MMD Equipment PowerPro IGR6000H User manual

Owners Manual
IGR6000H
Inverter Generators
PowerPro
MMD Equipment
4175 Guardian Street • Simi Valley, CA 93063
602 Dunton St. • San Antonio, TX 78226
2075 High Hill Road • Logan Township, NJ 08085
www.mmdequipment.com
Phone: [phone]
Fax: [phone]

MMD PowerPro Inverter Generators • IGR6000H (091615) MMD PowerPro Inverter Generators • IGR6000H (091615)
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Table of Contents Introduction
Thank you for purchasing an MMD PowerPro Inverter Generator! We are happy that
you have chosen our product for all your portable energy needs.
This user manual covers the IGR6000H generator with EPA and California Air
Resources (CARB) certification if do designated.
We strive to provide the best products, and in those efforts, we are constantly
making improvements. The information in this manual is based on the most recent
information available at time of print. You can always find the latest information, parts,
and accessories on our website.
We recommend reading this manual thoroughly before use to prevent any damage
to the product or personal injury.
This manual should always be kept with the generator and should remain with
generator if resold.
Reference
For your reference, please record the model, serial number (see page 9), sales
representative, and date of purchase.
Model: ____________________________________________________________
Serial: ____________________________________________________________
Sales Representative and date of purchase:_______________________________
Our generators are designed to provide
safe and dependable service if operated
according to instructions. Read and
understand the Owner's Manual before
operating the generator. Failure to do
so could result in personal injury or
equipment damage.
If a problem should arise, or if
you have any questions about the
generator, consult an authorized sales
representative, or MMD Equipment at:
mmdequipment.com/tech-support.html
Introduction ..............................................................................................3
1. Safety Instructions ...................................................................................5
2. Component Locations .............................................................................. 7
3. Pre-Operation Check .............................................................................10
4. Starting The Engine ............................................................................... 14
5. Generator Use ....................................................................................... 17
6. Stopping The Engine .............................................................................26
7. Maintenance .......................................................................................... 27
8. Transporting and Storage ......................................................................34
9. Wheel Kit ...............................................................................................36
10. Troubleshooting...................................................................................... 37
11. Specifications .........................................................................................38
12. Warranty.................................................................................................39
13. Emission Control System.......................................................................40
Scan for MMD
technical support

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Failure to properly follow these precautions
can result in property damage, serious injury or
DE ATH !
Read all labels and the owner's manual before
operating this generator.
Generators produce carbon monoxide, a
poisonous, colorless, odorless gas that can cause
death or serious injury.
Indoor use of a generator CAN KILL QUICKLY.
Generators should be used outdoors only.
Generators should be used outdoors only and
away from garages and open windows and
protected from rain and snow.
Check for spilled fuel or leaks. Clean and/or repair
before use.
Always stop engine before refueling. Wait 5
minutes before restarting.
Keep any source of ignition away from fuel tank at
all times.
The portable generator is not meant to be used as
a permanent back-up power system for the home.
Indicates a strong possibility of severe personal
injury or death if instructions are not followed.
Indicates a possibility of personal injury or
equipment damage if instructions are not followed.
Provides helpful information.
1. Safety Instructions
This generator is designed to provide safe and
dependable service if operated according to
instructions.
nRead and understand the Owner’s Manual before
operating the generator. Failure to do so could result in
personal injury or equipment damage.
Exhaust gas contains poisonous carbon monoxide.
Never run the generator in an enclosed area.
nBe sure to provide adequate ventilation.
Gasoline is extremely flammable and explosive under
certain conditions.
nAlways refuel in a well ventilated area with the engine
stopped.
nKeep away from smoking materials, sparks, and other
sources of combustion when refueling the generator.
nClean up spilled gasoline immediately.
nRestrict operation of generator in high-risk fire causing
areas.
Do not touch muffler while it is hot.
nThe muffler becomes very hot during operation and remains
hot for several minutes after stopping the engine.
Let the engine cool before storing the generator
indoors.
nThe engine exhaust system will be heated during operation
and remain hot immediately after stopping the engine.
nPay attention to the warning marks attached to the
generator to prevent burns or serious injury.

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Connections for standby power to a building's electrical
system must be made by a qualified electrician and must
comply with all applicable laws and electrical codes.
Improper connections can allow electrical current from the
generator to back feed into the utility lines. Such back feed
may electrocute utility company workers or others who
contact the lines during a power outage, and when utility
power is restored, the generator may explode, burn, or
cause fires in the building's electrical system. This generator
is not designed to be connected to an automatic transfer
switch. Serious damage to the engine and inverter module
may result.
2. Component Locations
Read the labels and safety notes and precautions on the generator.
If a label comes off or becomes hard to read, contact your sales representative for a
replacement.
CARBON CANISTER
CONTROL
PANEL
AIR
INTAKE
AIR
EXHAUST
HIGH
TEMPERATURE
LABEL
FUEL LEVEL INDICATOR
FUEL FILLER CAP
AIR FILTER
SPARK PLUG
OIL CAP
SERVICE
DOOR
nAlways perform a pre-operation inspection before
starting the engine to prevent equipment damage or
accident.
nPlace the generator at least three feet (one meter) away
from buildings, or other equipment during operation.
nOperate the generator on a level surface to prevent fuel
spillage and/or oil starvation.
nKnow how to stop the generator quickly and understand
operation of all controls. Never permit anyone to operate
the generator without proper instructions.
nKeep children and pets away from the generator while in
operation.
nKeep away from rotating parts while the generator is
running.
nThe generator is a potential source of electrical shock
when misused; do not operate with wet hands.
nDo not operate the generator in rain, snow, or anywhere
it is exposed to moisture.
nNever operate the generator with the door open or any
panels removed. Do not operate in any enclosure such
as an RV compartment.

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Control Panel — IGR6000H
OVERLOAD PROTECTOR
OUTPUT INDICATOR LIGHT
OVERLOAD INDICATOR LIGHT
LOW OIL ALARM INDICATOR LIGHT
VOLTAGE
SELECTION
SWITCH
HOUR METER
AC RECEPTACLES
CHOKE KNOB
SMART
THROTTLE
SWITCH
Serial Number Identification and Location
The engine serial number is stamped on the engine block to the left of the oil drain
plug. In most cases the battery will have to be removed to view it clearly. Refer to
this number when ordering parts or making technical inquiries. In most cases the
battery will have to be removed to view it clearly.
MODEL NUMBER
SERIAL NUMBER
ENGINE SERIAL
NUMBER
GROUND TERMINAL
FUEL SWITCH
ENGINE
SWITCH

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3. Pre-Operation Check
Be sure to check the generator on a level surface with the
engine stopped. Under no circumstances can this generator
be used in an enclosed compartment.
Running the engine with insufficient oil can cause
serious engine damage.
1. Check the engine oil level.
a. Open left maintenance cover and wipe the oil level
indicator with a clean rag.
b. Check the oil level by inserting the oil level indicator in
the filler hole, tighten, and unscrew it out.
c. If the oil level is below the end of the oil level indicator,
refill the recommended oil up to the top of the oil filler
neck.
The Low Oil Alarm System will automatically stop the engine
before the oil level falls below the safe limit. However, to
avoid the an unexpected shutdown, it is recommended to
inspect the oil level and refill regularly.
OIL LEVEL
INDICATOR
OIL DRAIN BOLT
2. Check the fuel level.
a. Fuel tank capacity is 5.9 gal. (22L).
b. Use automotive unleaded 87-octane gasoline only. Do not use premium or high
octane fuels. Engine is designed to run on regular gasoline. Engine damage and/
or poor performance may result. If the fuel level is low, refill to the shoulder of the
fuel strainer.
c. After refueling, tighten the fuel filler cap securely.
d. Never use an oil/gasoline mixture or dirty gasoline. Avoid getting dirt, dust or
water in the fuel tank.
e. A fuel preservative and stabilizer should be added to any container of stored fuel.
Using non detergent oil or 2 cycle engine oil could
shorten the engine’s service life.
nUse a high-detergent,
premium quality 4-stroke
engine oil, certified to
meet or exceed U.S.
automobile manufacturer's
requirements for API
Service Classification SG/
S F.
n Select the appropriate
viscosity for the average
temperature in your area.
SAE Viscosity Grades
Ambient Temperature
FUEL SURFACE STRAINER
LOOSEN
TIGHTENFUEL
FILLER CAP
Upper limit
Lower limit

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nGasoline is extremely flammable and is explosive under certain conditions.
nRefuel in a well-ventilated area with the engine stopped. Keep all possible
ignition materials, sparks, and any other source of combustion away from the
generator during refueling.
nDo not overfill the fuel tank (there should be no fuel above the upper limit mark).
After refueling, make sure the tank cap is closed properly and securely.
nBe careful not to spill fuel when refueling. Make sure the area is dry before
starting the engine. Spilled fuel or fuel vapor may ignite.
nAvoid repeated or prolonged contact with skin or breathing of vapor. KEEP OUT
OF REACH OF CHILDREN.
Gasoline containing alternate fuels
If you decide to use a gasoline containing ethanol, be sure its octane rating is
no lower than the specification. Do not use a blend that contains more than 10%
ethanol. Do not use gasoline containing methanol.
nFuel system damage or engine performance problems resulting from the use of
fuels that contain an improper alcohol blend are not covered under warranty.
nBefore buying fuel from an unfamiliar station, determine if the fuel contains
ethanol and if it does, confirm the type and percentage of ethanol used.
nReplace fuel with proper blend if you experience any undesirable operating
symptoms while using a gasoline that contains ethanol, or one that you think
contains ethanol.
3. Check the air cleaner.
a. Check the air cleaner element to be sure it is clean and in good condition.
b. Open the left side maintenance cover.
c. Remove the air cleaner cover, remove the paper components from the air cleaner
cover, and check air cleaner components.
d. If the paper element is dirty or torn, replace it with a new one. Do not attempt to
clean the element.
nNever run the engine without the air cleaner. Rapid engine wear will result from
contaminants, such as dust and dirt, being drawn through the carburetor, into
the engine.
AIR CLEANER BASE
AIR CLEANER ELEMENT
AIR CLEANER COVER

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4. Starting The Engine
b. Pull the choke knob out to the CLOSED position
Do not use the choke if the engine is already warm or the ambient air
temperature is high.
CHOKE KNOB
FUEL SWITCH
nWhen starting the generator after adding fuel for the first time or after long term
storage, or after running out of fuel, turn the fuel valve lever to the "ON" position,
then wait for 10 to 20 seconds before starting the engine.
4. Starting Procedure
a. Turn the fuel valve lever to the ON position.
Disconnect any load from AC receptacle before starting engine.
ENGINE SWITCH
ON
ON
OFF
OFF
START
START
ENGINE SWITCH
c. Insert the engine key and turn the engine switch to ON position.
d. Turn the engine switch to the START until the engine has started.Do not operate
the starter for more than 10 seconds.

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e. Push the choke knob in to the OPEN position as the engine warms up.
CHOKE KNOB
nDo not operate the generator when the ambient temperature is below -20° F
(-29°)
nDo not operate the generator when the ambient temperature is above 113° F
(45° C)
5. Generator Use
Warnings and cautions
nTo prevent electrical shock from faulty appliances, the generator should be
grounded. Connect a length of heavy cable between the generator's ground
terminal and an external ground source.
nConnections for standby power to a building's electrical system must be made
by a qualified electrician and must comply with all applicable laws and electrical
codes. Improper connections can allow electrical current from the generator to
back feed into the utility lines. Such back feed may electrocute utility company
workers or others who contact the lines during a power outage. When utility
power is restored the generator may explode, burn, or cause fires in the
building's electrical system.
nDo not connect the generator to an automatic transfer device. Severe damage to
the inverter module may result.
GROUND TERMINAL
nThe total wattage of all appliances connected must be considered.
nLimit operation requiring maximum power to 30 minutes. For continuous
operation do not exceed the rated power of 2800 watts or 23.3 amps.
nDo not exceed the current limit specified for any one receptacle.
nDo not connect the generator to a household circuit. This could cause the
damage to the generator or to electrical appliances in the house.
nDo not modify or use the generator for other purpose than it is intended for.
nDo not attempt to connect generators in parallel.
nDo not connect an extension to exhaust pipe.
nWhen an extension cable is required, make sure you use the proper size and
length.
n16 Gauge Cords- Any 16 gauge cord between 0-100 feet (0-30.5 meters) long
will adequately handle tool and appliance loads up to 10 amps

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n14 Gauge Cords- a 14 gauge cord between 0-50 feet (0-15.2 meters) long will
adequately handle loads between 10 and 15 amps.
n12 Gauge Cords- If your load is between 10 and 15 amps and the length of the
cord is 50-100 feet (15.2-30.5 meters), you need a 12 gauge cord to safely power
any tool.
nThe DC receptacle can be used while the AC power is in use. If both are being
used at the same time, be sure not to exceed the total power for AC and DC.
nMost appliance motors require more than their rated wattage for start-up.
nKeep the generator away from other electric cables or wires such as commercial
power supply lines.
AC Power Application
The generator has the capability to provide 120V and 240V AC Power. It can do
so simultaneously depending on the needs of the user. However, it is important to
understand the receptacles, their current limitations, and how to distribute power
efficiently.
VOLTAGE
SELECTION SWITCH
120V 20A GFCI
RECEPTACLE
120/240V 30A
RECEPTACLE
The GFCI (ground fault circuit interrupter) shuts off power to the protected
receptacles if a ground fault or current imbalance between two conductors is
detected. If the reset button pops out, the appliance connected to the receptacle
may be defective. If the appliance appears to be in good condition, press the reset
button until a click is heard. This will restore power. If the reset button pops out
again, disconnect all appliances disconnected immediately and have them inspected
by a qualified electrician before attempting to use them again.
nSubstantial overloading that continuously lights
the overload indicator light (red) may damage the
generator. Marginal overloading that temporarily
lights the overload indicator light (red) may shorten
the service life of the generator.
nBe sure that all appliances are in good working order before connecting them to
the generator. If an appliance begins to operate abnormally, becomes sluggish,
or stops suddenly, turn off the generator engine switch immediately. Disconnect
the appliance and examine it for signs of malfunction.
AC operation
1. Start the engine and make sure only the output indicator light
(green) comes on.
2. Confirm that the appliance to be used is switched off, and
plug in the appliance.
nThe L14-30 receptacle is rated at 30 amps. Should the
current be exceeded, the circuit protection device will activate
and cut all current to the receptacle. This will be indicated
by the push button popping out. Reduce the load to the
receptacle and reset the circuit protector by pushing in the button.
nDo not attempt to operate appliances if the ground fault circuit interrupter reset
button pops out repeatedly during use.
nOnly the ground fault circuit interrupter receptacle provides ground fault
protection.
Voltage Selection Switch
The voltage selection switch has two positions: AC120V and AC120/240V.
1. When the voltage selection switch is in the 120/240V position, the generator
supplies both 120V and 240V AC power. If you operate the generator with
the switch in this position, the electric current is limited to 15 amps to the
120V receptacles although it can provide 15 amps at 240V from the 120/240V
receptacle.
2. When the voltage selection switch in the 120V position, the generator supplies
120V AC only. It can supply a full 30 amps to the 30 amp receptacle or 20 amps
to the GFCI receptacle. Total current is limited to 45.8 amps at rated load.

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Output and Overload Indicators
The output indicator light (green) will remain on during
normal operating conditions.
If the generator is overloaded or if there is a short in the
connected appliance, the output indicator light (green)
will go out, the overload indicator light (red) will illuminate
and current to the connected appliance will be shut off.
Stop the engine if the overload indicator light (red) comes
on and investigate the overload source
nBefore connecting an appliance to the generator, check that it is in good order
and that its electrical rating does not exceed that of the generator. Connect the
power cord of the appliance and start the engine. See page 18 for restoring
electrical power.
nWhen an electric motor is started, both the overload indicator light (red) and the
output indicator light (green) may go on simultaneously. This is normal if the
overload indicator light (red) goes off after about four (4) seconds. If the overload
indicator light (red) stays on, consult your generator sales representative.
Overload Reset Switch
Should the generator overload, AC power will be cut off
but the engine will stay running. Correct the overload
condition and then press the overload reset switch on
the front panel. AC power will be restored immediately.
DC Operation
The DC receptacle may be used for charging 12 volt automotive-type batteries only.
It is not designed to operate DC motors or transformers. Output voltage is 15-30V.
DC output will vary according to the position of the Smart-throttle switch.
1. Connect the charging cable to the DC receptacle of the generator and then to the
battery terminals.
nBatteries give off explosive gases; keep spark, flames, cigarettes, and other
sources of ignition away.
nProvide adequate ventilation when charging.
nBatteries contains sulfuric acid (electrolyte). Contact with skin or eyes may cause
severe burns. Wear protective clothing and a face shield.
nIf contact is made with skin, flush with water immediately.
nIf contact is made in eyes, flush with water immediately for at least 15 minutes
and contact a physician.
nBattery contents are poisonous — If swallowed, drink large quantities of water or
milk and follow with milk of magnesia or vegetable oil and call a physician.
nKEEP OUT OF REACH OF CHILDREN.
nDo not start an automobile engine with the generator still connected to the
battery. The generator can be damaged.
nConnect the positive battery terminal to the positive charging cord. Do not
reverse the charging cables, or serious damage to the generator and/or battery
may occur.
nTo prevent the possibility of creating a spark near the battery, connect the
charging cable first to the generator then to the battery. After charging,
disconnect the cable first at the battery.
nBefore connecting charging cables to a battery that is installed in a vehicle,
disconnect the vehicle’s ground battery cable. Reconnect the vehicle's ground
battery cable after the charging cables are removed. This procedure will prevent
the possibility of a short circuit and sparks if accidental contact is made between
a battery terminal and the vehicle's frame or body.

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The DC output is to be used to charge batteries only. Serious damage to the stator
windings can occur if connected to a DC motor or transformer.
nThe DC receptacle may be used while the AC power is in use.
nThe DC receptacle is protected from an overload with a fuse. If the DC circuit is
overloaded, the 5 amp fuse will blow and power to the DC receptacle will cease.
The red light on the DC panel will illuminate. The fuse is located to the left of the
receptacle and is accessed by snapping open the access door. Replace the fuse
with one of the same capacity. Using a higher rated fuse may cause damage to
the generator alternator.
5 AMP FUSE
ACCESS DOOR
2. Start the engine
nThe DC receptacle may be used while the AC power is in use.
nAn overloaded DC circuit will trip the DC circuit fuse. The fuse must be replaced
before the DC receptacle is operative.
nReplace the fuse with one of the same size and rating (5A).
nExceeding the current rating may lead to alternator damage.
Air Conditioning Operation
nFor best results, the SMART throttle switche should be in the off position.
nBring the generator to normal operating temperature before applying the air
conditioning load. Always allow a 2 minute wait period when manually cycling an
air conditioner off and on.
nA longer wait period may be required under unusually hot weather conditions.
nAdditionally, all other loads should be turned off until the air conditioner has
started and is performing normally. It is also important to follow the air conditioner
manufacturer's instructions for starting and restarting for proper operation.
nSome air conditioner manufacturers offer a start capacitor or rapid start kit. The
lack of a start capacitor can cause the air conditioner to draw too high a starting
current and overload the generators. Contact your air conditioner manufacturer if
you consistently have problems starting your air conditioner.
nThis generator is not generally recommended for air conditioners exceeding
13,500 BTUs.
Low oil alarm system
The low oil alarm system is designed to prevent engine
damage caused by an insufficient amount of oil in
the crankcase. Before the oil level in the crankcase
falls below a safe limit, the low oil alarm system will
automatically shut down the engine (the engine switch
will remain in the ON position).
If the low oil alarm system shuts down the engine the red
low oil alarm indictor light will come on when you operate
the starter, and the engine will not run. If this occurs,
search for any oil leaks. Add engine oil to resume normal operation.

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SMART Throttle
When the SMART throttle is placed in
the on position, engine speed is kept at
idle automatically when the electrical
load is disconnected and returns to the
proper speed required by the electrical
load when the load is reconnected.
The engine speed varies according to the amount of load applied to the generator.
Placing the smart throttle in the on position is recommended to minimize fuel
consumption and engine noise while in operation.
nThe Smart-throttle system does not operate efficiently if the electrical appliance
will be used in a rapid on-off or low-to-high rpm mode.
nWhen high electrical loads are connected simultaneously, turn the Smart-throttle
switch to the OFF position to reduce voltage fluctuation or shutdown.
nIn DC operation, turn the Smart-throttle switch to the OFF position. When the
Smart throttle is in the off position, the engine runs at rated load RPM.
SMART-
THROTTLE
SWITCH
ON
OFF
High altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively rich.
Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter main
fuel jet in the carburetor. If you always operate the generator at altitudes higher than
5000 feet (1500 meters) above sea level, have your authorized sales representative
install a high altitude main jet.
Even with suitable carburetor jetting, engine horsepower will decrease approximately
3.5% for each 1000 feet or 305 meter increase in altitude. The effect of altitude on
the horsepower will be greater than this if no carburetor modification is made.
nOperation of the generator at an altitude lower than the carburetor is jetted for
may result in reduced performance, overheating, and serious engine damage
caused by an excessively lean air/fuel mixture. Be sure to have any modification
reversed at lower altitudes.
Temperature
High temperature adversely affects generator operation. Generator performance will
decrease 1% for each 10°F (5.5°C) increase in temperature above 85°F (29°C).
The normal operating range of this generator is -20° to 113° F (-29° to 45°C)
nDo not operate the generator when the ambient temperature is below -20°F
(-29°C).
nDo not operate the generator when the ambient temperature exceeds 113°F
(45°C).

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6. Stopping The Engine
2. Turn the engine switch to the OFF position.
To stop the engine in an emergency, turn the engine switch to the OFF position.
IN NORMAL USE:
1. Switch off the connected equipment and pull the inserted plug out.
PLUG FROM
APPLIANCE
ON
OFF
START
ENGINE SWITCH
7. Maintenance
Perform maintenance and adjustment to keep the generator in the best operating
condition. Inspect or service as scheduled in the table below.
nShut off generator before performing any maintenance. If the engine must be run,
make sure the area is well ventilated. The exhaust contains poisonous carbon
monoxide gas.
nUse genuine parts or their equivalent. The use of replacement parts that are not
of equivalent quality may damage the generator.
nWhen repairing or replacing the accessories of emission control system, make
sure to use the EPA standard accessories.
Emission control system
Emission source
Exhaust gas contains carbon monoxide, nitrous oxide (NOx), and hydrocarbons. It
is very important to control the emissions of NOX and hydrocarbons as they are
a major contributor to air pollution. Carbon monoxide is a poisonous gas. The
emission of fuel vapors is a source of pollution as well. The MMD PowerPro
generator engine utilizes a precise air-fuel ratio and emission control system to
reduce the emissions of carbon monoxide, NOX, hydrocarbons, and evaporative fuel
emissions.
Regulation
Your engine has been designed to meet current Environmental Protection Agency
(EPA) and the California Air Resources Board (CARB) clean air standards if so
equipped and designated. The regulations dictate that the manufacturer provides
operation and maintenance standards regarding the emission control system. Tune-
up specifications are provided in the specifications section and a description of the
emission control system may be found in an appendix to this manual. Adherence
to the following instructions will ensure your engine meets the emission control
standards.

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Modification
Modification of the emission control system may lead to increased emissions.
Modification is defined as the following:
nDisassemble or modify the function or parts of the intake, fuel or exhaust system.
nModify or destroy the speed governing function of the generator.
Engine faults that may affect emission
Any of the following faults must be repaired immediately. Consult with your
authorized MMD Equipment service center for diagnosis and repair:
nHard starting or shut down after starting
nUnstable idle speed
nShut down or backfire after applying an electrical load
nBackfire or after fire.
nBlack smoke and/or excessive fuel consumption
Replacement parts and accessories
The parts making up the emission control system applied to the engines have been
specifically approved and certified by the regulatory agencies. You can trust the
replacement parts supplied by MMD Equipment have been manufactured to the
same production standard as the original parts. The use of replacement parts or
accessories which are not designed by MMD Equipment may affect the engine
emission performance. The manufacturers of replacement parts and accessories
have the responsibility to guarantee that their replacement products will not
adversely affect emission performance.
Maintenance
Maintain the generator according to the maintenance schedule in this section.
More frequent maintenance should be performed when used in dusty areas, under
conditions of high load, temperature, and humidity.
Air Quality Index (only for California certified models)
CARB requires that an air quality index label be attached to every certified engine
showing the engine emission information for the emission duration period. The label
is provided for the user to compare the emission performance of different engines.
The lower the air index, the better the engine emission performance. The description
of durability is helpful for the user to learn the engine emission duration period and
the service life of emission control system. Refer to the warranty section of this
owner’s manual for more information.
Regular Service Period (1)
Each
Use
First
Month or
20 Hours
Every 3
Months
or 50
Hours
Every 6
Months
or 100
Hours
Every
Year
or 300
Hours
ITEM — Perform at every indicated month
or operating hour interval, whichever comes
first.
Engine Oil Check level o
Change o o
Air Cleaner Check o
Clean/replace o (2)
Spark Plug Clean/adjust o
Spark Arrester Clean o
Fuel Sediment
Cup Clean o
Valve Clearance Check/adjust o (3)
Fuel Tank and
Filter Clean o (3)
Fuel Lines Check Every 2 years (Replace if necessary) (3)
NOTE:
1. Log hours of operation to determine proper maintenance.
2. Service more frequently when used in dusty conditions.
3. These items should be serviced by an authorized MMD service center unless the
owner has the proper tools and is mechanically proficient.
The air quality index label is designed
to be permanently affixed to the
generator and should not be removed.
EMISSION CONTROL INFORMATION
THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GASOLINE.
THIS ENGINE MEETS U.S. EPA AND CALIFORNIA EXH AND EVP EMISSION
REGUL ATIONS FOR SMALL OFF-ROAD ENGINES FOR 2014 MODEL YEAR.
ENGINE FAMILY: EWKPS.3982GC EXH ECS: TWC+PAIR EVAP ECS: CP
CARB EVAP FAMILY: CP3982 EPA EVAP FAMILY: EWKPPNHEQ002
DISPLACEMENT: 389CC EMISSIONS COMPLIANCE PERIOD: 250 HOURS
CHECK OWNER’S MANUAL FOR FURTHER DETAILS

MMD PowerPro Inverter Generators • IGR6000H (091615) MMD PowerPro Inverter Generators • IGR6000H (091615)
Page 30 Page 31
1. CHANGING OIL
Drain the oil while the engine is still warm to assure fast and complete draining.
a. Open left side maintenance cover.
b. Remove the oil cap.
c. Remove the drain bolt and drain the oil. There is a rubber plug in the bottom of
the generator pan that can be removed to facilitate draining the oil. The generator
will have to be raised off the ground and supported while the oil drains. Retighten
the bolt securely.
d. Refill with the recommended oil, and check the oil level.
e. Close the left side maintenance cover.
nMake sure to turn the engine switch and the fuel cap vent lever OFF before
draining oil.
Model Oil Capacity qt. (L)
IGR6000H 1.2 (1.1)
Engine oil capacity
OIL CAP /
OIL LEVEL
INDICATOR
DRAIN
BOLT
UPPER LIMIT
LOWER LIMIT
2. AIR CLEANER SERVICE
A dirty air cleaner will restrict air flow to the carburetor. To prevent carburetor
malfunction, service the air cleaner regularly. Service more frequently when
operating the generator in extremely dirty areas.
nDo not use gasoline or low flash point solvents for cleaning. They are flammable
and explosive under certain conditions.
nNever run the generator without the air cleaner, otherwise rapid engine wear may
result.
a. Open service door.
b. Unsnap the clips and remove the air cleaner cover.
c. If the paper element is dirty, torn, or replacement is called for based on hours of
operation, replace it with a new one. Do not attempt to clean the element.
d. Reinstall the air cleaner cover.
e. Close and latch the service door.
nPlease dispose of used motor oil in a manner that is compliant with environment
and local disposal regulations. Do not throw it in the trash, pour it on the ground,
or down the drain.
AIR CLEANER BASE
AIR CLEANER ELEMENT
AIR CLEANER COVER

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Page 32 Page 33
3. SPARK PLUG MAINTENANCE
To ensure proper engine operation, the spark plug must be properly gapped and free
of deposits.
Recommended spark plug: WR7DC
To ensure proper engine operation, the spark plug must be properly gapped and free
of deposits.
a. Open the service door.
b. Remove the spark plug cap.
c. Use the wrench provided to remove the spark plug.
d. Clean any dirt from around the spark plug base.
e. Visually inspect the spark plug. Discard if the insulator is cracked or chipped.
Clean the spark plug with a wire brush if it is to be reused.
f. Measure the plug gap with a feeler gauge. The gap should be 0.028-0.031in (0.7-
0.8mm). Correct as necessary by carefully bending the side electrode.
g. Install the spark plug carefully, by hand, to avoid cross-threading.
h. After a new spark plug has been seated by hand, it should be tightened 1/2 turn
with a wrench to compress the sealing washer. If a used plug is being reinstalled,
it should only require 1/8 to 1/4 turn after being seated.
i. Reinstall the spark plug cap.
j. Close and latch the service door.
SPARK PLUG
WRENCH
SPARK PLUG
PLUG GAP
0.028-0.031in
(0.7-0.8mm)
nThe spark plug must be securely tightened. An improperly tightened plug can
become very hot and possibly damage the generator.
nNever use a spark plug with an improper heat range.
4. Spark arrester maintenance
a. Remove the generator rear cover to access the spark arrestor.
b. Remove the spark arrestor from the muffler by unscrewing the clamp.
c. Clean the spark arrestor with a stiff wire brush.
d. Replace if the wire mesh is perforated or torn.
e. Reinstall the spark arrester.
f. Reinstall rear cover.
nIf the generator has been running, the muffler will be very hot. Allow it to cool
before proceeding.
nThe spark arrester must be serviced every 100 hours to maintain its efficiency.
nInspect the spark arrester screen for holes or tears. Replace as necessary.
REAR COVER
SPARK ARRESTER
SECONDARY GULP VALVE

MMD PowerPro Inverter Generators • IGR6000H (091615) MMD PowerPro Inverter Generators • IGR6000H (091615)
Page 34 Page 35
8. Transporting and Storage
To prevent fuel spillage when transporting or during temporary storage, the generator
should be secured in its normal upright operating position with the engine switched
OFF. Fuel vapors or spilled fuel may ignite. Transporting the generator with gasoline
in the fuel tank is prohibited.
Transporting
nWhen transporting the generator in a vehicle, drain
all fuel from the generator.
nDo not operate the generator while it is on or in a
vehicle. Take the generator out of the vehicle and
use it in a well ventilated area.
nAvoid a storage area exposed to direct sunlight
when putting the generator in a vehicle. If the
generator is left in an enclosed vehicle for many hours, high temperature inside
the vehicle could cause residual fuel to vaporize resulting in a possible explosion.
nDo not drive on a rough road for an extended period with the generator on
board.
Storage
Before storing the unit for an extended period:
1. Clear storage area of excessive humidity and dust.
2. Drain all gasoline from the fuel tank into an approved gasoline container.
a. Turn the engine switch ON, and loosen the carburetor drain screw and drain
the gasoline from the carburetor into a suitable container.
b. Tighten the carburetor screw, close the fuel valve lever and left side
maintenance cover.
nGasoline is extremely flammable and explosive under certain conditions.
nDo not smoke or allow flames or sparks in the area.
3. Change the engine oil (see page 30).
DRAIN
PLUG
4. Spark plug and engine
a. Remove the spark plug and pour about a tablespoon of clean engine oil into the
cylinder.
b. Crank the engine several revolutions to distribute the oil and then reinstall the
spark plug.
b. Slowly pull the starter grip until resistance is felt. At this point, the piston is coming
up on its compression stroke and both the intake and exhaust valves are closed.
Storing the engine in this position will help to protect it from internal corrosion.
nRecharge the battery once a month while storing.
Fuel Treatment and Exercising the Generator
Any small engine is very susceptible to fuel varnishing. Fuel systems have very small
orifices and passageways which can easily become clogged by fuel residue that
takes the form of gum and varnish. This can lead to hard starting and rough running
and possibly cause the engine not to start at all. As EPA regulations dictate no kits
available to renew a carburetor, carburetor replacement will be necessary. Fuel
preservatives are readily available at leading RV and marine retailers. Regularly add
a fuel preservative to the generator fuel tank or fuel supply. Drain the carburetor bowl
prior to any storage period longer than 30 days.
It is essential that the generator be exercised on a regular basis. This will prevent the
accumulation of varnish or sludge in the fuel system and also remove moisture from
the generator windings. Additionally, it will lubricate the engine seals, other moving
components, and keep the battery charged. Exercise the generator by running it with
at least 50% load for one hour every month.

MMD PowerPro Inverter Generators • IGR6000H (091615) MMD PowerPro Inverter Generators • IGR6000H (091615)
Page 36 Page 37
9. Wheel Kit
1. Washer
4. Wheel
3. Lock pin
4. Locking swivel wheel
5. Bolt M6X16
To install the front wheels, install a
washer on the axle, then the wheel,
another washer and secure with a wheel
clip.
To install the locking swivel wheels, line
up the bolt holes in the chassis with
the holes in the wheel attaching plate.
Secure with the 4 bolts.
1. IG6000H Chassis- installed
2. Support Bracket (4)
3. Front Stabilizer (2)
4. Axle Assembly
5. 10" Wheel
6. Wheel Washer (4)
7. Wheel Clip
Assembly:
1. Install the four support brackets and
secure with bolts.
2. Attach the front stabilizers to the
chassis (below the handles)
3. Attach the axle assembly.
4. Install one washer on the axle
against each welded stop.
5. Install the two wheels.
6. Install the two remaining washers
and secure with the wheel clips.
The handles are preassembled before
packaging. To raise the handles,
simply raise the handle assembly to
a horizontal position. To retract the
handles, slide the chrome collars toward
you to clear the sleeve and lower them
to the starting position.
Engine will not start
Problem/Possible cause Corrective action
No fuel in tank Refuel with gasoline
Fuel switch not on Turn fuel switch to ON position
Not enough oil in engine Refill with recommended oil
Fuel not reaching carburetor How to check:
1. Turn off fuel valve and loosen drain screw
2. See if fuel is flowing from drain when fuel valve is turned
on.
If the engine still does not start, please take the generator
to an authorized sales representative.
No spark from spark plug Check spark plug or replace spark plug
How to check spark plug:
1. Remove spark plug cap and clean any debris off sparkplug.
2. Remove spark plug and install spark plug in the plug cap.
3. Set the plug-side electrode on the cylinder head to the ground.
4. Pull the recoil starter. Sparks should jump across plug gap.
If the engine still does not start, please take the generator to an authorized sales representative.
Appliance does not operate
Problem Corrective action
Output indicator not on Check appliance/equipment for defects
Overload indicator on 1. Replace appliance/equipment, or have repaired.
2. Stop and restart engine and try again.
If still not operational, please take the generator to an authorized sales representative.
No power to the DC receptacle
Problem Corrective action
DC circuit fuse blown Replace fuse
If still not operational, please take the generator to an authorized sales representative.
10. Troubleshooting
Make sure there is no spilled gasoline around spark plug. Spilled fuel may ignite.

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Page 38 Page 39
11. Specifications
Model IGR6000H
Rated Output, watts 5500
Rated Current, amp 45.8 / 22.9
Maximum Output, watts 6000
Phase Single
Parallel operation allowed No
Maximum Current, amp 50 / 25
AC Voltage 120/240
Frequency, Hz 60
DC Output 12V @ 5A
HP @ rated RPM 10.3 @ 3600
Starting System Recoil/Electric
Engine Type Air cooled, single cylinder, 4-stroke, OHV with
electronic ignition
Displacement, cc 389
Compression Ratio 8.5:1
Ignition System Transitionized
Spark Plug WR7DC
Fuel Regular unblended automotive gasoline
(87-octane)
Lube Oil SAE 10W30 (see viscosity chart)
Oil Capacity - qt. (L) 1.2 qt. (11.6L)
Noise Level, no load-full load, dB @ 23
ft. 63-70
Rated load continuous run time, hrs. 6
Fuel tank capacity, gal. 5.9
Dimensions, LxWxH, in. 32.25 x 19.5 x 23.5
Dry Weight, lb. 223
Receptacles 2-125V GFCI 20A; L14-30 125V/240V T-Lock 30A
Tune Up Specifications
Spark Plug Gap 0.024 – 0.028 in. (0.6-0.7 mm)
Valve Clearance (Intake) 0.0039 ± 0.0008 in. (0.10 ± 0.02 mm)
Valve Clearance (Exhaust) 0.0059 ± 0.0008 in. (0.15 ± 0.02 mm)
12. Warranty
For all MMD Equipment PowerPro Inverter Generators
Buyer Information:
Generators that are supplied with applicable products as
standard, original equipment are covered by this warranty
from the date of original retail purchase for a period of
three years for residential use and one year for commercial
applications. Batteries shipped with generators are
warranted by the supplier. Units used in rental fleets or as
demonstration models will be considered commercial usage.
The warranty coverage is continual from the original date
of purchase, and does not restart upon the replacement of
any part or complete unit. Individual parts replaced at any
point during the warranty period are only eligible for warranty
coverage for the balance of the original warranty period.
To be eligible for warranty service, the product must
be purchased in the United States or Canada from an
authorized MMD sales representative. This warranty
applies to the original retail purchaser only and is not
transferable. Proof of purchase and registration is required.
Parts and service labor will be covered by MMD Equipment
for any failure that is proven to be a failure in material or
workmanship under normal use during the applicable
warranty time period. This coverage is limited to parts, and
labor. It is the responsibility of the end user to return the
product to the nearest authorized repair center as directed
by the warranty administration office. MMD Equipment
reserves the right to repair or replace any part or unit at its
option. MMD Equipment may request defective parts to be
returned. Anything replaced under warranty becomes the
property of MMD Equipment.
THIS WARRANTY DOES NOT EXTEND TO PARTS
AFFECTED OR DAMAGED BY ACCIDENT AND/OR
COLLISION, NORMAL WEAR, FUEL CONTAMINATION
OR DEGRADATION, USE IN AN APPLICATION FOR
WHICH THE PRODUCT WAS NOT DESIGNED OR
ANY OTHER MISUSE, NEGLECT, INCORPORATION
OR USE OF UNSUITABLE ATTACHMENTS OR PARTS,
UNAUTHORIZED ALTERATION, OR ANY CAUSES OTHER
THAN DEFECTS IN MATERIAL OR WORKMANSHIP OF
THE PRODUCT. THIS WARRANTY DOES NOT EXTEND
TO NORMAL MAINTENANCE ITEMS SUCH AS BELTS,
HOSES, SPARK PLUGS AND FILTERS PAST THE FIRST
SCHEDULED REPLACEMENT OR SERVICE INTERVAL
FOR THESE ITEMS WHICHEVER COMES FIRST. MMD
WILL PAY FOR MINOR ADJUSTMENTS FOR A PERIOD
OF NINETY DAYS FROM THE INSERVICE DATE OF
THE GENERATOR.MMD DENIES ANY RESPONSIBILITY
FOR LOSS OF TIME OR USE OF THE PRODUCT,
TRANSPORTATION, COMMERCIAL LOSS, OR ANY
OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE.
ANY IMPLIED WARRANTIES ARE LIMITED TO THE
DURATION OF THIS WRITTEN LIMITED WARRANTY.
Product Line Commercial Retail
Inverter Generators 1 Year 3 Year s
The U.S. Environmental Protection Agency (EPA) require
manufacturers of small off-road engines to warranty their
products with a two year warranty for those components
that are specified as being part of the emission control
system. MMD Power Equipment and EPA offer the following
explanation of the Emission Control Warranty. In the United
States and Canada, new small off-road engines must be
designed, built, and equipped to meet stringent emission
standards. MMD must warrant the emission control system
on your 2011 engine for the periods of time listed below
provided there has been no abuse, neglect, improper
maintenance, or unauthorized application of your small off-
road engine. If a warrantable condition is determined, MMD
Equipment will repair your small off-road engine at no cost to
you including diagnosis, parts, and labor .Emissions control
parts on the engine are warranted for a period of two years,
subject to provisions set below. If any covered part on your
engine is defective, the part will be repaired or replaced by
MMD Power Equipment. You are responsible to maintain the
engine as defined in your MMD Generator Owner's Manual.
MMD recommends that you retain all record /receipts
covering maintenance on your engine but MMD Equipment
cannot deny warranty claims based on the lack of receipts
or for your failure to perform all scheduled maintenance. You
may be denied warranty coverage if a part has failed due
to abuse, neglect, improper maintenance, or unapproved
applications.
Repair or replacement parts are warranted for ninety (90)
days from the date of purchase. Any part replaced during
the base warranty period assumes the remainder of that
warranty period or ninety (90) days, whichever is greater.
An exception is made for the following parts which will be
warranted for six months (180 days) from date of purchase.
Selected generator parts: alternator assembly, stator, rotor,
inverter module. Selected power train parts: replacement
long block, cylinder block, cylinder head, crankshaft,
camshaft, balance shaft, manifolds, and major castings. To
be eligible for warranty coverage, the replacement part must
have been purchased in North America from an authorized
MMD sales representative. This warranty applies to the
original retail purchaser only and is not transferable. Proof of
purchase is required. Parts exported from North America are
excluded from warranty coverage. (1) Repair of replacement
parts will be covered by MMD Equipment for any failure that
is proven to be a failure in material or workmanship under
normal use during the warranty period. The warranty for
replacement parts will be limited to direct replacement only
with no allowance for freight and transportation charges. The
issuance of credit or a cash return of the purchase price will
not be applicable. MMD Equipment may request defective
parts to be returned for examination before the issuance
of credit. (2) Reimbursement of labor charges to replace a
defective part under its warranty period will be limited only
to authorized service centers and then only if an authorized
service center installed the defective part. Travel time is not
authorized.