the inside front cover of this manual. See the service
views for the nameplate location.
Figure 3 Typical Nameplate
Emission Information
The Kohler Model CH740 engine used on the 6VSG generator set is certified to operate using natural gas or LPG fuel.
Refer to the certification label for engine displacement. The exhaust emission control system for the CH740 engines (6VSG) is
EPA certified for all 50 states. See the Service View for engine certification label location.

TP-6843 12/21 13
Service Assistance
For professional advice and conscientious service, please
contact your nearest Kohler distributor or dealer.
Visit the Kohler Co. website at KOHLERPower.com.
Look at the labels and decals on your Kohler product
or review the appropriate literature or documents
included with the product.
Call toll free in the US and Canada 1-800-544-2444.
Outside the US and Canada, call the nearest
regional office.
Headquarters Europe, Middle East, Africa (EMEA)
Kohler EMEA Headquarters
Netherlands B.V.
Kristallaan 1
4761 ZC Zevenbergen
The Netherlands
Phone: [phone]
Fax: [phone]
Asia Pacific
Kohler Asia Pacific Headquarters
Singapore, Republic of Singapore
Phone: [phone]
Fax: [phone]
China
North China Regional Office, Beijing
Phone: [phone]
(86) 10 6518 7951
(86) 10 6518 7952
Fax: [phone]
East China Regional Office, Shanghai
Phone: [phone]
Fax: [phone]
India, Bangladesh, Sri Lanka
India Regional Office
Bangalore, India
Phone: [phone]
(91) 80 3366231
Fax: [phone]
Japan, Korea
North Asia Regional Office
Tokyo, Japan
Phone: [phone]
Fax: [phone]

14 TP-6843 12/21

TP-6843 12/21 15
Section 1. Descriptions and Service Views
1.1 Introduction
The generator set specification sheets provide specific generator and engine information. Refer to the spec sheet for data not
supplied in this manual. Consult the generator set service manual, engine operation manual, and engine service manual for
additional specifications. Obtain copies of the latest spec sheets, manuals, diagrams, and drawings from your local
distributor/dealer.
1.2 Engine
The generator set has a four-cycle, twin cylinder, air-cooled Kohler engine. The engine operates on clean-burning natural gas
or LPG fuel. Engine features include:
Efficient overhead valve design and full pressure lubrication for maximum power, torque, and reliability under all
operating conditions.
Dependable, maintenance-free electronic ignition.
Precision-formulated cast iron construction of parts subjected to the most wear and tear.
Field-convertible multi-fuel systems that allow fuel changeover from natural gas to LPG (and vice versa) while
maintaining emission certification.
The variable-speed engine runs at 2300 rpm at no load and 2900 rpm when supplying full load.
1.3 Generator Set Enclosure
The generator set is housed in a steel enclosure with Power Armor powder coat paint. The enclosure has a hinged, locking door
that allows easy access to the generator set controller when required, but locks securely to prevent unauthorized access.
To open the door, insert the tool provided with the enclosure and turn counterclockwise ½ turn.
Be sure to close and lock the enclosure, and keep the tool in a secure location.
1.4 Alternator
The 6VSG is a direct current (DC) output machine. It utilizes a 24-pole permanent magnet construction to create high frequency
three-phase alternating current which is rectified to produce low-ripple DC output.

16 TP-6843 12/21
1.5 Controller
The Model 6VSG generatorsetcomes equipped with the VSC controller.See Figure 4. The controller provides integrated control
for the generator set and the optional programmable interface module (PIM) or optional communications kit interface board.
The controller’s two-line LCD screen displays status messages and system settings that are clear and easy to read in all lighting
conditions, including direct sunlight and low light.
Figure 4 VSC Controller
VSC Controller Features
Six-button keypad
oOFF, AUTO, and RUN pushbuttons
oSelect and arrow buttons for access to system configuration and adjustment menus
LED indicators for OFF, AUTO, and RUN modes
LED indicators for percentage of load being output
LCD display
oTwo lines x 16 characters per line
oBacklit display with adjustable contrast for excellent visibility in all lighting conditions
Scrolling system status display
oGenerator set status
oVoltage and percent load
oEngine temperature
oOil pressure
oBattery voltage
oEngine runtime hours
Date and time displays
Smart engine cooldown senses engine temperature
Digital voltage regulation: ±1.0% RMS no-load to full-load
Automatic start with programmed cranking cycle
GM89864

TP-6843 12/21 17
Programmable exerciser can be set to start automatically on any future dayand time, and run every week or every two
weeks
Three exercise modes
Front-access mini USB connector for SiteTech™ connection
Integral Ethernet connector for Kohler® OnCue® Plus
Built-in 2.5 amp battery charger
Remote two-wire start/stop capability
Diagnostic messages
oDisplays diagnostic messages for the engine, generator, and programmable interface module (PIM)
oOver 70 diagnostic messages can be displayed
Maintenance reminders
System settings
oSystem voltage and percent load
oVoltage adjustment
oMeasurement system, English or metric
Programmable Interface Module (PIM) status displays
oInput status (active/inactive)
oOutput status (active/inactive)

18 TP-6843 12/21
1.6 Accessories
The following optional accessories are offered for the 6VSG generator sets.
1.6.1 Carburetor Heater
An optional carburetor heater is recommended for improved cold starting in locations where the ambient temperature drops
below 0°C (32°F). The carburetor heater prevents condensation and carburetor icing. The heater requires a continuous source
of AC power.
See the generator set Installation manual for more information.
1.6.2 OnCue® Plus Generator Management System
The Kohler®OnCue®Plus Generator Management System is included with the generator set. The OnCue®Plus System allows
monitoring and control of your generator set from your home or other location with Internet access using a computer or mobile
device. OnCue®Plus can be configured to send email or text message notifications in the event of a generator set fault.
You can also use Google Assistant or Amazon Alexa and your smart device to control your generator. Use voice commands to
check your generator’s status, check for active alerts, and start or stop an exercise. See the OnCue®Plus User Guide, TP- 7006,
for simple setup instructions and voice commands.
OnCue®PlusWireless is also available. OnCue®Plus Wireless works with the customer’s wireless Ethernet router and does not
require the installation of a network cable between the generator set and the customer’s router/modem.
1.6.3 Programmable Interface Module (PIM)
The optional Programmable Interface Module (PIM) provides two programmable inputs and six programmable dry contact
outputs for connection to customer-supplied equipment. The outputs are controlled by the VSC controller, and can also be
controlled remotely using the OnCue®Plus program.
The PIM is mounted in a NEMA 3R aluminum enclosure, which can be mounted indoors or outdoors. See the installation
instructions provided with the PIM.
1.6.4 Communications Kit
The optional communications kit includes the following factory-installed items:
Interface board with factory-set inputs and outputs and customer connection terminal blocks
Fuel pressure switch
Enclosure intrusion alarm switch
1.6.5 Oil Makeup Kit
The oil makeup kit increases the oil capacity on 6VSG residential/commercial generator sets. The kit includes a 2 qt. (1.9 L) oil
reservoir and a large sight gauge for the oil level. The kit is installed inside the enclosure on the 6VSG generator set.
The oil makeup kit extends the oil level check interval by providing extra oil in the reservoir. See the Scheduled Maintenance
Section for the maintenance schedule and oil specifications. Continue to change the engine oil at the intervals stated in the
maintenance schedule and use the recommended oil. Do not mix conventional and synthetic oils.

TP-6843 12/21 19
1.7 Service Views
1. Exhaust air outlet
2. Air cleaner
3. Oil fill
4. Oil drain
5. Oil drain valve
6. Oil filter
7. Muffler
8. Alternator air inlet
9. Customer connection blocks (located behind panel)
10. Electrical inlet access panel
11. Engine starting battery location (battery not included)
12. Lifting hole
13. Controller
14. Engine certification label
15. Load circuit breaker
16. Oil dipstick
17. Exhaust outlet
18. Fuel inlet
19. Electrical inlet
20. Battery cables (included)
21. Nameplate
Figure 5 Service View (see the next figures for optional kit components)
9
1
7
2
3
4
5
6
10
11
8
12
12
17
18
19
20
21
13
14
15
16
ADV-8060

20 TP-6843 12/21
1. Interface board (factory-wired to terminal blocks)
2. Intrusion alarm switch
3. Interface board input and output connection terminal blocks
4. Fuel pressure switch
Figure 6 Optional Communications Kit Components
Figure 7 Optional Oil Makeup Kit
1
ComKitB
GM85956F
2
4
3
Oil bottle
GM85224
Valve to sight gauge
Sight gauge
Engine oil drain valve
See valve detail
Valve detail