1250W INVERTER
GENERATOR
Model #56125i
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IMPORTANT:
Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,
ease of operation, and operator safety. When properly cared for, this product will supply you years
of rugged, trouble-free performance. Pay close attention to the rules for safe operation, warnings,
and cautions. If you use your tool properly and for intended purpose, you will enjoy years of safe,
reliable service.
NEED HELP? CONTACT US!
Have product questions? Need technical support?
Please feel free to contact us at:
800-232-1195 (M-F 8AM-5PM CST)
techsupport@wenproducts.com
WENPRODUCTS.COM
TABLE OF CONTENTS
Generator Identification
Service Record
Introduction
Safety Information
Generator Components
Generator Preparation
Starting the Generator
Stopping the Generator
Subsequent Starting of the Generator
Using the Generator
Maintenance & Care
Specifications
Troubleshooting
Storage & Transport
Exploded View and Parts List
Wiring Diagram
Warranty Statement
2
3
3
4
4
7
8
10
12
12
13
15
19
20
20
21
26
27
GENERATOR IDENTIFICATION
If assistance for information or service is required, please contact the Customer Service Help Line by calling
800-232-1195; customer will be asked to provide generator information when calling.
Refer to the illustration below for the location of the serial number. Record generator information in the spaces
provided below.
DATE OF PURCHASE: ______________________________________________
PURCHASED FROM: ______________________________________________
GENERATOR MODEL NUMBER: ____________________________________
ENGINE SERIAL NUMBER: _________________________________________
SERIAL NUMBER
SERVICE RECORD
Record Service Dates:
Date
Date
Date
Date
Date
Date
Change Oil
Change Spark Plug
Clean Fuel Tank
Clean Air Cleaner
NOTE: WE SUGGEST RUNNING YOUR GENERATOR AT LEAST ONCE A MONTH FOR 15 TO
30 MINUTES IN ORDER TO MAXIMIZE THE LIFESPAN OF THE GENERATOR.
PLUG A SMALL LOAD IN TO MAKE SURE THE OUTLETS ARE PRODUCING ELECTRICITY.
3
INTRODUCTION
Thank you for purchasing a WEN Generator. This manual provides information regarding the safe operation and
maintenance of this product. Every effort has been made to ensure the accuracy of the information in this manual. WEN reserves the right to change this product, manual and specifications at any time without prior notice.
Please keep this manual available to all users during the entire life of the generator.
This manual contains special messages to bring attention to potential safety
concerns and generator damage as well as helpful operating and servicing
information. Please read all the information carefully to avoid injury and
machine damage.
QUESTIONS? PROBLEMS?
In order to answer questions and solve problems in the most efficient and speedy manner, contact Customer
Service at (800) 232-1195, M-F 8-5 CST
NOTICE REGARDING EMISSIONS
Engines that are certified to comply with U.S. EPA emission regulations for SORE (Small Off Road Equipment),
are certified to operate on regular unleaded gasoline, and may include the following emission control systems:
(EM) Engine Modifications and (TWC) Three-Way Catalyst (if so equipped).
SAFETY INFORMATION
Before operating this generator read and observe all warnings, cautions, and instructions both on the generator and
in this owner’s manual.
NOTE: The following safety information is not meant to cover all possible conditions and situations that may occur.
This safety alert symbol is used to identify safety information about hazards that can result in personal injury.
A signal word (DANGER, WARNING, or CAUTION) is used with the alert
symbol to indicate the likelihood and the potential severity of injury. In addition,
a hazard symbol may be used to represent the type of hazard.
DANGER indicates a hazard, which, if not avoided, will result in death or serious injury.
WARNING indicates a hazard, which, if not avoided, could result in death or serious injury.
CAUTION indicates a hazard, which, if not avoided, might result in minor or moderate injury.
CAUTION when used without the alert symbol, indicates a situation that could result in damage to the engine or
generator.
4
SAFETY INFORMATION
For any questions regarding the hazard and safety notices listed in this manual or on the product, please
call (800) 232-1195 M-F 8-5 CST before using the generator.
DANGER: CARBON MONOXIDE
Using a generator indoors CAN KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide (CO). This is a poison gas you cannot see or smell. If you can smell the generator exhaust, you are
breathing CO. But even if you cannot smell the exhaust, you could be breathing CO.
NEVER use a generator inside homes, garages, crawl spaces, or other partially enclosed areas. Deadly
levels of carbon monoxide can build up in these areas. Using a fan or opening windows and doors does
NOT supply enough fresh air. ONLY use a generator outside and far away from windows, doors, and
vents. These openings can pull in generator exhaust.
Even if you use a generator correctly, CO may leak into the home. ALWAYS use a battery-powered or
battery-backup CO alarm in the home. If you start to feel sick, dizzy, or weak after the generator has been
running, move to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.
WARNING: The exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
WARNING: This generator may emit highly flammable and explosive gasoline vapors, which
can cause severe burns or even death if ignited. A nearby open flame can lead to explosion even
if it isn’t directly in contact with gasoline.
GENERATOR SAFETY RULES:
1) Do not operate near open flame.
2) Do not smoke near generator.
3) Always operate on a firm, level surface.
4) Always turn generator off before refueling. Allow
generator to cool for at least 2 minutes before removing fuel cap. Loosen cap slowly to relieve pressure in tank.
5) Do not overfill fuel tank. Gasoline may expand
during operation. Do not fill to the top of the tank.
Allow for expansion.
6) Always check for spilled fuel before operating.
7) Empty fuel tank before storing or transporting the
generator.
8) Do not use in rainy conditions.
9) ALWAYS ground the generator before using it (see
the “Ground the Generator” portion of the “Generator Preparation” section).
10) Generator should only be plugged into electrical devices, either directly or with an extension cord.
NEVER connect to a building’s electrical system without a qualified electrician. Such connections must
comply with local electrical laws and codes. Failure to
comply can create a back-feed, which may result in
serious injury or death to utility workers.
11) Use a ground fault circuit interrupter (GFCI) in
highly conductive areas such as metal decking or steel
work. GFCIs are available in-line with some extension
cords.
12) Do not touch bare wires or receptacles (outlets).
13) Do not allow children or non-qualified persons to
operate the generator.
5
SAFETY INFORMATION
GENERATOR SAFETY RULES (CONTINUED):
14) Do not touch hot surfaces. Pay attention to warning labels on the generator identifying hot parts of
the machine.
20) Do not exceed the wattage capacity of the generator
by plugging in more electrical devices than the unit can
handle.
15) Allow generator to cool down after use before
touching engine or areas of the generator that become hot during use.
21) Do not turn on electrical devices until after they are
connected to the generator.
16) Only use generator for its intended purposes.
17) Operate only on dry, level surfaces.
18) Allow generator to run for several minutes before connecting electrical devices.
19) Shut off and disconnect any malfunctioning devices from generator.
22) Turn off and then unplug all connected electrical
devices before stopping the generator.
23) Turn the engine switch to “OFF” position when the
engine is not running.
CAUTION: Misuse of this generator can damage
it or shorten its life and void the warranty.
WARNING: This generator produces heat when running. Temperatures
near exhaust can exceed 1500 F (650 C).
SAVE THESE INSTRUCTIONS – This manual contains important instructions for the WEN generator that
should be followed during installation and maintenance of the generator.
Generators vibrate in normal use. During and after the use of the generator, inspect both the generator as well as
extension and power supply cords for damage resulting from vibration. Have damaged items repaired or replaced
as necessary. Do not use plugs or cords that show signs of damage such as broken or cracked insulation.
For power outages, permanently installed stationary generators are better suited for providing backup power to the
home. Even a properly connected portable generator can become overloaded. This may result in overheating or
stressing of the components, possibly leading to a generator failure.
WARNING: If this generator is used as a supply for a building’s wiring system, the generator must be installed by a qualified electrician and
connected to a transfer switch as a separately derived system in accordance with the National Electrical Code, NFPA 70. The generator shall
be connected to a transfer switch that switches all conductors excluding
the equipment grounding conductor. The frame of the generator shall
be connected to an approved grounding electrode.
6
GENERATOR COMPONENTS
Use the illustrations below to become familiar with the locations and functions of the various components and
controls of this generator.
Pressure Relief
Valve
Gas Cap
Spark Plug
Access Panel
Eco-Mode
Indicator Lights
3-in-1 Switch
Recoil Starter
120V Duplex Receptacle
Parallel Connection Ports
USB Charger
Grounding Nut
7
GENERATOR PREPARATION
USING THE GENERATOR FOR THE FIRST TIME
CAUTION: The following section describes the necessary steps to prepare the generator for use. If after reading
this section, you are unsure about how to perform any of the steps please call (800) 232-1195 M-F 8-5 CST for
customer service. Failure to perform these steps properly can damage the generator or shorten its life.
STEP 1 - ADD OIL
The generator is shipped without oil. User must add the proper amount of oil before operating the generator for
the first time. The max oil capacity of the engine crankcase is 0.27 quarts (310 mL). For general use (above 40° F),
we recommend SAE 30 or 10W-30 (30W oil), 4-stroke engine oil.
To add oil, follow these steps:
Note: make sure the generator is on a level surface. Tilting the generator to assist in filling will cause oil to flow
into the engine areas and will cause damage. Keep the generator level!
A funnel is recommended for easy installation.
1. Remove the panel on the lefthand side of
the generator by removing the five screws
along the outside edge of the panel.
ENGINE OIL RECOMMENDATIONS
Select good quality detergent oil bearing the American Petroleum Institute (API) service classifications SJ, SL, or SM (synthetic oils may be used). Use the ASE viscosity grade of oil from
the following chart (Fig. 1) that matches the starting temperature
anticipated before the next oil changes.
2. Remove the oil plug from the engine
(Fig. 2).
3. Add oil slowly, being careful not to
overfill the unit. Continue adding oil until
the oil mark reaches the second thread
from the lip of the oil fill opening (Fig.
2 - Upper Fill Line). Do not overfill the
crankcase. The generator is equipped with
a low-oil sensor and will not start without a
sufficient amount of oil.
4. Check for oil leaks before firmly
tightening the oil plug. Replace the side
panel and screws upon completion.
Oil Plug
Fig. 1 - Engine Oil Temperature Recommendation
CAUTION: Air cooled engines run hotter than automotive
engines. The use of non-synthetic multi-viscosity oils (5W-30,
10W-30, etc.) in temperatures above 40° F will result in higher
than normal oil consumption. When using a multi-viscosity oil,
check the oil level more frequently than you would otherwise.
Upper Level
Fill Line
Oil Plug
Lower Level
Fill Line
Fig. 2 - Oil Fill Opening, Oil plug and Oil Level
8
GENERATOR PREPARATION
WARNING: This generator may emit highly flammable and explosive gasoline vapors,
which can cause severe burns or even death if ignited. A nearby open flame can lead to
explosion even if not directly in contact with gasoline.
Step 2 - ADD GASOLINE
Use fresh (within 30 days from purchase), lead-free gasoline with
a minimum of 87 octane rating. Do not mix oil with gasoline.
Adding a fuel stabalizer will help prolong the storage life of the
gasoline.
To add gasoline, follow these steps:
1. Make sure the generator is on a level surface.
2. Unscrew gas cap and set aside.
IMPORTANT:
• Never use an oil/gasoline mixture.
• Never use old gasoline.
• Avoid getting dirt or water into the fuel
tank.
• Gasoline can age in the tank and make
starting difficult. Never store generator
for extended periods of time with fuel
in the tank.
NOTE: The fuel cap may be tight and hard to unscrew. Unscrew
the cap slowly to allow any built up pressure to bleed out.
Fig. 3
3. Slowly add unleaded gasoline to the fuel tank. Be careful not to overfill.
The capacity of the fuel tank is .69 gallons (2.6 L).
NOTE: Do not fill the fuel tank to the very top. Gasoline will expand and
spill over during use even with the fuel cap in place.
4. Reinstall fuel cap and wipe clean any spilled gasoline with a dry cloth.
STEP 3 - GROUND THE GENERATOR
Ground the generator by tightening the grounding nut on the front control
panel against a grounding wire (Fig. 3). A generally acceptable grounding
wire is a No. 12 AWG (American Wire Gauge) stranded copper wire. This
grounding wire should be connected at the other end to a copper, brass, or
steel-grounding rod that is driven into the earth. Wire and grounding rods
are not included with the generator.
Eco-Mode
Switch
Grounding Nut
Grounding codes can vary by location. Contact a local electrician to check the area codes.
NOTE: After completing the above preparation, the generator is ready to be started.
WARNING: Failure to properly ground the generator increases your risk of electric
shock.
9
STARTING THE GENERATOR
Before starting the generator, make sure you have read and performed the steps in the “Generator Preparation”
section of this manual. If you are unsure about how to perform any of the steps in this manual please call (800)
232-1195 M-F 8-5 CST for customer service.
DANGER: CARBON MONOXIDE - USING A GENERATOR INDOORS CAN KILL
YOU IN MINUTES.
Using a generator indoors CAN KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide (CO). This is a poison gas you cannot see or smell. If you can smell the generator exhaust, you are
breathing CO. But even if you cannot smell the exhaust, you could be breathing CO.
NEVER use a generator inside homes, garages, crawl spaces, or other partially enclosed areas. Deadly
levels of carbon monoxide can build up in these areas. Using a fan or opening windows and doors does
NOT supply enough fresh air. ONLY use a generator outside and far away from windows, doors, and
vents. These openings can pull in generator exhaust.
Even if you use a generator correctly, CO may leak into the home. ALWAYS use a battery-powered or
battery-backup CO alarm in the home. If you start to feel sick, dizzy, or weak after the generator has been
running, move to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.
WARNING: The exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
WARNING: This generator may emit highly flammable and explosive gasoline vapors, which
can cause severe burns or even death if ignited. A nearby open flame can lead to explosion even
if it isn’t directly in contact with gasoline.
WARNING: This generator produces powerful voltage, which can
result in electrocution.
ALWAYS ground the generator before using it (see the “Ground the Generator” portion of the “Generator
Preparation” section).
Generator should only be plugged into electrical devices, either directly or with an extension cord. NEVER
connect to a building electrical system without a qualified electrician. Such connections must comply with local
electrical laws and codes. Failure to comply can create a back-feed, which may result in serious injury or death to
utility workers.
Use a ground fault circuit interrupter (GFCI) in highly conductive areas such as metal decking or steel work. GFCIs are available in-line with some extension cords.
Do not use in rainy or wet conditions. Do not touch bare wires or receptacles (outlets). Do not allow children or
non-qualified persons to operate.
CAUTION: Disconnect all electrical loads from the generator before
attempting to start.
10
STARTING THE GENERATOR
STARTING THE ENGINE (FIG. 4)
To start the generator, perform the following steps:
1. Unplug all electrical devices from the generator before starting. Otherwise it
can be difficult to start the engine.
2. To maximize safety, make sure the generator is properly grounded (Refer to
“Ground the Generator” on page 9).
Fig. 4A
3. Check the oil and fuel levels.
4. Turn the ECO-MODE switch to “OFF” (Fig. 3).
5. Open pressure relief valve on top of fuel cap (Figure 4A). Rotate clockwise to
the “ON” position.
6. Turn the 3-in-1 switch to the “CHOKE” position (Figure 4B).
7. Pull on the recoil starter handle slowly until a slight resistance is felt, then pull
quickly to start the engine. Return cord gently into the recoil starter. Never allow the cord to snap back.
Fig. 4B
8. Once the engine has started, slowly turn the 3-in-1 switch to the “ON” position (Figure 4C).
9. To turn the generator off, turn the knob to the OFF position (Figure 4E).
Allow the generator to run for several minutes before attempting to connect any
electrical devices. This allows the generator to stabilize its speed and temperature.
NOTE: Turn the knob to the Fuel Shut-off Position (Figure 4D) in order to
stop the flow of fuel from the gas tank to the engine.
Fig. 4C
Fig. 4D
Fig. 4E
ECO-MODE IDLE SWITCH (Fig. 3)
This generator is equipped with an Eco-Mode
Idle Control Switch. Engaging the switch automatically adjusts the engine to match the load.
When the electrical load changes, the generator engine will automatically speed up and slow
down as needed. This reduces fuel consumption and noise levels. Keep this switch engaged
when the power load requirement is less than
500W. Do not engage the Idle Control Switch
when the total load is more than 500W. The
generator engine must run at full speed to supply power for anything over 500W.
11
STOPPING THE GENERATOR
TO STOP THE GENERATOR
1. Turn off all electrical devices prior to unplugging them from the generator. Unplugging running devices can
cause damage to the generator. After turning the devices off, unplug them all from the generator.
2. Turn the 3-in-1 knob to the “OFF” position (Fig. 4E).
3. Close the pressure relief valve on top of gas cap (Fig. 4A). Rotate counterclockwise to the “OFF” position.
WARNING: Allow the generator to cool for several minutes before touching areas
that become hot during use.
CAUTION: Allowing gasoline to sit in the fuel tank for long periods of time can make it difficult to start the generator in the future. Never store the generator for extended periods of time
with fuel in the fuel tank. Refer to Generator Storage Section.
SUBSEQUENT STARTING OF THE GENERATOR
If this is not the first time using the generator, the user should take the following steps to prepare it for operation.
IMPORTANT: At this point the user should be familiar with the procedures described in
the sections titled “Starting the Generator” and “Generator Preparation.” If the user has
not yet read these sections, go back and read them now.
Step 1 - CHECK THE OIL
Oil consumption is normal during generator use. The generator is equipped with a low oil pressure shutoff to
protect it from damage. The oil level of the engine should be checked before each use to ensure that the engine
crankcase contains sufficient lubricant.
IMPORTANT:
• Use only UNLEADED gasoline.
1. Make sure the generator is on a level surface. Access the oil • Do not use old gasoline.
plug by removing the lefthand side panel using a Phillip’s head • Never use an oil/gasoline mixture.
• Avoid getting dirt or water into the fuel tank.
screwdriver.
To check or add oil, follow these steps:
2. Remove the oil plug and check the oil level.
3. If oil level is below the second thread from the lip of the oil fill opening, slowly add oil until the engine crankcase is filled. Use a funnel for maximum efficiency.
4. Reinstall and tighten oil cap and side panel before starting the engine.
Step 2 - CHECK THE FUEL LEVEL
Before starting the generator, check to see that there is sufficient gasoline in the fuel tank. Add additional gasoline
as necessary but leave sufficient room in the tank for expansion.
12
SUBSEQUENT STARTING OF THE GENERATOR
Step 3 - GROUND THE GENERATOR
WARNING: Failure to properly ground the generator increases the chances of electric
shock.
Ground the generator by tightening the grounding nut on the front control panel against a grounding wire (Fig.
3). A generally acceptable grounding wire is a No. 12 AWG (American Wire Gauge) stranded copper wire. This
grounding wire should be connected at the other end to a copper, brass, or steel-grounding rod that is driven into
the earth. Wire and grounding rod are not included in generator contents. Grounding codes can vary by location.
Contact a local electrician for area codes.
USING THE GENERATOR
Before connecting electrical devices, allow the generator to run for a few minutes to stabilize the speed and voltage
output.
CAUTION: Become familiar with the markings on the panel before connecting electrical devices.
Connect electrical devices running on AC current according to their wattage requirements. The chart in Figure 5
shows the rated and surge wattage of the generator.
The rated (running) wattage is the wattage the generator can produce on a continuous basis.
The surge wattage is the maximum amount of power the generator can produce for an extremely short period of
time (seconds). Many electrical devices such as refrigerators require short bursts of extra power in addition to the
rated wattage listed by the device to start their motors. The surge wattage ability of the generator covers this extra
power requirement.
Item
Rated (Running) Wattage
Surge Wattage
56125i
1000
1250
Fig. 5 - Generator Wattage
The total running wattage requirement of the electrical devices connected to the generator should not exceed the
rated wattage of the generator itself. To calculate the total wattage requirement of the electrical devices you plan
to connect, find the rated (or running) wattage of each device. This number should be listed somewhere on the
device or in its instruction manual. If this wattage cannot be found, calculate it by multiplying the Voltage requirement by the Amperage drawn:
Watts = Volts x Amperes
13
USING THE GENERATOR
If the electrical specifications are not available for your electronic devices, estimate the watts requirement of the
device by using the chart in Figure 6.
When the rated wattage requirement of each electrical device has been determined, add these numbers to find
the total rated wattage needed. If this number exceeds the rated wattage of the generator, DO NOT connect all
these devices. Select a combination of electrical devices, which have a total rated wattage lower than or equal to
the rated wattage of the generator.
CAUTION: The generator can run at its surge wattage capacity for only a short time. Connect electrical devices
requiring a rated (running) wattage equal to or less than the rated wattage of the generator. Never connect devices
requiring a rated wattage equal to the surge wattage of the generator.
Tool or Appliance
Microwave
Well water pump
Saw - reciprocating
Sump pump
Refrigerator freezer
Computer
Electric drill
Television
Deep freezer
Garage door opener
Stereo
Box fan
Clock radio
Security system
DVD player / VCR
Common light bulb
Rated (Running) Watts ADDITIONAL SURGE WATTS
1000
0
1000
1000
960
1040
800
1200
800
1200
800
0
600
900
500
0
500
500
480
0
400
0
300
600
300
0
180
0
100
0
75
0
Fig. 6 - Estimated wattage requirements of common electrical devices
Note: The above wattage figures are estimates. Check the wattage listed on the electrical device before consulting
this chart. Once the electrical devices have been chosen, connect them according to the following procedure:
1. Plug in each electrical device, making sure that the device is turned off.
2. Check the overload and output lights. If the overload light is on, unplug the electronics, then restart the generator before plugging the load back in. If the overload light continues to illuminate, reduce the load before continuing. Wait several minutes and try again. If the power light still does not come on, call the customer service number for further instructions.
14
USING THE GENERATOR
CAUTION: Do not connect 50Hz loads to the generator.
SOME NOTES ABOUT POWER CORDS
Long or thin cords can drain the power provided to an electrical device by the generator. When using such cords,
allow for a slightly higher rated wattage requirement by the electrical device. See Figure 7 for recommended
cords based on the power requirement of the electrical device.
Device Requirements
Amps
Watts (120V)
2.5
300
5
600
7.5
900
10
1200
*NR = Not Recommended
Max. Cord Length (ft) by Wire Gauge
#8 wire
#10 wire
#12 wire
#14 wire
#16 wire
NR
NR
NR
375
250
NR
NR
300
200
125
NR
350
200
125
100
NR
250
150
100
50
Fig. 7 - Maximum Extension Cord Lengths by Power Requirement
If an overload occurs, shut down the generator. Unplug all electrical devices and wait five minutes. Then, start the
unit back up again to get power back.
MAINTENANCE & CARE
Proper routine maintenance of the generator will help prolong the life of the machine. Please perform maintenance checks and operations according to the schedule in Figure 8.
If there are any questions about the maintenance procedures listed in this manual, please call (800) 232-1195 M-F
8-5 CST.
CAUTION: Never perform maintenance operations while the generator is running.
Recommended
Maintenance Schedule
(whichever sooner)
Check
level
Engine oil
Replace
Check
Air cleaner
cartridge
Clean
Spark plug
Fuel tank
Carburetor
Check/
re-gap/
clean
Change
Check
level
Clean
Drain
Each 8
hours or
daily
Every 25
hours
Every 3
Every 6
months or months or
50 hours 100 hours
Every
year
As
necessary
x
x*
x
x*
x
x
x
x
x
x
x
x
x
Fig. 8 - Recommended maintenance schedule
* Clean/change more often under dusty conditions or operating under heavy load.
15
MAINTENANCE & CARE
CLEANING THE GENERATOR
Never clean the generator when it is running! Never clean with a bucket of water or a hose. Water can get inside
the working parts of the generator and cause corrosion or a short circuit.
Always try to use the generator in a cool, dry place. If the generator becomes dirty, clean the exterior with a damp
cloth, a soft brush, a vacuum or pressurized air.
CHECKING THE OIL
Check the oil level of the generator according to the Recommended Maintenance Schedule in Fig. 9. The generator is equipped with an automatic shutoff to protect it from running on low oil. The generator should be checked
before each use for proper oil level. This is a critical step for proper engine starting. To check the oil level:
1. Make sure the generator is on a level surface. Access the oil plug by removing the lefthand side panel using a
Phillip’s head screwdriver.
2. Remove the oil plug and check the oil level.
3. Slowly add oil until the oil level is just below the second thread down from the lip of the oil fill opening. Use a
funnel for maximum efficiency.
4. Reinstall and tighten oil cap and side panel before starting the engine.
Oil Plug
Upper Level
Fill Line
Oil Plug
Lower Level
Fill Line
Fig. 9
CHANGING/ADDING OIL
Change the oil according to the Recommended Maintenance Schedule in Figure 9 by removing the side panel of
the generator opposite of the recoil starter. Change the oil when the engine is warm. This will allow for complete
drainage. Change oil more often if operating under heavy load or high ambient temperatures. It is also necessary to drain the oil from the crankcase if it has become contaminated with water or dirt. The oil capacity of the
generator engine is .27 quarts (310 mL). Add oil when the oil level is low. For proper type and weight of oil refer
to “add oil” portion of the “Generator Preparation” section (page 8).
1. Place generator on elevated platform such as table or desk. Put a container next to it to hold the used oil. Turn
the pressure relief valve to “OFF” position.
2. Remove the left side panel by removing the five screws found around its outside edge. Then, unscrew the oil
plug from the engine and set aside.
16
MAINTENANCE & CARE
3. Tilt the generator so the used oil flows from the engine into the container. Tilt some more to ensure all oil is
out of the crankcase.
4. Return the generator to its upright and level position. Fill the crankcase with fresh oil and reinstall the oil plug.
Clean any oil spillage before closing the side panel.
TO REFILL THE CRANKCASE WITH OIL:
1. Make sure the generator is on a level surface. Tilting the generator to assist in filling will cause oil to flow into
engine areas and will cause damage. Keep generator level!
2. Remove the left side panel and then remove the oil plug from the engine.
3. Using a funnel or appropriate dispenser, add the correct amount of oil into the crankcase. The engine is
equipped with a low oil pressure sensor and will not start if the amount of oil is insufficient.
4. Reinstall oil plug and the left side panel.
NOTE: Never dispose of used motor oil in the trash or down a drain. Please call a local recycling center or auto
garage to arrange oil disposal.
AIR CLEANER MAINTENANCE
Routine maintenance of the air cleaner helps maintain proper airflow to the carburetor. Occasionally check that
the air cleaner is free of excessive dirt. Refer to Recommended Maintenance Schedule in Figure 8.
1. Remove the left side panel by unscrewing the five screws around
the outside edge.
2. Take the cover off of the air cleaner assembly by releasing the
snap-fit tab at the top of the compartment in order access the foam air
cleaner inside (Fig. 10).
3. Check and clean the foam air cleaner element. Replace with a new
one if the element is damaged. Good elements can be washed in
soapy water, dried and reused. There is no need to add oil to the element. Wipe off excessive oil from the air cleaner case. Small amount
of oil in the element is normal and necessary for the engine to work
properly.
4. Reinstall the air cleaner element, cartridge and side panel.
Air Cleaner Cover
Fig. 10
17
MAINTENANCE & CARE
SPARK PLUG MAINTENANCE (Fig. 11)
The spark plug is important for proper engine operation. A good spark plug should be intact, free of deposits,
and properly gapped. Refer to Recommended Maintenance in Figure 8 (p. 15). To inspect the spark plug:
1. Open the spark plug access panel at the top of the generator using the aid of a coin.
2. Remove spark plug boot. Be careful not to tear insulation or wire.
3. Unscrew the spark plug from the engine using the spark plug wrench provided. There is limited space for the
wrench to turn. Use both rows of holes in the spark plug wrench to gain leverage to loosen the plug.
4. Visually inspect the spark plug for cracks or excessive electrode wear. Replace as necessary.
5. Measure the plug gap with a wire gauge. The gap should be 0.6-0.7 mm (0.024-0.028 in).
6. If re-using the spark plug, use a wire brush to clean any dirt from around the spark plug base then re-gap the
spark plug.
7. Screw the spark plug back into the spark plug hole using the spark plug wrench. Do not over-tighten spark
plug. Recommended tightening of spark plug is ½ to ¾ of a turn after spark plug gasket contacts spark plug hole.
Reinstall the spark plug boot and the spark plug access panel lid.
DRAINING THE FUEL TANK
NOTE: NO OIL CAN BE IN THE UNIT WHEN
YOU ARE DRAINING THE FUEL TANK.
Clean fuel tank each year and before storing the generator for longer than one to two months. To drain the fuel
tank and carburetor:
Spark Plug
Boot
1. Remove the gas cap; carefully turn the generator over
to pour the gasoline in the fuel tank to appropriate container.
2. Once fuel is drained, reinstall the fuel cap.
Spark Plug
Fig. 11 - Spark Plug Location
3. Turn on the engine and keep the engine running until
it stops. This burns out the fuel in the carburetor and fuel
tank.
4. Store the emptied gasoline in a suitable place.
CAUTION: Do not store fuel for more than two
months.
NOTE: WE SUGGEST RUNNING YOUR GENERATOR AT LEAST ONCE A MONTH IN ORDER
TO MAXIMIZE THE LIFESPAN OF THE GENERATOR.
18
MAINTENANCE & CARE
DRAINING THE CARBURETOR
After each use, open up the carburetor drain with a screwdriver and drain
out any gasoline that has built up inside. Once the fuel has drained, close
the drain back up with the same screwdriver. It is best to do this after
every use and required before storing the generator for long periods of
time. The location of the carburetor can be found in Fig. 12.
Carburetor
Fig. 12
SPECIFICATIONS
USB Charger
DC Output
5V, 1A (left) / 5V, 2.1A (right)
AC Output
Rated Wattage
Surge Wattage
Rated Voltage
Rated Amperage
Frequency
Phase
1000 Watts
1250 Watts
120V
8.3A
60 Hz
Single
Engine
Engine type
4 stroke, OHV, single cylinder with forced air cooling system
Spark plug gap
0.6 - 0.8 mm (0.024 - 0.031 in)
Spark plug torque
1/2 - 3/4 turn after gasket contacts base or 9.2 ft.lb
Displacement
60cc
Fuel tank capacity
0.69 gallons (2.6 L)
Oil capacity
0.27 quarts (310 mL)
Lubrication system
Splash lubrication
Run time on 50% load 5 hours
Spark plug
A5RTC
19
TROUBLESHOOTING
IMPORTANT: If trouble persists, please call our customer help line at (800) 232-1195 M-F 8-5 Central Time.
Problem
Cause
Solution
Engine switch is in the OFF position Set the engine switch to the CHOKE position
Engine will not
start.
Engine stops.
Blue smoke in
exhaust
Generator runs
but does not
support all connected electrical
devices.
Engine is filled with contaminated
or old fuel
Change the fuel in the tank and drain the carburetor
Not enough oil in crankcase
Add or replace oil
Air cleaner is dirty
Clean the air filter
Spark plug is broken/dirty
Replace/clean the spark plug
Generator is not on a level surface
Move the generator to a level surface to prevent low oil shutdown from triggering
Engine needs maintenance
Get a professional engine tune-up at an authorized small engine repair shop
Carburetor is air locked
Shut off the gas valve and remove the screw from the bottom of the carburetor to allow it to reset
Generator was tilted when adding
oil, or shipped upside down
Remove spark plugs, turn off engine switch (Fig. 4D), then pull recoil starter
four times to remove the oil from the combustion chamber
Pressure relief valve in OFF position
Turn pressure release valve to the ON position
Not enough oil in the crankcase
Add or change oil
Engine is out of fuel
Add fuel
Generator inclined, oil enters combustion chamber
Move generator to a level position
Too much oil was added to the
crankcase
Drain excess oil
Bad connecting wires/cables
If using an extension cord, try a different one.
Bad electrical device connected to
generator
Try connecting a different device
Generator is overloaded - overload
light is on
Perform these steps: 1) Turn off all electrical devices. 2) Unplug all devices.
3) Shut down the engine. 4) Wait several minutes and start the engine. 5)
Try connecting fewer electrical loads to the generator
Short in one of the connected
devices
Try disconnecting any faulty or short-circuited electrical loads
STORAGE & TRANSPORT
CAUTION: Never place any type of storage cover on the generator while it is still hot.
If the generator is being stored for short periods of time (30 to 60 days), add the proper mixture of fuel and fuel
stabailizer to the fuel tank until full. NOTE: Filling the tank reduces the amount of air in the tank and helps fight
deterioration of fuel. Run the engine for 5 minutes, allowing stabilized fuel mixture to circulate through the carburetor and the engine. When storing the generator for extended periods of time:
• Drain the fuel tank (see “Draining the Fuel Tank” in the “Maintenance” section).
• Change oil.
• Do not obstruct any ventilation openings.
• Keep the generator in a cool dry area.
When transporting generator:
• Drain the fuel tank if possible (see “Draining the Fuel Tank” in the “Maintenance” section).
• Keep the generator upright. Never place the generator side down or oil will leak into the combustion chamber.
20
EXPLODED VIEW AND PARTS LIST
Fig. 1 - Cylinder
No. Part Number
Description
Qty
1-1
56125-0101
Cylinder Head Cover Bolts 4
1-2
56125-0102
Cylinder Head Cover
1
1-3
56125-0103
Breather Gasket
1
1-4
56125-0104
Reed
1
1-5
56125-0105
Head Gasket
1
1-6
56125-0106
Spark Plug
1
1-7
56125-0107
Screw
4
Fig. 2 - Crankcase
No. Part Number
Description
2-1
56125-0201
Crankcase Subassembly
2-2
56125-0202
Stud
2-3
56125-0203
Stud
2-4
56125-0204
Crankcase Cover
2-5
56125-0205
Gear
2-6
56125-0206
Gear Shaft
2-7
56125-0207
Oil Sensor
2-8
56125-0208
Oil Sensor Bolts
2-9
56125-0209
Oil Plug
2-10
56125-0210
Cranckase Cover Bolts
2-11
56125-0211
Line
2-12
56125-0212
Clamp
2-13
56125-0213
Oil Seal
2-14
56125-0214
Pin
Fig. 3 - Piston Assembly
No. Part Number
Description
3-1
56125-0301
Crankshaft
3-2
56125-0302
Crankshaft Bearing
3-3
56125-0303
Connecting Rod
3-4
56125-0304
Piston Pin
3-5
56125-0305
Piston Pin Clips
3-6
56125-0306
Piston
3-7
56125-0307
Piston Rings
Qty
1
2
2
1
1
1
1
2
1
6
1
2
2
2
Qty
1
1
1
1
2
1
1
21
No.
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
Fig. 4 - Camshaft
Part Number
Description
56125-0401
Camshaft Gear
56125-0402
Camshaft Rod
56125-0403
Lower Rocker
56125-0404
Lower Rocker
56125-0405
Bushing
56125-0406
Valve Lifter
56125-0407
Valve Set
56125-0408
Valve Spring
56125-0409
Guide Seal
56125-0410
Valve Spring Seat
56125-0411
Shaft Rocker
56125-0412
Valve Rocker Arm
Qty
1
2
1
1
1
2
1
2
1
2
1
2
No. Part Number
5-1
56125-0501
5-2
56125-0502
5-3
56125-0503
5-4
56125-0504
5-5
56125-0505
5-6
56125-0506
5-7
56125-0507
5-8
56125-0508
5-9
56125-0509
No.
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
22
Fig. 5 - Recoil Starter
Description
Intake Tube
Collar
Shroud
Shourd Mounting Bolts
Recoil Assembly
Recoil Cover Bolts
Air Cleaner Element
Air Cleaner Cover
Clip
Qty
1
2
1
3
1
3
1
1
1
Fig. 6 - Carburetor
Part Number
Description
Qty
56125-0601
Carburetor Gasket
1
56125-0602
Carburetor Insulator Plate 1
56125-0603 Carburetor Insulator Gasket 1
56125-0604
Carburetor Assembly
1
56125-0605
Air Cleaner Gasket
1
56125-0606
Air Cleaner Intake Duct
1
56125-0607
Duct Mounting Nuts
2
56125-0608
Breather Tube
1
56125-0609
Cap
1
56125-0610
Fuel Filter
1
56125-0611
Clamp
2
56125-0612
Fuel Tube
1
Fig. 8 - Muffler Assembly
No. Part Number
Description
8-1
56125-0801
Muffler Shroud
8-2
56125-0802
Muffler Shroud
8-3
56125-0803
Collar
8-4
56125-0804
Shroud Bolts
8-5
56125-0805
Bolt
8-6
56125-0806
Nut
8-7
56125-0807
Exhaust Gasket
8-8
56125-0808
Muffler Assembly
8-9
56125-0809
Spark Arrestor
Fig. 7 - Fuel Tank
No. Part Number
Description
Qty
7-1
56125-0701
Gas Cap
1
7-2
56125-0702
Gas Tank Nozzle Sleeve
1
7-3
56125-0703
Gas Tank
1
7-4
56125-0704
Gas Tank Shock Absorber 2
7-5
56125-0705
Fuel Line
1
7-6
56125-0706
Fuel Filter
1
7-7
56125-0707
Clamp
1
7-8
56125-0708
Clamp
1
7-9
56125-0709
Filter Element
1
Fig. 9 - Flywheel
No. Part Number
Description
9-1
56125-0901
Flywheel
9-2
56125-0902
Flywheel Nut
9-3
56125-0903
Ignition Coil Bolts
9-4
56125-0904
Ignition Coil
Qty
1
1
3
4
1
2
1
1
1
Qty
1
1
2
1
23
Fig. 10 - Casing
Fig. 10 - Casing
No. Part Number
Description
Qty No. Part Number
10-1 56125-1001
Left Panel
1 10-16 56125-1016
10-2 56125-1002
Panel Screws
5 10-17 56125-1017
10-3 56125-1003
Right Panel
1 10-18 56125-1018
10-4 56125-1004
Panel Screws
5 10-19 56125-1019
10-5 56125-1005
Left Shell
1 10-20 56125-1020
10-6 56125-1006
Sheel Screws
6 10-21 56125-1021
10-7 56125-1007
Right Shell
1 10-22 56125-1022
10-8 56125-1008
Spark Plug Access Panel
1 10-23 56125-1023
10-9 56125-1009
Recoil Guide
1 10-24 56125-1024
10-10 56125-1010
Recoil Handle
1 10-25 56125-1025
10-11 56125-1011
Bolt
1 10-26 56125-1026
10-12 56125-1012
Muffler Cover
1 10-27 56125-1027
10-13 56125-1013
Muffler Cover Screws
4 10-31 56124-1031
10-14 56125-1014
Nut
8 10-32 56124-1032
10-15 56125-1015
Rubber Feet
4 10-33 56124-1033
No.
12-1
12-2
12-3
12-4
12-5
12-6
12-7
12-8
12-9
12-10
12-11
24
Description
Bolts for Feet
Fuel Cock
Fuel Cock Bolt
Clamp
Fuel Line
Clamp
Rubber Jacket
Rubber Jacket
Voltage Regulator
Bolt
Nut
Screw
Bolt
Lever
Nut
Qty
4
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Fig. 12 - Inverter Assembly
Part Number
Description
Qty
56125-1201
Inverter
1
56125-1202
Inverter Mounting Bracket 2
56125-1203
Mounting Bracket Bolts
4
56125-1204
Right Frame Cushion
2
56125-1205
Bolt
10
56125-1206
Left Frame Cushion
2
56125-1207
Left Cushion Bracket
1
56125-1208
Right Cushion Bracket
1
56125-1209
Bolt
2
56125-1210
Oil Sensor
1
56125-1211
Bolt
1
No.
11-1
11-2
11-3
11-4
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-14
11-15
11-16
Fig. 11 - Panel Assembly Fig. 11 - Panel Assembly Fig. 11 - Panel Assembly
Part Number
Description
Qty No. Part Number
Description
56125-1101
Status Display
1 11-17 56125-1117
Choke Line
56125-1102
LED Indicators
3 11-18 56125-1118
Screw
56125-1103
120V Socket Receptacles
1 11-19 56125-1119
Choke Knob
56125-1104
Idle Switch
1 11-20 56125-1120
Choke Control
56125-1105
DC Socket Assembly
1 11-21 56125-1121
Choke Lever
56125-1106
Parallel Socket
1 11-22 56125-1122
Choke Block
56125-1107
Parallel Socket
1 11-23 56125-1123
Steel Ball
56125-1108
Grounding Terminal
1 11-24 56125-1124
Choke Spring
56125-1110
Panel Screws
4 11-25 56125-1125
Fuel Cock Bracket
56125-1111
Control Panel Subassembly
1 11-26 56125-1126
Screw
56125-1112
Control Panel Wiring Harness 1 11-27 56125-1127
Fuel Valve
56125-1114
Front Panel Screws
4 11-28 56125-1128
Bolt
56125-1115
Front Panel
1 11-29 56125-1129
Screw
56125-1116
Screw
4
Fig. 13 - Rotor
No. Part Number
Description
13-1 56125-1301
Motor Shroud
13-2 56125-1302
Stator
13-3 56125-1303
Rotor
13-4 56125-1304
Impeller
13-5 56125-1305
Fan Cover
13-6 56125-1306
Fan Bolts
13-7 56125-1307
Stator Bolts
13-8 56125-1308
Shroud Bolt
13-9 56125-1309
Nut
13-10 56125-1310
Clamp
13-11 56125-1311
Screws
13-12 56125-1312
Rubber Cover
13-13 56125-1313
Screws
Qty
1
1
1
1
1
1
1
1
1
2
1
1
1
Qty
1
1
1
1
1
2
2
4
1
1
5
1
2
25
WIRING DIAGRAM
26
WARRANTY STATEMENT
Remember to save the receipt and to accurately fill out and mail the product registration card. Proof of purchase
is required for all warranty work.
WEN® generators are under warranty to be free from defects in materials and workmanship for a period of two
(2) years from date of original purchase. Generators used for Commercial or Rental use have a warranty period of
90 days from date of original purchase. Keep purchase receipt and mail in the product registration card for proof
of purchase.
WEN® will repair or replace, at its discretion, any part that is proven to be defective in materials or workmanship under normal use during the two (2) years warranty period. Warranty repairs or replacements will be made
without charge for parts or labor. Parts replaced during warranty repairs will be considered as part of the original
product and will have the same warranty period as the original product.
To exercise the warranty, DO NOT RETURN TO RETAILER. Instead, call the toll free Customer Service
number at (800) 232-1195 and you will be instructed on where to take the generator for warranty service. Take
the generator and proof of purchase (the receipt) to the repair facility recommended by the Customer Service
Representative. To make a claim under this Limited Warranty, you must make sure to keep a copy of your proof
of purchase that clearly defines the Date of Purchase (month and year) and the Place of Purchase. Place of purchase must be a direct vendor of Great Lakes Technologies, LLC. Third party vendors such as garage sales, pawn
shops, resale shops, or any other secondhand merchant void the warranty included with this product. Contact
techsupport@wenproducts.com or 1-800-232-1195 to make arrangements for repairs and transportation.
When returning a product for warranty service, the shipping charges must be prepaid by the purchaser. The product must be shipped in its original container (or an equivalent), properly packed to withstand the hazards of shipment. The product must be fully insured with a copy of the warranty card and/or the proof of purchase enclosed.
There must also be a description of the problem in order to help our repairs department diagnose and fix the
issue. Repairs will be made and the product will be returned and shipped back to the purchaser at no charge.
THIS LIMITED WARRANTY DOES NOT APPLY TO ACCESSORY ITEMS THAT WEAR OUT FROM
REGULAR USAGE OVER TIME INCLUDING BELTS, BRUSHES, BLADES, ETC.
The warranty does not extend to generators damaged or affected by fuel contamination, accidents, neglect, misuse, unauthorized alterations, use in an application for which the product was not designed and any other modifications or abuse.
WEN® is not liable for any indirect, incidental or consequential damages from the sale or use of this product.
Any implied warranties are limited to two (2) years as stated in this written limited warranty. Some states do not allow the exclusion or limitation of incidental or consequential damages. Some states do not allow limitation on the
length of an implied warranty. This warranty gives you specific legal rights, and you may have other rights that vary
from state to state.
27
THANKS FOR REMEMBERING