This manual provides information regarding the operation
and maintenance of these products. We have made every
effort to ensure the accuracy of the information in this
manual. We reserve the right to change this product at
any time without prior notice.
5800 Ontario Mills Pkwy
Ontario, CA 91764 USA
www.duromaxpower.com
Call our Customer Care Team Toll Free 8-5pm PST Mon-Fri
DuroMax has cemented its reputation as one of the markets leading power equipment companies
who are headquartered in the US. All of our products are manufactured to the strictest guidelines
and go through countless testing in all phases of production.
Evolving our strong engine line, DuroMax has complemented its oerings to include Pressure
Washers, Water Pumps, Engines and now oering V-Twin engines. Reliability is the highest
standard we hold ourselves to, whether its powering a heater during a winter storm that knocks
out power, dewatering a ooded property, or washing away a deck for the summer season
STOP
Please do not return
to store.
Duromax representatives are ready to help you
with any questions, concerns, or issues about your
new product. We can guide you through assembly,
start up, and how to operate your new generator.
We want you to be able to put your new generator
to use right away!
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RETURNING THE PRODUCT!
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1-844-DUROMAX
Notice Regarding Emissions
Engines that are certied to comply with U.S. EPA emission regulations for SORE (Small o Road
Equipment), are certied to operate on regular unleaded gasoline, and may include the following
emission control systems: (EM) Engine Modications and (TWC) Three-Way Catalyst (if so equipped).
6
Page 7
GENERAL SAFETY PROCEDURES
SAFETY ALERT SYMBOL
The safety alert symbol is used with one of the safety words (DANGER,
CAUTION, or WARNING) to alert you of hazards. Please pay attention to
these hazard notices both in this manual and on the generator.
Please familiarize yourself with the following safety symbols and words:
●DANGER: Indicates a hazard that will result in serious injury or death if instructions are not
followed.
●WARNING: Indicates a strong possibility of causing serious injury or death if instructions are not
followed.
●CAUTION: Indicates a possibility of personal injury or equipment damage if instructions are not
followed.
DANGER: This generator produces poisonous carbon monoxide gas when running. This
gas is both odorless and colorless. Even if you do not see or smell gas, carbon monoxide
may still be present. Breathing this poison can lead to headaches, dizziness, drowsiness,
and eventually death.
●Use outdoors ONLY in non-conned areas.
●Keep several feet of clearance on all sides to allow proper ventilation of the generator.
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 produces heat when running. Temperatures near exhaust can
exceed 150°F (65°C).
● Do not touch hot surfaces. Pay attention to warning labels on the generator denoting
hot parts of the machine.
●Allow generator to cool several minutes after use before touching engine or areas
which heat during use.
7
Page 8
GENERAL SAFETY PROCEDURES
WARNING: This generator may emit highly ammable and explosive gasoline vapors,
which can cause severe burns or even death. A nearby open ame can lead to an
explosion even if not directly in contact with gas.
●Do not operate near an open ame.
●Do not smoke near generator.
●Always operate on a rm, level surface.
●Always turn generator o before refueling.
●Allow generator to cool for at least 2 minutes before removing fuel cap. Loosen cap
slowly to relieve pressure in tank.
●Do not overll gas tank. Gas may expand during operation. Do not ll to the top of
the tank.
●Always check for spilled gas before operating.
●Empty the gasoline tank before storing or transporting the generator.
●Before transporting, turn fuel valve to the o position and disconnect the spark plug.
WARNING: This generator produces a powerful voltage, which can result in electrocution.
● ALWAYS ground the generator before using it (see the “Grounding the Generator”
portion of the “PREPARlNG THE GENERATOR FOR USE 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 qualied
electrician. Such connections must comply with local electrical laws and codes. Failure
to comply can create a backow of power, 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. GFCls are available in-line with some extension cords.
●Do not use uncovered in rainy or wet conditions.
●Do not touch bare wires or receptacles (outlets).
●Do not allow children or non-qualied persons to operate.
8
Page 9
GENERAL SAFETY PROCEDURES
In addition to the above safety notices, please familiarize yourself with the safety and
hazard markings on the generator.
9
Page 10
QUICK START GUIDE (GASOLINE)
1.
2.
3.
Remove shipping braces
The shipping braces prevent engine movement during
shipment. Flip the generator over and remove the brightly
colored brace between the motor and the frame, and the
wood brace under the generator.
Add oil
The oil ll cap is located on the lower engine block to the
right of the recoil start housing. Remove the oil ll cap and
ll with 10w30 oil.
Add gasoline
The fuel cap is located on top of the fuel tank. Fill the tank
with fresh unleaded gasoline 87 octane or higher. The tank
is full when you see fuel in the bottom of the fuel lter cup.
DO NOT overll the tank.
4.
5.
Turn breaker o
The breaker is located on the right side of the front power
panel. Flip the breaker down to prevent accidental load
when starting the generator.
Turn gas valve on
The gas valve is located above the recoil start on the
bottom of the fuel tank. Rotate the valve clockwise to the
vertical position to turn on the gas supply.
10
Page 11
6.
Close choke
The choke lever is located above the air lter to the right
of the recoil start. Slide the lever to the left to cut the air
supply and allow more gas into the engine to start.
7.
8.
9.
Start generator
The key switch is located on the left side of the front power
panel. Insert the key and turn to the start position to start
the generator. Allow the key to return to the run position
once started.
Open choke
The choke lever is located above the air lter to the right
of the recoil start. Slide the lever to the right to open the
choke and increase air into the carburetor for normal
running.
Turn breaker on
The breaker is located on the right side of the front power
panel. Flip the breaker up to allow power to ow to the
receptacles.
10.
Connect your devices to the receptacles on the front panel.
Start with the largest loads rst.
Connect devices
11
Page 12
QUICK START GUIDE (PROPANE)
1.
2.
3.
Remove shipping braces
The shipping braces prevent engine movement during
shipment. Flip the generator over and remove the brightly
colored brace between the motor and the frame, and the
wood brace under the generator.
Add oil
The oil ll cap is located on the lower engine block to the
right of the recoil start housing. Remove the oil ll cap and
ll with 10w30 oil.
Turn breaker o
The breaker is located on the right side of the front power
panel. Flip the breaker down to prevent accidental load
when starting the generator.
4.
5.
Turn gas valve o
The gas valve is located above the recoil start on the
bottom of the fuel tank. Rotate the valve counter clockwise
to the horizontal position to stop the ow of gasoline to
the carburetor.
Connect propane hose
The propane regulator / decompression valve is located
on the frame of the generator below the OHV valve cover.
Ensure the propane hose is securely connected to the
regulator/compression valve.
12
Page 13
6.
Connect propane tank
The propane hose is located on the left side of the regulator,
below the OHV valve cover. Screw the open ACME nut
connection to your propane tank and turn the tank on.
7.
8.
9.
Release propane pressure
The propane regulator / decompression valve is located
on the frame of the generator below the OHV valve cover.
Press the button in the center down 3-5 times for one
second to clear the air from the lines and ll the carburetor.
Adjust choke
The choke lever is located above the air lter to the right
of the recoil start. Slide the lever to the right to open the
choke and increase air into the carburetor for normal
running.
Start
The key switch is located on the left side of the front power
panel. Insert the key and turn to the start position to start
the generator. Allow the key to return to the run position
once started.
10.
The breaker is located on the right side of the front power
panel. Flip the breaker up to allow power to ow to the
receptacles. Connect your devices to the receptacles on
the front panel. Start with the largest loads rst.
Turn breaker on / connect
13
Page 14
GENERATOR COMPONENTS
2. Choke Lever
16. Fuel Valve
1. Air Filter
21. 120V 3 Prong
Twist Lock
8. 120v 3-Prong
Receptacle
22. 120/240v 4-Prong
Receptacle
23. Auto Throttle
5. Circuit Breaker
10. Volt Meter
1. Power Boost
7. Ground
Terminal
11. 12v DC
Charging Posts
6. 120/240v 4-Prong
Twist Lock
9. Battery
13. Engine Switch
14. Recoil Start
1. Air Cleaner - a removable, cleanable, oiled, element that cleans the air going into the engine.
2. Choke Lever - Allows the airow into the carburetor to be restricted to assist in starting the
engine.
3. Fuel Gauge - Indicates the amount of fuel in the gasoline tank.
4. Fuel Cap - Allows access to ll the gasoline tank.
5. Circuit Breaker - Resettable switch that protects the generator from electrical overload.
6. 120/240v 4-Prong Twist Lock - Use to connect electrical devices that run 120 or 240 Volt, 60Hz,
single phase, AC current (NEMA L14-30).
7. Ground Terminal - Connect a ground wire here to properly ground the generator.
8. 120v 3-Prong Receptacle - Use to connect electrical devices that run 120 Volt, 60 Hz, single
phase, AC current (NEMA 5-20).
9. Battery - 12V DC 7ah Battery that powers the Electric Start System.
12. Oil Fill and Dipstick
10. Volt Meter - Provides reading of voltage output.
11. 12v DC Charging Posts – DC Output for charging batteries or running small DC powered items.
14
Page 15
18. Muer
15. Fuel Filter Cup
3. Fuel Gauge
4. Fuel Cap
17. Spark Plug
20. Pressure
Release
Valve
19. Propane Connector
12. Oil Fill and Dipstick - Use to add or check the oil.
13. Engine Switch – 3 Position Switch to “Start”, “Run”, or turn “O” the generator.
14. Recoil Start – Easy Pull Recoil Start to start the engine without the electric start.
15. Fuel Filter Cup - Traps dirt and debris in gasoline before it enters the engine.
16. Fuel Valve - On/O Valve that allows fuel into the engine.
17. Spark plug – Provides ignition to the engine.
18. Muer – Reduces engine emissions and reduces noise.
19. Propane Tank Connector and Hose – Connects the LPG tank to the LPG Regulator.
20. Propane Regulator and Pressure Release Valve - Provides a regulated LPG Fuel supply to the
engine. (Intended for use with a LPG Source of 3 PSI or more.)
21. 120v 3-Prong Twist Lock - Use to connect electrical devices that run 120 Volt, 60 Hz, single
phase, AC current (L5-30).
22. 120/240v 4-Prong Receptacle - Use to connect electrical devices that run 120 or 240 Volt,
60Hz, single phase, AC current (NEMA 14-50).
23. Auto Throttle - Allows the engine to run at reduced speed when no load is present to save on
fuel and reduce noise levels.
15
Page 16
PACKAGE CONTENTS
Your generator comes with the items listed below. Please check to see that all of the following
items are included with your generator.
Double Sided
Screw Driver
Phillips and slot blade
screwdriver used for generator
maintenance.
Oil Funnel w/ hose
Spanner
Assorted wrenches used in
generator maintenance and
assembly. Commonly 8mm,
10mm, 13mm, and 15mm.
DC Charge Cables
Spark Plug Wrench
Used in spark plug
maintenance, inspection, and
installation.
Plug Ends
Used to add oil to the
generator without messy spills.
●Note: Actual tools may dier in appearance or design from image shown.
16
Used in conjunction with the
charging posts to charge 12v
automotive style batteries or
small DC appliances.
Plug heads for the receptacles
found on the generator are
included to make or rewire
your own cords.
Page 17
GENERATOR SETUP
Proper setup of your generator will get you going as soon as possible while making sure you and
your equipment are safe and cared for.
Page 18
GENERATOR SETUP
Step 1 - Remove Shipping Braces
Unpack
1.
a. Remove the generator from the box.
b. Place the largest piece of packing foam on a at surface.
c. Flip the generator upside down on the pad.
CAUTION: NEVER Attempt this if you have put fuel or oil
Remove braces
2.
a. Completely remove each of the 4 bolts holding the
orange metal brace in place.
in the generator.
b. Remove the brace.
c. Cut the nylon tie strap holding the wood brace in
place.
d. Grab the end of the second brace and pull it out.
e. This piece is no longer needed and can be discarded.
Note: Shipping braces can be thrown away.
They will not be needed again.
18
Page 19
Step 2 - Wheel Kit Installation (Optional)
Install support legs
1.
Secure the support legs to the frame with provided bolts and
lock nuts.
Install wheels
2.
a. Insert wheel bolt through frame and secure with
provided nut.
b. Slide one wheel over each axle end and secure with
the provided retaining pins.
Install Handles
3.
Attach the handles to the brackets on the frame using the
provided bolts and nuts.
Do not over tighten the handles, it will prevent
free movement.
19
Page 20
SAE
GENERATOR SETUP (CONTINUED)
Step 3 - Adding Oil
The generator requires engine oil to operate properly. The generator, when new from the package
contains no oil in the crankcase
generator for the rst time. This amount is equal to the oil capacity of the engine crankcase:
Engine Oil Capacity37 . oz (1.1L)
WARNING: Do not apply engine oils with additives or 2-stroke gasoline engine oils. They don’t
have enough lubrication, and may shorten the engine’s service life.
30
10W-30
*
. You must add the proper amount of oil before operating the
Model NumberXP10000EH
Engine oil recommended: SAE 10W-30. Viscosity varies with
regions and temperatures. Choose your oil viscosity using the
chart to the left.
5W-30
-20204060800100 F
-30-40-10010 20
-20
ENVIRONMENTAL TEMPERATURE
30
40 C
* A small amount of oil from factory testing may be present on
arrival.
Add oil
1.
a. Make sure the generator is on a level surface.
b. Unscrew the oil ller/dipstick cap from the engine .
c. Using a funnel, add the appropriate amount of oil
into the crankcase. You will know the crankcase is
full when the oil level has reached the lower lip of
the opening you have just poured the oil into.
d. Replace oil ller cap.
WARNING: DO NOT overll the crankcase. This
may damage the motor and shorting overall life
of your generator.
20
Page 21
Step 4 - Adding Gasoline
WARNING: Gasoline and gas fumes are highly ammable.
● Do not ll tank near an open ame.
● Do not overll. Always check for fuel spills.
To ensure that the generator runs smoothly use only FRESH, UNLEADED GAS WITH AN OCTANE
RATING OF 87 OR HIGHER.
Add Gasoline
2.
a. Make sure the generator is on a level surface.
b. Unscrew gas cap and set aside (NOTE: the gas cap
may be tight and hard to unscrew).
c. Slowly add unleaded gasoline to the fuel tank. Be
careful not to overll. Please refer to the chart below
to nd the gas capacity of your generator model. The
fuel gauge on the top of the gas tank indicates how
much gasoline is in the generator gas tank.
d. Replace fuel cap and wipe up any spilled gasoline
with a dry cloth.
NOTE: Gas can expand. Do not ll the gas tank
to the very top. Leave a minimum of 1.5 in of open
IMPORTANT:
●Never use an oil/gasoline mixture. Never use old gas.
●Avoid getting dirt or water in the fuel tank.
●Gas can age in the tank and make it hard to start up
the generator in the future.
●Never store generator for extended periods of time
with fuel in the tank.
space.
Model NumberXP10000EH
Gas Tank Capacity7.9 US Gallons (30L)
21
Page 22
GENERATOR SETUP (CONTINUED)
Step 5 - Grounding the Generator
Attach grounding wire
1.
a. Ground the generator by tightening the grounding
nut against a grounding wire.
b. Connect the other end to a copper or brass
grounding rod that’s driven into the earth.
A generally acceptable grounding wire is a No. 12 AWG
(American Wire Gauge) stranded copper wire.
Grounding codes can vary by location. Please contact a local
electrician to check the grounding regulations for your area.
WARNING: Failure to properly ground the generator can result in electrocution.
High Altitude Operation
At high altitude, the standard carburetor air/fuel mixture will be too rich. Performance will decrease, and
fuel consumption will increase. A very rich mixture will also foul the spark plug and cause hard starting.
Operation at an altitude that diers from that at which this engine was certied, for extended periods of
time, may increase emissions. High altitude performance can be improved by specic modications to the
carburetor. If you always operate your generator at altitudes above 5,000 feet (1,500 meters), have a dealer
perform this carburetor modication. This engine, when operated at high altitude with the carburetor
modications for high altitude use, will meet each emission standard throughout its useful life. Even with
carburetor modication, engine horsepower will decrease about 3.5% for each 1,000-foot (300-meter)
increase in altitude. The eect of altitude on horsepower will be greater than this if no carburetor
modication is made.
When the carburetor has been modied for high altitude operation, the air/fuel mixture will be too lean
for low altitude use. Operation at altitudes below 5,000 feet (1,500 meters) with a modied carburetor may
cause the engine to overheat and result in serious engine damage.
22
Page 23
STARTING THE GENERATOR
If this is not your rst time using the generator there are still steps you should take to prepare it for
operation each time you use it.
IMPORTANT: At this point you should be familiar with the procedures described in the rst
portion of this section entitled “GENERATOR SETUP” If you have not yet read this section, go
back and read it now.
23
Page 24
BEFORE YOU START YOUR GENERATOR
Step 1 - Check the oil
Check the oil
1.
The generator is equipped with an automatic shuto to
protect it from damage due to low oil. Nonetheless, you
should check the oil level of the engine before each use to
ensure that the engine crankcase has a sucient amount.
To check the oil level:
a. Make sure the generator is on a level surface.
b. Unscrew the oil ller/dipstick cap.
c. With a dry cloth, wipe the oil o of the stick on the inside of the cap.
d. Insert the dipstick as if you were replacing the
cap and then remove again. There should now be
oil on the stick. If there is no oil on the stick, or oil
only at the very end of the stick, you should add
oil until the engine crankcase is lled (see “Adding Oil” portion of the “Maintenance” section).
e. Be sure to replace the cap when nished checking
oil.
NOTE: The oil capacity for your generator can be found in
the “Specications” section of this manual.
24
Page 25
Step 2 - Check the gas level
Check Fuel Level
1.
Before starting the generator, check to see that there is
sucient gasoline in the fuel tank. The fuel gauge on top of
the tank will give a rough estimate of the gasoline level. The
gauge will appear white then ll red as the tank is lled.
Note: Fuel gauge may not register with less than 1/3 fuel
tank full.
WARNING: Gasoline and gasoline fumes are highly ammable.
● Do not ll tank near an open ame.
● Always allow engine to cool for several minutes before refueling.
1
●DO NOT overll fuel tank. Fuel expands when shaken or heated. ALWAY leave 1
space or more at the top of the tank.
●ALWAYS use fresh fuel or stabilized fuel. Old gasoline (older than 30 days) can cause
permanent damage to the fuel system.
●Always check for fuel spills.
/2“
25
Page 26
STARTING THE GENERATOR
Starting the Generator Using Gasoline
Shut breaker o
1.
The breaker is located on the right side of the front power
panel. Flip the breaker down to prevent accidental load
when starting the generator.
Turn gas valve on
2.
The gas valve is located above the recoil start on the bottom
of the fuel tank. Rotate the valve clockwise to the vertical
position to turn on the gas supply.
Close choke
3.
The choke lever is located above the air lter to the right
of the recoil start. Slide the lever to the left to cut the air
supply and allow more gas into the engine to start.
Turn engine switch to START
4.
The key switch is located on the left side of the front power
panel. Insert the key and turn to the start position to start
the generator. Allow the key to return to the run position
once started.
26
Page 27
Turn engine switch to ON
5.
When the engine starts, allow the engine switch to return to
the ON position.
Open choke
6.
Push the choke to the OPEN position as the engine warms up.
CAUTION: LPG must be shut o when using gasoline!
CAUTION: Gasoline must be shut o when using LPG!
CAUTION: Disconnect all electrical loads from the generator before attempting to
start!
WARNING: Operating the starter motor for more than 5 seconds can damage the
motor. If the engine fails to start, release the switch and wait 10 seconds before
operating the starter again.
27
Page 28
STARTING THE GENERATOR (CONTINUED)
Starting the Generator Using Propane
Turn breaker o
1.
The breaker is located on the right side of the front power
panel. Flip the breaker down to prevent accidental load
when starting the generator.
Turn gas valve o
2.
The gas valve is located above the recoil start on the
bottom of the fuel tank. Rotate the valve counter clockwise
to the horizontal position to stop the ow of gasoline to the
carburetor.
Connect propane hose
3.
The propane regulator / decompression valve is located
on the frame of the generator below the OHV valve cover.
Ensure the propane hose is securely connected to the
regulator/compression valve.
Connect propane tank
4.
There propane hose is located on the left side of the
regulator, below the OHV valve cover. Screw the open ACME
nut connection to your propane tank and turn the tank on.
28
Page 29
Release propane pressure
5.
The propane regulator / decompression valve is located on
the frame of the generator below the OHV valve cover. Press
the button in the center down 3-5 times for one second to
clear the air from the lines and ll the carburetor.
Adjust choke
6.
The choke lever is located above the air lter to the right of
the recoil start. Slide the lever to the right to open the choke
and increase air into the carburetor for normal running.
Start
7.
The key switch is located on the left side of the front power
panel. Insert the key and turn to the start position to start
the generator. Allow the key to return to the on position
once started.
Turn breaker on / connect
8.
The breaker is located on the right side of the front power
panel. Flip the breaker up to allow power to ow to the
receptacles. Connect your devices to the receptacles on the
front panel. Start with the largest loads rst.
29
Page 30
STARTING THE GENERATOR (CONTINUED)
Starting the Generator Using Propane
WARNING: WHEN USING THE GENERATOR WITH LPG, MAKE SURE THERE IS NO
POSSIBLE IGNITION SOURCE CLOSE TO THE GENERATOR.
1. Before using, make sure all of the LPG connectors and hoses are well connected and
sealed.
2. Connect electrical devices to generator ONLY after the engine runs smoothly.
(There may be remnant gasoline in the carburetor; this can cause unsteady engine
performance for several minutes)
3. If the propane gas leaks, shut o the LPG supply rst and then quickly unplug or turn
o any electrical devices powered by the unit.
4. When stopping the engine, unplug or turn o any electrical devices, turn o the Main
Circuit Breaker and then turn o the LPG Supply. After the engine has stopped turn
the KEY to ‘OFF” position.
30
Page 31
USING THE GENERATOR
If this is not your rst time using the generator there are still steps you should take to prepare it for
operation each time you use it.
IMPORTANT: At this point you should be familiar with the procedures described in the rst
portion of this section entitled “GENERATOR SETUP” If you have not yet read this section, go
back and read it now.
Page 32
USING THE GENERATOR
AC Usage
●You may connect electrical devices running on AC current according to their wattage
requirements.
●The chart below shows the rated and surge wattage of your generator according to its model
number.
●The rated wattage corresponds to the maximum wattage the generator can output on a
continuous basis.
●The surge wattage corresponds to the maximum amount of power the generator can output for
a short period of time. Many electrical devices such as refrigerators require short bursts of extra
power, in addition the rated wattage listed by the device, to stop and start their motors. The
surge wattage ability of the generator covers this extra power requirement.
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 wish to connect, nd the rated (or running) wattage of each device. This
number should be listed somewhere on the device or in its instruction manual.
If you cannot nd this wattage, you may calculate it by multiplying the Voltage requirement by the
Amperage drawn: Watts = Volts x Amps. If these specications are not available you may estimate
the Watts required by your device by using the chart on the next page.
Once you have found the rated wattage requirement of each electrical device, add these numbers
to nd the total rated wattage you wish to draw from the generator. If this number exceeds
the rated wattage of the generator, DO NOT connect all these devices. Select a combination of
electrical devices, which has a total rated wattage lower than or equal to the rated wattage of the
generator.
32
Page 33
Tool or ApplianceRated (Running) WattsAdditional Surge Watts
Electric water heater (40 gal)40000
Hot plate25000
Radial arm saw20002000
Electric Stove15000
Circular Saw15001500
Air compressor (1 HP)15003000
Window air conditioner12001800
Miter saw12001800
Microwave10002000
Well water pump10001500
Reciprocating saw9601040
Sump pump8001200
Refrigerator freezer8001200
Furnace blower8001300
Computer8000
Electric drill600900
Television5000
Deep freezer500800
Garage door opener480600
Stereo4000
Box fan300600
Clock radio3000
Security system1800
DVD Player1000
Common light bulb750
CAUTION - The generator can only run at its surge wattage capacity for a very short time.
Connect only 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.
NOTE: The above wattage gures are estimates only.
Try to check the wattage listed on your electrical devices before consulting this chart.
33
Page 34
USING THE GENERATOR (CONTINUED)
Connecting a load to the generator
NOTE: Be sure to attach devices to the correct receptacle (outlet).
●120v devices can be directly connected to the 120v ONLY receptacles.
●120v devices can be connected to the 120/240v receptacle using an appropriate adapter.
●240v devices can ONLY be connected the 240v receptacle.
CAUTION: Do not connect 50Hz or 3-phase loads to the generator.
Plug in devices
1.
Plug in devices to the appropriate receptacle. When using
the generator in 120/240v mode, balance the load as closely
as possible. Placing more load on one side of the circuit will
reduce the breaker trip period.
Turn breaker on
2.
Flip the circuit breaker up to the on position to allow power to
the receptacles.
Turn on connected devices
3.
Start or turn on appliances starting with the biggest loads
rst.
34
Page 35
Voltage Selector Switch
This generator features Power Boost Technology, which gives the user
the ability to double the power in the generator for more heavy duty
applications.
The voltage selector switches the dual 120v AC windings of the generator
to produce “120V ONLY” or “120/240V”. If a 240V appliance is connected
to the 4-prong receptacle, the switch must be in the “120/240V” position.
If only 120V appliances are being connected to the generator select the
“120V ONLY” position to double the 120v amperage and automatically balance the load.
WARNING - Only change the Voltage Selector Switch with the main AC Circuit Breaker
OFF. The generator can be seriously damaged if the Voltage Selector Switch is changed
with the breaker ON.
POWER BOOST
TECHNOLOGY
Choosing the right power cord
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 for the electrical device. See
table below for recommended cords based on the power requirement of the electrical device.
DEVICE REQUIREMENTSWIRE GAUGE BY LENGTH (ft.)
AMPSWATTS (120/240V)102550100150
5600/12001816141210
101200/2400161412108
151800/360014121086
202400/48001210864
253000/6000108644
303600/72008644NR
404800/9600644NRNR
506000/1200442NRNR
*NR = NOT RECOMMENDED
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USING THE GENERATOR (CONTINUED)
DC Usage
CAUTION: The DC receptacle is for recharging 12 Volt automotive-type batteries
only. Do not connect any other device to this receptacle.
CAUTION: Never try to jump start a car with your generator.
Connect the battery
1.
Connect one charging wire to the positive terminal on the
battery and the other charging wire to the negative terminal
on the battery.
Connect positive receptacle
2.
Connect the free end of the positive wire to the positive
receptacle (outlet) on the generator.
Start Generator
3.
The key switch is located on the left side of the front power
panel. Insert the key and turn to the start position to start
the generator. Allow the key to return to the run position
once started.
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Connect negative receptacle
4.
Carefully connect the free end of the negative wire to the
negative receptacle on the generator.
Disconnecting
5.
When disconnecting, always disconnect the wires from the
generator rst to avoid a spark.
DANGER - Stored batteries emit highly explosive hydrogen gas when charged.
Batteries also contain acid, which can cause severe chemical burns.
DANGER - Do not allow open ames or cigarettes nearby for several minutes after
charging a battery.
DANGER - Always wear protective goggles and rubber gloves when charging a
battery.
DANGER - If battery acid gets on your skin, ush with water. If battery acid gets in
your eyes, ush with water and call a physician immediately.
DANGER - If battery acid is swallowed, drink large quantities of milk and call a
Physician immediately.
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MAINTENANCE AND CARE
Proper maintenance and storage of your generator is essential to ensure trouble free use of your
generator when you need it.
By following the maintenance and care requirements, you can keep your generator running
smooth and ecient for years to come.
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MAINTENANCE AND CARE
Proper routine maintenance of your generator is essential for safe, economical, and trouble-free
operation. It will also help reduce air pollution.
WARNING: Improper maintenance, or failure to correct a problem before operation, can
cause a malfunction in which you can be seriously injured or killed. Always follow the
inspection and maintenance recommendations and schedules in this instruction manual.
●Make sure the engine is o before you begin any maintenance or repairs.
●Let the engine and exhaust system cool before touching.
●To reduce the possibility of re or explosion, be careful when working around
gasoline. Use only a nonammable solvent, not gasoline, to clean parts. Keep
cigarettes, sparks, and ames away from all fuel related parts.
Maintenance Schedule
Remember that this schedule is based on the assumption that your machine will be used for its
designed purpose. Sustained high-load, high temperature operation, or use in unusually wet or
dusty conditions, will require more frequent service.
REGULAR SERVICE PERIOD
SERVICE
BEFORE
EACH USE
EVERY MO. OR
20 HRS
EVERY 3 MO. OR
50 HRS
EVERY 6 MO. OR
100 HRS
EVERY 12 MO.
OR 300 HRS
ENGINE OILCHECK
CHANGE
AIR CLEANERCHECK
CHANGE
SEDIMENT CUPCLEAN
SPARK PLUGCLEAN-
ADJUST
REPLACE
SPARK ARRESTORCLEAN
IDLE SPEEDCHECK /
ADJUST
VALVE CLEARANCECHECK-
ADJUST
COMBUSTION
CHAMBER
CLEAN
500 HOURS
FUEL TANK / FILTERCLEAN
FUEL TUBECHECKEVERY 24 MO. (REPLACE IF NECESSARY)
TO BE PERFORMED AT EVERY MONTH INDICATED OR HOUR INTERVAL WHICH EVER COMES FIRST
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MAINTENANCE LOG
DateGenerator HoursMaintenance Performed
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MAINTENANCE AND CARE (CONTINUED)
Checking the oil
Check the oil
1.
The generator is equipped with an automatic shuto to
protect it from damage due to low oil. Nonetheless, you
should check the oil level of the engine before each use to
ensure that the engine crankcase has a sucient amount.
To check the oil level:
a. Make sure the generator is on a level surface.
b. Unscrew the oil ller/dipstick cap.
c. With a dry cloth, wipe the oil o of the stick on the inside of the cap.
d. Insert the dipstick as if you were replacing the
cap and then remove again. There should now be
oil on the stick. If there is no oil on the stick, or oil
only at the very end of the stick, you should add
oil until the engine crankcase is lled (see “Adding Oil” portion of the “Maintenance” section).
e. Be sure to replace the cap when nished checking
oil.
NOTE: The oil capacity for your generator can be found in
the “Specications” section of this manual.
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Changing the oil
Worn out or dirty oil does not cool the generator properly and can lead to catastrophic engine
damage.
In addition to regular oil changes, it is necessary to drain the oil from the crankcase if it has
become contaminated with water or dirt.
Remove drain plug
2.
Using a 10 mm hex wrench, unscrew the oil drain plug, which
is located on the crankcase underneath the oil ller/dipstick
cap.
Allow all the oil to drain from the generator.
Drain oil
2.
Drain oil into an approved oil disposal container. Contact
your local auto parts store for information on oil disposal.
Replace drain plug
3.
Replace the oil drain plug and tighten with a 10 mm hex
wrench.
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MAINTENANCE AND CARE (CONTINUED)
Cleaning the air lter
Routine maintenance of the air cleaner helps maintain proper airow to the carburetor. Check
that the air cleaner is free of excessive dirt after every use.
Note: Improper maintenance may cause less air to enter the engine or dirty air to enter the
engine causing overheating and engine wear.
Open lter cover
1.
Unhinge the clasps at the top and bottom of the air cleaner
cover.
Remove lter element
2.
Remove the sponge-like elements from the casing.
Wipe out lter casing
3.
Wipe the dirt from inside the empty air cleaner casing.
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Wash lter element
4.
Wash the sponge-like elements in household dish detergent
and warm water.
Dry lter element
5.
Allow the elements to dry completely.
Add engine oil to elements
6.
Soak the dry elements in a small amount of engine oil. Ring
out any excess oil.
Replace elements in casing
7.
Replace the sponge-like elements in the air cleaner casing and
replace the cover.
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MAINTENANCE AND CARE (CONTINUED)
Spark Plug Maintenance
The spark plug is important for proper engine operation. A good spark plug should be intact,
free of deposits, and properly gapped.
Improper maintenance may cause reduced fuel economy, misres, trouble starting, or damage
to the spark plug threads.
Remove spark plug cap
1.
Pull on the spark plug cap to remove it.
Remove spark plug
2.
Unscrew the spark plug from the generator using the spark
plug wrench included with this product.
Inspect spark plug
3.
Visually inspect the spark plug. If it is cracked or chipped,
discard and replace with a new spark plug. We recommend
using a F6RTC spark plug such as NGK BPR5ES.
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Measure plug gap
4.
Measure the plug gap with a gauge. The gap should be 0.7-0.8
mm (0.028-0.031 in).
Clean and re-gap
5.
If you are re-using the spark plug, use a wire brush to clean
any dirt from around the spark plug base and then re-gap the
spark plug.
Replace spark plug
6.
Screw the spark plug back into its place on the generator
using the spark plug wrench.
Replace spark plug cap
7.
Replace the spark plug cap.
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MAINTENANCE AND CARE (CONTINUED)
Emptying the Gas Tank
Before storing your generator for extended periods of time, you should drain your generator of
gasoline.
CAUTION: Do not store fuel from one season to another. Gasoline sold at the pump
today contains additives such as ethanol that even when stored properly may
damage the fuel system components.
Shut fuel valve o
1.
Turn the fuel valve to the “OFF” position.
Remove fuel lter cup
2.
Remove the fuel lter cup (see “Removing the Fuel Filter Cup”
earlier in this section.
Empty fuel lter cup
3.
Empty the fuel lter cup of any fuel.
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Drain gas from generator
4.
With a receptacle underneath the generator to catch the gas,
turn the fuel valve to the “ON” position. Drain all the gas from
the generator.
Shut fuel valve o
5.
Turn the fuel valve to the “OFF” position.
Replace fuel lter cup
6.
Reinstall the fuel lter cup.
Store emptied gas
7.
Store the emptied gasoline in a suitable place and add fuel
stabilizer to keep fuel fresh and usable.
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MAINTENANCE AND CARE (CONTINUED)
Cleaning the fuel lter cup
Shut fuel valve o
1.
Turn the fuel valve to the “OFF” position.
Remove fuel lter cup
2.
Unscrew the fuel lter cup from the fuel valve using a wrench.
Turn the valve towards you to unscrew
Clean lter cup
3.
Clean the cup of all sediment using a rag or brush.
Replace fuel lter cup
4.
Reinstall the fuel lter cup.
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Storage and Transportation
CAUTION: Never place any type of storage cover on the generator while it is still
hot.
When transporting your generator:
●Empty the gas tank (see “Emptying the Gas Tank” in the “Maintenance” section).
●Disconnect the spark plug.
●Do not obstruct any ventilation openings & keep the generator in a cool dry area.
Storage PeriodStorage Preparation
1. Turn o the main breaker.
If you plan on starting
the same day.
2. Allow the unit to run 3 - 5 minutes.
3. Turn o the key.
4. Store.
If you plan on starting
the unit again within
30 days.
If you do not plan to
start the unit for
longer than 30 days.
1. Turn o the main breaker.
2. Allow the unit to run 3 - 5 minutes.
3. Turn o the fuel valve.
4. Allow the unit to stall out.
5. Turn o the key.
6. Add fuel stabilizer to the gas remaining in the tank.
7. Store.
1. Turn o the main breaker.
2. Allow the unit to run 3 - 5 minutes.
3. Turn o the fuel valve.
4. Allow the unit to stall out.
5. Turn o the key.
6. Drain the fuel tank (See “Emptying the Gas Tank” in the “Maintenance” section)
7. Drain the carburetor
a. Remove the drain bolt from the carburetor.
b. Drain the small amount of remaining fuel from the carburetor bowl.
8. Oil the cylinder
a. Remove the spark plug.
b. Put 2 tbsp. of 10w30 motor oil directly into the spark plug hole
c. Pull the recoil start one time.
d. Replace the plug.
9. Remove the battery and place on tender indoors.
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SPECIFICATIONS
AC Rated Wattage (Gasoline)8000W
AC Rated Wattage (Propane)6800W
AC Surge Wattage (Gasoline)10000W
AC Surge Wattage (Propane)8500W
AC Rated Voltage120/240V
AC Rated Frequency60 Hz
AC PhaseSingle
DC Voltage12V
DC Amperage8.3A
DimensionsLENGTH28in.
WIDTH22in.
HEIGHT23in.
Engine Type4-Stroke OHV Forced-Air
Ignition SystemNon-Contact Transistor
Displacement420cc
Starting TypeElectric
Fuel Tank Capacity7.9 US Gal. (30L)
Oil Capacity37 . oz. (1.1L)
Run Time @ 50% (Gasoline)10 hr.
Run Time @ 50% (Propane)5 hr. (5 Gallon)
Noise Level<74db
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TROUBLESHOOTING
This section of the manual is to help you troubleshoot problems with your generator.
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TROUBLESHOOTING
ModeDescription
Engine Switch is “O”Set engine switch to “run”
Fuel Valve is “Closed”Turn fuel valve to “open”
Choke is openClose the choke
Engine is out of fuelAdd fuel
Engine will not start
Engine runs, but there
is no electrical output
Generator runs, but
does not support all
electrical devices
connected
Fuel is old or contaminatedChange fuel
Spark Plug is dirtyClean spark plug
Spark Plug is brokenReplace spark plug
Generator is not level
Oil is lowAdd / change oil
Circuit breaker is “O”Turn “on” circuit breaker
Wiring connection is badReplace extension cord(s)
Device connected to generator
is malfunctioning
Generator is overloaded
Device connected to generator
is bad
Air Cleaner is dirtyClean / replace the air lter
Move generator to a level
surface
Disconnect malfunctioning
device
Disconnect 1 or more items to
reduce the load
Disconnect malfunctioning
device
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Changing / Inspecting the Carbon Brushes
The carbon brushes in conjunction with the AVR regulates power from the generator. The
carbon brushes are wearable parts and should be inspected every 250 running hours.
Remove generator cover
1.
Remove the 2 bolts of the generator cover then pull the cover
o the generator.
Remove bolt from brush
2.
Remove the bolt holding the carbon brush.
Disconnect AVR wires
3.
Remove the two wires from the AVR on the carbon brush
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TROUBLESHOOTING (CONTINUED)
Changing / Inspecting the Carbon Brushes (Cont.)
Install new brush
4.
Install new carbon brush with bolt.
Connect AVR wires
5.
Insert and connect the 2 wires from the AVR, be sure to connect
+ and – correctly.
Replace generator cover
6.
Replace the back cover of the generator and secure with the
2 bolts.
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Changing / Inspecting the AVR
The carbon brushes in conjunction with the AVR regulates power from the generator. If the
generator is overheated or overloaded, the AVR may be damaged and require replacement.
Remove generator cover
1.
Remove the 2 bolts of the generator cover then pull the cover
o the generator.
Remove AVR bolts
2.
Remove the 2 bolts holding the AVR.
Disconnect AVR wire clip
3.
Disconnect the wire clip.
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TROUBLESHOOTING (CONTINUED)
Changing / Inspecting the AVR (Continued)
Disconnect wires from brush
4.
Remove the 2 wires from the AVR on the carbon brush.
Install new AVR
5.
Install the new AVR with the 2 bolts.
Reconnect wires to brush
6.
Reconnect the wire clip.
Reconnect the AVR wire clip
7.
Insert and connect the 2 wires from the AVR, be sure to
connect + and – correctly.
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Replace generator cover
8.
Replace the back cover of the generator and secure with the
2 bolts.
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WIRING DIAGRAM
60
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WARRANTY
3-year Warranty
All DuroMax/DuroStar Power Equipment warrant the original purchasers to a 3-year Parts Warranty
(Residential Use ONLY: Unusually heavy or commercial use is covered for a period of 1-year) in
the event of failure due to defects in electrical or mechanical components. Freight on any items
submitted for replacement or repair under the Warranty are the responsibility of the equipment
owner. This warranty is non-transferable and only valid to the original purchaser.
Warranty Exclusions
The DuroMax/DuroStar Power Equipment warranty does not cover repairs or returns when
the fault is: Normal Wear and Tear, Installation Use or Maintenance Services, Cosmetic defects,
Accessories, Failures due to acts of God or Natural Disasters, or problems related to/from
aftermarket or non-OEM parts.
Warranty Limitations
DuroMax/DuroStar Power Equipment does not claim or hold any obligation to loss of time, freight
charges, use of product, or any incidental damages from the use of this product. THIS WARRANTY
IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED.
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CUSTOMER SERVICE
Duromax Power Equipment is comitted to ensuring that our products perform when they need
to. Our generators are your lifeline in the event of an emergency. Should you have any problems,
please contact our customer service department:
DUROMAX POWER EQUIPMENT
5800 Ontario Mills Parkway
Ontario, CA 91764
Customer Service: 844-DUROMAX
Customer Service Hours: 8-5pm PST
Website: www.duromaxpower.com
Email: customer_service@duromaxpower.com
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Page 66
5800 Ontario Mills Parkway
Ontario, CA 91764
United States
844-DUROMAX
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