Winco W6000HE-03/A Administrator Guide

W6000HE-03/A
GENERATOR
INSTALLATION & OPERATORS
MANUAL
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MODEL _________________________________________________
SERIAL NUMBER _________________________________________
PURCHASE DATE _________________________________________
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www.wincogen.com
16200-002

2
OPM-131/E
TABLE OF CONTENTS
SAFETY INFORMATION 3
SPECIFICATIONS 4
GENERATOR
ENGINE
TESTING POLICY 4
INTRODUCTION 5
INTENDED USES
RESTRICTED USES
UNIT CAPABILITIES 6
GENERATOR CONNECTIONS
STARTING ELECTRIC MOTORS
PREPARING THE UNIT 7
UNPACKING
LUBRICATION
OIL RECOMMENDATIONS
OIL ALERT SYSTEM
GASOLINE
AUTOMATIC VOLTAGE REGULATOR
BATTERY INSTALLATION
BATTERY CHARGING
OPTIONAL DOLLY KIT
LIFTING EYE INSTALLATION
INITIAL START UP 9
BASIC OPERATION
STARTING HINTS
CONNECTING THE LOADS 11
APPLYING THE LOADS
GROUNDING
WIRING
YOURGEN 13
ENGINE CARE 15
MAINTENANCE SCHEDULE
CHECKING THE OIL LEVEL
CHANGING THE OIL
DUAL ELEMENT AIR FILTER
SPARK PLUG
CARBON CANISTER
TROUBLESHOOTING 17
GENERATOR CARE 18
EXERCISING THE GENERATOR
GENERATOR MAINTENANCE
CLEANING
WIRING DIAGRAM 19
CA EVAP EMISSION CONTROL 20
LIMITED WARRANTY 20

3OPM-131/E
WARNING: FIRE HAZARD
Gasoline and other fuels present a hazard of possible
explosion and/or fire.
A. Do not refuel when the engine is running or hot.
B. Keep fuel containers out of reach of children.
C. Do not smoke or use open flame near the
generator set or fuel tank.
D. Keep a fire extinguisher nearby and know its
proper use. Fire extinguishers rated ABC by
NFPA are appropriate.
E. Store fuel only in an approved container, and
only in a well ventilated area.
F. Follow local codes for closeness to combustible
material.
CAUTION: PERSONAL INJURY
The muffler becomes very hot during operation and
for a period after the unit has been turned off. Do not
touch the muffler until it has completely cooled off.
CAUTION: NOISE HAZARD
Excessive noise is not only tiring, but continual
exposure can lead to loss of hearing.
A. Use hearing protection when working around
this equipment for long periods of time.
B. Keep your neighbors in mind when using this
equipment.
CAUTION
Keep the generator and surrounding area clean.
A. Remove all grease, ice, snow or materials that
create slippery conditions around the unit.
B. Remove any rags or other materials that could
create a potential fire hazard.
C. Carefully clean up any gas or oil spills before
starting the unit.
CAUTION
All service, including the installation or replacement of
service parts, should be performed only by a qualified
technician.
A. Use only factory approved repair parts.
B. Do not work on this equipment when fatigued.
C. Never remove the protective guards, covers, or
receptacle panels while the engine is running.
D. Use extreme caution when working on electrical
components. High output voltage from this
equipment can cause serious injury or death.
E. Always avoid hot mufflers, exhaust manifolds,
and engine parts. They can cause severe burns
instantly.
F. The use of the engine-generator set must comply
with all national, state, and local codes.
SAFETY INFORMATION
This engine generator set has been designed and
manufactured to allow safe, reliable performance. Poor
maintenance, improper or careless use can result in
potentially deadly hazards; from electrical shock, exhaust
gas asphyxiation, or fire. Please read all safety instructions
carefully before installation or use. Keep these instructions
handy for future reference. Take special note and follow all
warnings on the unit labels and in the manuals.
SAFETY DEFINITIONS
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
CAUTION
Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury. It may also be used to alert
against unsafe practices.
CALIFORNIA PROPOSITION 65
WARNING: This product contains crude oil,
gasoline, diesel fuel and other petroleum
products, Antifreeze to which can expose
you to chemicals including toluene and
benzene, Ethylene glycol (ingested) which are known
to the State of California to cause cancer, birth defects
or other reproductive harm and developmental issues.
For more information go to www.P65Warning.ca.gov.
DANGER: ELECTRICAL SHOCK
The output voltage present in this equipment can
cause fatal electric shock. This equipment must be
operated by a responsible person.
A. Do not allow anyone to operate the generator
without proper instruction.
B. Guard against electric shock.
C. Avoid contact with live terminals or receptacles.
D. Use extreme care if operating this unit in rain or
snow.
E. Use only three-pronged grounded receptacles
and extension cords.
F. Be sure the unit is properly grounded for your
application.
DANGER: DEADLY EXHAUST GAS
Exhaust fumes from any gasoline engine contain
carbon monoxide, an invisible, odorless and deadly gas
that must be mixed with fresh air.
A. Operate only in well ventilated areas.
B. Never operate indoors including attached
garages
C. Never operate the unit in such a way as to allow
exhaust gases to seep back into closed rooms
(i.e. through windows, walls, floors).

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OPM-131/E
SPECIFICATIONS
GENERATOR
Model W6000HE-03/A
Surge Watts 6,000
Continuous Watts 5,500
Volts 120/240
Amps 45.8/22.9
Generator Manufacturer Mecc Alte Spa
Generator Model Number ES16F-160/A
Part Number 16346-027
Rotor Resistance 6.57 Ohms
Stator Resistance 0.124 Ohms
Regulation AVR ASR
ENGINE
Engine Manufacturer Honda
Engine Model Number GX340
Type RT2VWE2 NH1
Code GCBET
Spark Plug Gap 0.030 in
Intake Valve Clearance 0.005 in +/- .0008
Exhaust Valve Clearance 0.07 in +/- .0008
Oil Capacity 38.4 oz (1.2 qts)

5OPM-131/E
INTRODUCTION
TESTING POLICY
Before any generator is shipped from the factory, it is fully
checked for performance. The generator is loaded to its
full capacity, and the voltage, current, and frequency are
carefully checked.
Rated output of generator is based on engineering tests
of typical units, and is subject to, and limited by, the
temperature, altitude, fuel, and other conditions specified
by the manufacturer of applicable engines.
INTENDED USES
This engine generator set has been designed primarily for
portable heavy duty commercial use. Both 120 volt and 240
volt receptacles are provided in the control panel to plug
in your loads (lights, portable tools, and small appliances).
These units are dual wound generators, therefore the
120 volt loads must be equally split with 1/2 of the rated
capacity available on each of the two 120 volt circuits.
This portable unit requires large quantities of fresh air for
cooling the engine and generator. For safety, long life and
adequate performance, these units should never be run in
small compartments without positive fresh air flow.
RESTRICTED USES
DO NOT remove from the cradle assembly. Removal of the
generator from the cradle assembly may cause excessive
vibration and damage to the engine-generator set.
DO NOT operate and/or store the unit outside during
inclement weather without adequate protection from the
elements. Failure to do so will damage the unit.
DO NOT install and operate this generator in a small
compartment., i.e. generator compartments of vehicles,
motor homes or travel trailers. These compartments
will not allow enough free flow of fresh air to reach the
engine generator set for cooling and will cause the unit to
overheat, damaging both the engine and generator. Small
compartments will also develop hot spots where there is
very little air flow and may cause a fire.
PLEASE NOTE There are 3rd party companies making
enclosures for generators that have been properly
engineered. The use of these 3rd party enclosures is
acceptable as long as they have been certified and meet
current code.
DO NOT attempt to operate at 50 cycles. These units are
designed and governed to operate at 60 cycles only.

6
OPM-131/E
UNIT CAPABILITIES
GENERATOR CONNECTIONS
WC6000HE-03/A: 120 Volt and 240 Volt receptacles are
provided for connection to various loads. The diagram
below represents this 5,500 watt (rated output) generator.
A & B represent the 120 volt output legs of this generator.
Up to 2,750 watts at 120 volts (22.9 Amps) can be drawn
from the receptacles attached to either A or B output legs.
This generator is capable of producing 22.9 Amps of 240
volt current at C. Check the appliance or tool nameplates for
the current and voltage to insure compatibility. Remember
that power taken from C reduces the power available
equally at both A and B and vice versa.
STARTING ELECTRIC MOTORS
Electric motors require much more current (amps) to start
them than to run them. Some motors, particularly low cost
split-phase motors, are very hard to start and require 5 to 7
times as much starting current as running current. Capacitor
motors are easier to start and usually require 2 to 4 times
as much starting current as running current. Repulsion
Induction motors are the easiest to start and require only 1
1/2 to 2 1/2 times as much starting as running current.
Most fractional horsepower motors take about the same
amount of current to run them whether they are Repulsion
Induction (RI), Capacitor (Cap), or Split-Phase (SP) type.
If the electric motor is connected to a hard starting load
such as an air compressor, it will require more starting
current. If it is connected to a light load, or no load such as
a power saw, it will require less starting current. The exact
requirement will also vary with the brand or design of the
motor.
Self-exciting generators respond to severe overloading
differently than utility power. When overloaded, the engine
is not able to supply enough power to bring the electric
motor up to operating speed. The generator responds with
high initial starting current, but the engine speed drops
sharply. The overload may stall the engine. If allowed to
operate at very low speeds, the electric motor starting
winding will burn out in a short time. The generator
winding might also be damaged.
CAUTION: EQUIPMENT DAMAGE
Running the generator set under these conditions may
result in damage to the generator stator as well as the
motor winding.
The heavy surge of current required for starting motors
is required for only an instant. The generator will not be
damaged if it can bring the motor up to speed in a few
seconds of time. If difficulty is experienced in starting
motors, turn all other electrical loads off and if possible
reduce the load on the electric motor.

7OPM-131/E
OIL RECOMMENDATIONS
Outdoor temperatures determine the proper oil viscosity for
the engines. Winco recommends our 5W-30 fully synthetic
oil to give you excellent protection in cold temperatures
while maintaining excellent performance in warmer
weather.
OIL ALERT SYSTEM
This generator is equipped with a low oil shutdown system.
This Honda engine uses a float switch mounted inside the
engine. If the oil level drops below a certain point the low
oil module on the engine will shut it down. This low oil
warning system will automatically stop the engine before
the oil level reaches a critical danger point. This feature is
designed to prevent costly repairs and downtime.
CAUTION: EQUIPMENT DAMAGE
Allowing the engine to shutdown repeatedly on
low oil level may cause excessive wear which can be
cumulative.
GASOLINE
When using gasoline, always use fresh, clean, unleaded
fuel. The engine is certified to operate on unleaded gasoline
with a minimum octane rating of 87 or higher. Gasoline
containing no more the 10% ethanol is acceptable.
CAUTION: EQUIPMENT DAMAGE
Do not use unapproved gasolines, such as E15 or E85.
Do not mix oil in the gasoline. Use of unapproved fuels
will damage the engine components and void the
engine warranty.
Use of fuels with content of ethanol greater than shown
above may cause starting and/or performance problems.
Always ensure that the fuel is clean and free of all
impurities.
WARNING: FIRE DANGER
Gasoline and its fumes are VERY explosive when
proper precautions are not taken.
Never use gasoline that has been stored for an extended
period of time as the fuel will lose its volatile properties
and you will be left with varnish residue. The varnish
like substance will clog the carburetor and will not burn
properly.
PREPARING THE UNIT
UNPACKING
When you unpack your engine-generator set be sure to
remove all the information sheets and manuals from the
carton.
1. As you receive your unit, it is critical to check it for any
damage. If any damage is noted, it is always easiest to
refuse the shipment and let WINCO take care of the freight
claim. If you sign for the unit, the transfer of the ownership
requires that you file the freight claim
2. Before proceeding with the preparations of your new
generator for operation, take a couple of minutes to ensure
the unit you have received is the correct model and review
the specification pages in this manual to ensure that this
unit meets your job requirements.
LUBRICATION
CAUTION: EQUIPMENT DAMAGE
Failure to maintain the engine oil at the proper level
will result in serious engine damage.
This unit has been shipped with oil. Always check the
crankcase for proper oil level before starting the engine. The
recommended grade oil and quantity of oil required is listed
in the engine operator’s manual and under the service tab
in this manual. The engine normally holds 38.4 ounces (1.2
quarts) of oil. Since there is some trapped in the engine,
when filling the crankcase the first time, use the dipstick
to ensure that you do not over fill the crankcase. The full
oil level mark on the dipstick is depicted in the following
image.
Oil is added to the engine by removing the oil cap and
adding oil at this point. After filling the crankcase to the
proper level, be sure you properly tighten the oil fill cap.
NOTE: This engine generator must be on a level surface
before you check or add oil to the system.
The necessity of using the correct oil and keeping the
crankcase full cannot be overemphasized. Engine failures
resulting from inadequate or improper lubricant are
considered abuse and not covered by the generator or
engine manufacturer’s warranty.

8
OPM-131/E
The use of fuel additives, such as Sta-Bil, or an equivalent
will minimize the formation of fuel gum deposits. If a unit
has been out of operation for an extended period of time,
it is best to drain old fuel from the engine and replace with
fresh fuel before attempting to start.
See the engine manual for special instruction for operating
this unit at over 5000 feet.
AUTOMATIC VOLTAGE REGULATOR
The following is a list of connections on the AVR. These
have been factory set and other than voltage adjustment,
should never be changed.
TERMINALS
Terminal 1 - Excitation Negative
Terminal 2 - Excitation Positive
Terminal 3 - AVR Power Supply
Terminal 4 & 5 - Voltage Sensing Input
Terminal 6 & 7 - Common for Sensing and Power Supply
VOLTS
To adjust generator output voltage.
Clockwise to increase voltage.
STAB
To prevent voltage hunting.
Clockwise to decrease stability and consequently the
response time.
BATTERY INSTALLATION
This engine generator set is shipped with a battery tie down
for customer installation. The weather-resistant and EPDM
tie down strap has zinc-plated steel hooks that will strap
over the customer supplied battery. Fit the battery onto the
tray, hook the strap up and over the battery, using the pre-
drilled holes on the tray. Reference the following drawing.
WARNING: EQUIPMENT DAMAGE
The battery positive (+) cable is shipped with a plastic
protective cap. When starting manually, this protective
cap must remain in place to avoid possible damage to
the engine electrical system and/or generator end.
An Interstate IB18-A ,12 Volt battery or equivalent is
recommended for the electric start on this engine-generator
set. Follow the battery manufacturers recommendations for
servicing and charging prior to use. Connect the battery to
the electric start system using the cables provided.
CAUTION: EQUIPMENT DAMAGE
These electric start engines are NEGATIVE GROUND.
Use extreme caution when connecting the battery.
Connect the NEGATIVE battery terminal to GROUND.
For your safety, always connect the positive battery cable to
the “Bat+” terminal first. Then connect the negative battery
cable to the “Bat-” terminal. Make sure all connections are
clean an tight. Reverse the sequence when disconnecting,
disconnect the negative cable first. These engines produce
enough direct current to keep the battery charged under
normal operating conditions, but were not intended to be
used as a battery charger.
WARNING: PERSONAL INJURY
Lead acid batteries produce explosive hydrogen gas
when charging. Keep sparks, flames, and burning
cigarettes away from the battery. Ventilate the area
when charging or using the battery in an enclosed
space. Lead acid batteries contain sulfuric acid, which
causes severe burns. If acid contacts eyes, skin, or
clothing, flush well with water. For contact with the
eyes, get immediate medical attention.
BATTERY CHARGING
Units have a small flywheel charger built into the engine
flywheel assembly for recharging the starting battery. This
flywheel charger generates a small AC current that passes
through a diode assembly to produce DC charging current
of about 1 to 3 Amps. This circuit is not designed to be used
as a battery charging circuit to recharge dead batteries.
OPTIONAL DOLLY KIT
An optional 2-wheel dolly kit is available for this generator.
The dolly kit comes with instruction sheet and parts list.
LIFTING EYE INSTALLATION
The lifting eye is shipped loose along with a bag of parts.
Install the base of the lifting eye below the middle support.
See diagram below.
Button head
cap screw
Washer
.375
Flange
.31258 -18

9OPM-131/E
ELECTRIC STARTING
If the engine is cold and stiff or if the battery is not fully
charged, starting can be made easier by slowly hand
cranking the engine through the compression stroke before
pushing the starter switch. This permits the starter to gain
momentum before the heavy load of the compression
stroke occurs. This minimizes the drain on the battery and
improves the possibility of starting under such adverse
conditions.
Always keep the battery charged, especially during cold
weather operation.
1. Check oil level, refill as needed.
2. Turn on the fuel supply. Lever pointing up is on, lever
pointing down is off.
3. Move the choke to the CLOSED position. A warm
engine will require less choking than a cold engine.
4. Turn the engine switch to the ON position.
5. Operating the starter. Rotate the engine switch briefly
to the START position. The starter life is improved by
using shorter starting cycles with time to cool off
between cranking cycles. Do not operate the starter
more than 5 seconds and wait at least 10 seconds
before operating the starter again, Repeat cycle if
necessary.
6. When the engine starts, release the engine switch,
allowing it to return to the “on” position.
7. Gradually move choke to the open position as the
engine warms up.
8. The engine should promptly come up to operating
speed.
CAUTION: EQUIPMENT DAMAGE
Never permit the choke to remain on after the engine
has run for a short time. It is not necessary to choke the
engine when it is warm. Avoid overchoking.
STARTING HINTS
1. COLD WEATHER
A. Use the proper oil for the temperature expected.
B. Use fresh winter grade fuel. Winter grade gasoline is
blended to improve starting. Do not use summer grade
gasoline.
2. HOT WEATHER
A. Use the proper oil for the temperature expected.
B. Use only summer blended gasoline. Using gasoline left
over from winter may cause the unit to vapor lock.
INITIAL START UP
The throttle control on these generators is preset and
locked to operate at 3600 RPM (nominal) with no load
speed set at 3690 RPM. Only a trained service technician
should be allowed to adjust this speed setting.
NOTICE: ENGINE START LOCKOUT
This unit will not start if it is low on oil. The lubricating
oil level must be at the full mark before the engine will
start and run.
BASIC OPERATION
If the engine is cold and stiff or if the battery is not fully
charged, starting can be made easier by slowly hand
cranking the engine through the compression stroke before
pushing the starter switch. This permits the starter to gain
momentum before the heavy load of the compression
stroke occurs. This minimizes the drain on the battery and
improves the possibility of starting under such adverse
conditions. Always keep the battery charged, especially
during cold weather operation.
MANUAL STARTING
1. Check oil level, refill as needed.
2. Turn on the fuel supply by moving the fuel supply to
the ON position.
3. Move the choke to the CLOSED position. A warm
engine will require less choking than a cold engine.
4. Turn the engine switch to the “on” position.
5. Pull the starter grip lightly until resistance is felt, then
pull briskly.
6. When the engine starts, open the choke gradually.
7. The engine should promptly come up to operating
speed.
CAUTION: EQUIPMENT DAMAGE
Do not allow the starter grip to snap back against the
engine. Return it gently to prevent damage to the
starter.

10
OPM-131/E
STOPPING AND STORING
1. Move the key to the “OFF” position.
2. Turn off the fuel supply valve.
3. Before extended storage (over 30 days) certain
precautions must be taken to ensure the fuel doesn’t
deteriorate and clog the fuel system.
NOTE: The use of a fuel additive, such as Sta-Bil or
equivalent will minimize the formation of gum deposits
during storage. The additive may be added to gasoline in
the engines fuel tank or to gasoline in a storage container.
A. Add the fuel stabilizer to the fuel in the tank and run
for 2 minutes to circulate the stabilizer throughout the
fuel system.
B. If you choose to remove the remaining fuel from the
fuel tank, it must be drained into an approved
container.
C. Start the engine and allow it to run until all the fuel in
the carburetor and the fuel lines has been used up and
the engine stops.
D. While the engine is warm, drain the oil and refill with
fresh oil.
E. Clean dirt and chaff from cylinder, cylinder head fins,
blower housing, screen, and muffler areas.
F. Store in a clean and dry area.
NOTE: Running the engine to use up the fuel in the lines
and carburetor will still leave a small amount of fuel in
carburetor. It is best for extended storage to treat the fuel
before draining.

11 OPM-131/E
GROUNDING
Proper grounding of your generator is application
dependent. Carefully evaluate your planned use of your
generator to understand which grounding you require.
If you are not sure what to do, contact a competent
professional to assist you. The NFPA 70 250:34-35 are good
technical references.
STANDARD PORTABLE GENERATOR
Your WINCO portable generator ships with a bonded
neutral. You can safely use this generator without external
grounding as long as all loads are powered through the
receptacle panel.
VEHICLE-MOUNTED GENERATOR
Your WINCO portable generator ships with a bonded
neutral. When mounted to a vehicle to safely distribute
power it is necessary that the generator frame is bonded
to the vehicle frame. The generator should only supply
equipment that is cord and plug connected through
receptacles mounted on the generator or the vehicle.
PERMANENTLY INSTALLED GENERATORS
This WINCO portable generator ships with a bonded
neutral and overcurrent protection. NFPA 70 refers to this
as a “separately derived system.” When connecting it to a
building a transfer switch specifically designed for GFCI and
bonded neutral generators is required.
WIRING
Plug your tools such as drills, saws, blowers, sump pump,
and other items to be powered directly into the generator
receptacles. Before plugging in all the tools and cord
sets, recheck the rating of the generator set. Be sure it
can handle the intended load and is compatible with the
voltage, phase, and current ratings. ‘Hard wiring’ this unit
directly into a temporary construction site electrical system is
NOT A SIMPLE DO-IT-YOURSELF JOB. For your safety, all
wiring must be done by a qualified electrician and conform
to the National Electric Code and comply with all state and
local codes and regulations. Check with local authorities
before proceeding.
WARNING: PERSONAL DANGER
A fully isolated, double pole double throw manual
transfer switch must be installed any time a generator
is being connected to an existing distribution system.
1. These engine generator sets are designed for portable
heavy duty commercial use. Receptacles are provided on
the control panel to permit 120 and 240 volt portable
appliances and tools to be plugged directly into them.
A 4-wire receptacle (two hot, one ground, and one
neutral) has been provided on the control panel for use
in temporary power applications requiring 120/240 volt
power.
CONNECTING THE LOADS
The engine-generator covered in this manual was designed
for portable use. Do NOT operate indoors. The unit should
be stored in a warm, dry location. Move the unit outdoors
to a flat, dry location for use.
WARNING: PERSONAL DANGER:
Operating any engine driven generator without
proper air flow can result in personal injury or death.
DO NOT operate this unit inside a home or garage,
near vents or windows, or anywhere carbon monoxide
gas could accumulate.
APPLYING THE LOADS
Allow the engine to warm up for two or three minutes
before applying any load. This will allow the engine to
reach normal operating temperature and oil to circulate
throughout the engine. A short warm-up time will permit
the engine to work more efficiently when the load is
applied and will reduce the wear in the engine, extending
its life.
Receptacles have been provided to allow loads to be
connected to the generator. The loads should be added
one at a time. If a large motor is being started: or multiple
motors are being started, they should be started individually
and the largest should be started first.
CAUTION: EQUIPMENT OVERLOAD
Keep the generator load within in the generator and
receptacle nameplate rating. Overloading may cause
damage to the generator and/or the loads.
Most electric tools and appliances will have the voltage and
amperage requirements on their individual nameplates.
When in doubt, consult the manufacturer or a local
electrician. The nameplate amperage rating for electric
motors can be misleading. See “Starting Electric Motors” in
the Unit Capabilities.
The engine governor will automatically adjust itself
to the load. No harm to the generator will result if it is
operated with no load connected. Proper utilization of the
receptacles located on the control panel is necessary to
prevent damage to either the receptacles or the generator.
The generator is a limited source of electrical power,
therefore, pay special attention to the receptacle and
generator ratings. The nameplate rating can be obtained
through a single receptacle as long as the receptacles
amperage rating is not exceeded.

12
OPM-131/E
2. A transfer switch designed for GFCI-equipped generators
is required to connect to an existing building distribution
system.
CAUTION: EQUIPMENT DAMAGE
Failure to properly limit and balance the load applied
to the generator will cause the generator to produce
low voltage and may damage the engine generator
set. It may also cause severe damage to the loads
connected to the generator at that time. Improper
loading of the generator set constitutes abuse and will
not be covered by warranty.

13 OPM-131/E
Although individual units and models vary slightly, the
normal voltage and frequency of the engine-generator
described in this manual are approximately as follows,
under varying loads:
LOAD vs. OUTPUT
Generator
Load
Speed
(RPM)
Frequency
(Hz)
Voltage
120V
Recpt
240V
Recpt
None 3690 61.5 120V 240V
Half 3600 60.0 120V 240V
Full 3510 58.5 120V 240V
The speed of the engine was carefully adjusted at the
factory so that the generator produces the proper voltage
and frequency. For normal usage, the speed setting should
not be changed. If the generator is being run continuously
on a very light load, it is often advisable to lower the
operating speed slightly.
The engine will govern itself at full speed. Intentionally
overriding the governor and operating the generator at
low voltage may damage both the generator and any load
connected to it. Running the engine at excessively high
speeds results in high voltage, which may significantly
shorten the life of light bulbs and appliances being used, as
well as possibly damaging the engine.
CAUTION: EQUIPMENT DAMAGE
SPEED ADJUSTMENTS SHOULD ONLY BE MADE BY
A QUALIFIED SERVICE TECH. Whenever making any
speed adjustments, check the YourGen meter and be
sure the voltage and speed are correct.
Output voltage should be checked periodically to ensure
continued proper operation of the generating plant and
appliances.
Hz -
This is the measured frequency of the generator set. See
the table in the RPM section above for an explanation of
voltage and frequency ranges under load.
V1 -
Output voltage of Line 1 (L1 on panel) to neutral. See the
Load vs. Output table for an explanation of voltage and
frequency ranges under load.
V2 -
Output voltage of Line 2 (L2 on panel) to neutral. See the
Load vs. Output table for an explanation of voltage and
frequency ranges under load.
V1-V2 -
Output voltage of Line 1 (L1) and Line 2 (L2). See the
Load vs. Output table for an explanation of voltage and
frequency ranges under load.
YOURGEN
The WINCO YourGen meter allows you to see useful
information about your generator from the front panel
by displaying RPMs, Voltage, frequency, load, hours, and
maintenance reminders. It also has the ability to display
warnings if any parameter gets outside of normal operation
range.
Cycle Button ( ) -
During normal operation, the display will toggle through
on fixed delay. If you want to see any specific item, you
can press the cycle button to move it to that setting. Once
the display is selected, the delay before it starts toggling is
approximately 5 seconds. This button is also used to reset
maintenance reminders.
RPM -
The meter will display the RPMs of the engine. This number
is calculated based upon frequency and is not directly
measured from the engine. The engine-generator must be
run at the correct speed in order to produce the proper
electrical voltage and frequency.
CAUTION: EQUIPMENT DAMAGE
The output voltage should be checked to ensure the
generator is working properly prior to connecting a
load to the generator. Failure to do so could result
in damage to equipment plugged into the unit and
possible injury to the individual.
Operating Speed
All engines have a tendency to slow down when a load
is applied. When the electrical load is connected to the
generator, the engine is more heavily loaded, and as a
result, the speed drops slightly. This slight decrease in
speed, together with the voltage drop within the generator
itself, results in a slightly lower voltage when the generator
is loaded to its full capacity than when running no load.
The slight variation in speed also affects the frequency
of the output current. This frequency variation has no
appreciable effect in the operation of motors, lights, and
most appliances. However, electronic equipment and clocks
will be affected if correct RPM is not maintained. See Load
vs. Output chart.

14
OPM-131/E
parameter that is out of specification. The panel will remain
flashing until the fault condition returns to within the
acceptable range, see following table.
Acceptable Range
Frequency 57-63 Hz
Voltage 110VAC-130VAC
VAC1-VAC2 220VAC-260VAC
Battery -
When the unit is off, the YourGen meter will display the
hours continuously using a coin cell back-up battery inside
the meter. Once the unit is running, the meter will get
power from the main unit battery.
Voltage 3.0V DC
Battery Type CR2032
Lifetime 10 Years
The battery has a 10 year lifetime, in the event you need to
change the battery, follow these instructions:
The battery is located in the control box near potentially live
AC terminals. To prevent electrocution while changing the
battery disable the unit by disconnecting the main battery,
spark plug and then open the receptacle panel. Locate the
backside of the YourGen meter. Gently pry the back plate
off using the slot located on top.
Once open, the battery will be located at the top. Using a
needle nose plier, carefully pull out the battery.
Replace the battery having the POSITIVE (+) side down.
Ensure the battery is secured between the battery
connections.
Replace the back plate of the meter and close the receptacle
panel using the screws to secure it. Reconnect the unit’s
main battery.
Battery
Install Battery Between These Two Points
Hours -
This displays the total running hours of the generator set.
When the generator is turned off, the hours will remain
displayed. The display is run on a CR2032, ten-year battery.
Once the unit is running, the battery connected to the unit
will then supply the power to the YourGen meter.
Load Bars -
These bars indicate how much load is being used on Line 1
(L1) and Line 2 (L2).
= 1-25% = 25-50% = 50-75% = 75-100%
It is good practice to monitor the YourGen Meter when
applying load.
This will ensure the generator is balanced.
Balanced Unbalanced
120 Volt and 240 Volt receptacles are provided for
connection to various loads.
The diagram below represents this 5,500 watt (rated
output) generator. A & B represent the 120 volt output
legs of this generator. Up to 2,750 watts at 120 volts
(22.9 Amps) can be drawn from the receptacles attached
to either A or B output legs. This generator is capable of
producing 22.9 Amps of 240 volt current at C. Check the
appliance or tool nameplates for the current and voltage
to insure compatibility. Remember that power taken from
C reduces the power available equally at both A and B and
vice versa.
Change Oil Warning -
After the first 50 hours, the engine oil should be changed.
The YourGen meter will light up the oil icon ( ) and the
word ‘change’ will flash. Once the oil has been changed,
press and hold the cycle button for approximately 5
seconds until the warning has been removed from the
display to reset the warning. The meter will then remind
you of oil changes on the appropriate schedule for your
generator. It is important to remember that the engine
manufacturer recommends changing the oil on a calendar
schedule even if the total number of operational hours have
not been reached. Certain operating environments may
also require more frequent oil changes.
Alarms -
The display will start blinking and toggle to the first

15 OPM-131/E
C. Replace the oil drain bolt making sure the sealing
washer is in place.
D. With the engine in a level position, fill with new oil.
Refer to the table on page 6 for the proper grade of oil.
NOTE: This engine requires 34 ounces (1.2 quarts) of oil if it
is completely drained. Use caution when refilling the engine
as some residual oil may have remained in the engine.
Always use the dipstick when filling the engine with oil to
prevent overfilling.
E. Replace filter plug.
F. Start the engine and warm it up.
G . After warming up the engine, recheck the oil level
and refill as necessary to bring it to the proper level.
DUAL ELEMENT AIR FILTER
Clean and/or replace the foam pre-cleaner and the air filter
annually or every 100 hours. Service more often under
dusty conditions.
WARNING: EQUIPMENT DAMAGE
Never start or run the engine with the air filter
removed.
A. Remove the wing nut (1) from the air cleaner cover
and remove cover (2).
B. Remove the wing nut (3) from the air filter and remove
the filter.
C. Remove the foam filter element (5) from the paper
filter element (4).
D. Inspect both filter elements and replace them if
damaged. Always replace the paper filter element at
the scheduled interval.
E. To loosen debris, gently tap the air filter on a hard
surface. If the air filter is excessively dirty replace with a
new filter. You can use pressurized air (not to exceed
30 psi) to clean the filter. Always blow the compressed
air from inside to the outside.
F. Wash the foam filter element in liquid detergent and
water. Then allow it to thoroughly air dry. Dip the foam
filter element in clean engine oil and squeeze out all
the excess before reinstalling it. The engine will smoke
when started if too much oil is left in the foam.
G. Clean the dirt from the inside of the air cleaner body
and cover.
ENGINE CARE
MAINTENANCE SCHEDULE
If major engine service or repair is required, contact an
authorized engine service center. The manufacturer of
these engines has established an excellent world-wide
engine service organization. Engine service is very likely
available from a nearby authorized dealer or distributor. See
following table.
CHECKING THE OIL LEVEL
The oil level must always be checked before the engine is
started. Refer to the LUBRICATION section of this manual
for instructions on checking the oil level. Take care to
remove any dirt or debris from around the oil plug before
removing. Be sure the oil level is maintained.
CHANGING THE OIL
Refer to the Maintenance Schedule Chart for required oil
change intervals.
Outdoor temperatures determine the proper oil viscosity for
the engines. Winco recommends our 5W-30 fully synthetic
oil to give you excellent protection in cold temperatures
while maintaining excellent performance in warmer
weather
A. Start the engine and warm it up, stop the engine and
remove the spark plug wire to prevent it from
accidentally being started.
B. Remove the oil drain bolt at base of the engine and
drain the oil into an approved container.
DIP STICK
DRAIN BOLT WASHER

16
OPM-131/E
H. Reinstall the air filter in housing making sure the
packing is in place beneath the filter element. Tighten
the wing nut securely.
I. Install and secure the cover.
SPARK PLUG
Replace annually or every 300 hours of operation. Always
replace with the same spark plug that came in the engine
and check gap before installing. Spark plug gap is 0.030”.
Poor spark will also occur if spark plug wire does not fit
firmly on spark plug. If this happens, reform the terminal to
fit firmly on spark plug tip.
CARBON CANISTER
Designed to collect, store, and dispose of fuel vapors
created in the fuel tank/fuel system. The canister should last
the life of the unit as long as it stays dry.

17 OPM-131/E
TROUBLESHOOTING
Problem Possible Causes
Won’t start Low oil level
Fouled spark plug
Out of fuel
Start switch in OFF position
Fuel Valve turned off
Plugged fuel filter
Blown fuse in key switch
Voltage too low AVR adjustment
Defective stator
Defective rotor (field)
Defective AVR
Circuit breaker trips Defective load
Defective receptacle
Excessive load
Voltage too high AVR adjustment
Engine speed is too high
Generator overheating Overloaded
Insufficient ventilation
No output voltage Short in load (disconnect)
Tripped or defective circuit breaker
Broken or loose wire
Defective receptacle
No residual magnetism (in
generator)
Defective stator
Defective rotor (field)
Defective AVR
Shorted diodes on rotor
GFCI receptacle tripped

18
OPM-131/E
GENERATOR CARE
Proper care and maintenance of the generator is necessary
to ensure a long trouble free life.
EXERCISING THE GENERATOR
The generator should be operated every three to four
weeks. It should be operated for a period of time sufficient
to warm the unit up and to dry out any moisture that has
accumulated in the windings. If left, this moisture can cause
corrosion in the winding. Frequent operation of the engine-
generator set will also ensure that the set is operating
properly, should it be needed in an emergency.
GENERATOR MAINTENANCE
Any major generator service, including the installation
or replacement of parts, should be performed only by a
qualified electrical service technician. USE ONLY FACTORY
APPROVED REPAIR PARTS.
A. Bearing - The bearing used in these generators is a
heavy duty, double sealed ball bearing. They require
no maintenance or lubrication.
B. Receptacles - Quality receptacles have been utilized. If a
receptacle should become cracked or otherwise
damaged, replace it. Using damaged or cracked
receptacles can be both dangerous to the operator
and destructive to the equipment.
CLEANING
Remove dirt and debris with a cloth or brush. DO NOT
use high pressure spray to clean either the engine or the
generator. The high pressure spray could contaminate the
fuel system and the generator components.
1. Keep the air inlet screen on both the engine and
generator free of any dirt or debris to ensure proper
cooling. At least yearly, remove the blower housing on
the engine and clean the chaff and dirt out of the engine
cooling fins and fly wheel. Clean more often if necessary.
Failure to keep these areas clean may cause overheating
and permanent damage to the unit.
2. Periodically clean muffler area to remove all grass, dirt,
and combustible debris to prevent a fire.
3. On engine mufflers equipped with spark arresters, the
spark arrester must be removed every 50 hours for cleaning
and inspection. Replace if damaged.

19 OPM-131/E
WIRING DIAGRAM
G1
GND
GND
GND
GND
GND
N
N
N
N
N

20
OPM-131/E WINCO INC. • 225 S. CORDOVA AVE • LE CENTER, MN 56057 • 507-357-6821
WINCO warrants to the original purchaser for 36 months or 1000 hours, whichever occurs first, that goods manufactured
or supplied by it will be free from defects in workmanship and material, provided such goods are installed, operated and
maintained in accordance with WINCO written instructions and applicable codes.
WINCO’s sole liability, and Purchaser’s sole remedy for a failure under this warranty, shall be limited to the repair of the
product. At WINCO’s option, material found to be defective in material or workmanship under normal use and service
will be repaired or replaced. For warranty service, return the product within the warranty period, to your nearest WINCO
Authorized Service Center or to WINCO in Le Center Minnesota.
Duration Consumer, Commercial and Rental
Parts & Labor: 24 Months
Parts Only: 24-36 Months
EXCLUSIONS:
• Normal maintenance consumables or labor.
• This warranty does not cover travel time, mileage or labor for removal or re-installation of WINCO product from its
application.
• Normal wear and tear.
• Costs of rental equipment.
• WINCO does not warrant engines. Engines are covered exclusively by the warranties of their respective manufacturers.
• WINCO does not warrant component parts that are warranted by their respective manufacturers.
• WINCO does not warrant modifications or alterations which were not made by WINCO.
• WINCO does not warrant products which have been subjected to misuse and/or negligence or have been involved in
an accident. Proof of proper maintenance must be furnished upon request.
THERE ARE NO EXPRESS WARRANTIES OTHER THAN THOSE DESCRIBED HEREIN. THERE ARE NO OTHER
WARRANTIES, EXPRESSED OR IMPLIED, OR OTHERWISE CREATED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
MERCHANTABILITY, OR WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE.
WINCO is liable for the repair or replacement of the product only and is not liable for incidental or consequential damages
as permitted by your state. This warranty gives you specific legal rights which may vary from state to state.
CALIFORNIA EVAPORATIVE EMISSION CONTROL
WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board is pleased to explain the evaporative emission control system’s warranty on your model
2020 generator. In California, new equipment that uses small off-road engines must be designed, built, and equipped
to meet the State’s stringent anti-smog standards. WINCO must warrant the evaporative emission control system on
your generator for the period listed below provided there has been no abuse, neglect or improper maintenance of your
equipment leading to the failure of the evaporative emission control system.
Your evaporative emission control system may include parts such as: carburetor, fuel tank, fuel cap, fuel lines (for liquid fuel
and fuel vapors), fuel line fittings, fuel line clamps, carbon canisters, and carbon canister mounting brackets.
MANUFACTURER’S WARRANTY COVERAGE
The evaporative emission control system is warranted for two years. If any evaporative emission related parts on your
equipment are defective, the parts will be repaired or replaced by WINCO.
ENGINE GENERATOR SET
36 MONTH
LIMITED WARRANTY