MC10000
GENERAC
Model No. 98092 (10,000 Watt AC Generator) Manual No. B4749 Revision 0 (9/9/1999)
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Questions?
Before taking your unit
back to the store,
call the generator
helpline at
1-800-270-1408
MF 85 CT
The Reliable Ones
Portable Generator Owner’s Manual
DANGER! This generator is designed for outdoor use only. Never use this generator inside any building
or enclosure including the generator compartment of a recreational vehicle (RV). Carbon monoxide
poisoning, fire and/or an explosion may result. No user performed modifications, including venting of
exhaust and/or cooling ventilation, will eliminate the danger. Always have at least two feet of clearance on
all sides of the generator even while operating the unit outdoors.
DANGER! You must isolate the generator from the electric utility by opening the electrical systems main
circuit breaker or main switch if this unit is used for backup power. Failure to isolate the generator from
the power utility may result in injury or death to electric utility workers and damage to the
generator due to a backfeed of electrical energy.
The Emission Control System for this generator is warranted for standards set by the
Environmental Protection Agency. For warranty information refer to the Engine Owners manual.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Generac Portable Products MC10000 Extended Life Generator
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EQUIPMENT DESCRIPTION
This generator is an enginedriven, revolving field,
alternating current (AC) generator. It was designed to
supply electrical power for operating compatible
electrical lighting, appliance, tool and motor loads. This
manual contains information for a generator that
operates 120 and/or 240 Volt, single phase, 60Hz
devices that require up to 10,000 watts (10 kW) of
power that pull up to 83.3 Amps at 120 Volts or
41.7 Amps at 240 Volts.
CAUTION! Do not exceed the generators
wattage/amperage capacity. Add up the rated
watts of all devices you are connecting to
generator receptacles at one time. This total
should not be greater than 10,000 watts for this
generator. In most cases rated watts of the
electrical device can be found on the device
nameplate. If the device nameplate gives only
volts and amps, multiply volts times amps to
obtain watts (volts x amps = watts).
The generators revolving field is driven at about
3600 rpm by a twincylinder engine.
Every effort has been expended to make sure that the
information in this manual is both accurate and current.
However, Generac reserves the right to change, alter
or otherwise improve the product at any time without
prior notice.
DANGER! Do not tamper with engine
governed speed. High operating speeds are
dangerous and increase the risk of personal
injury or damage to equipment. The generator
supplies correctly rated frequency and voltage
only when running at proper governed speed.
Incorrect frequency and/or voltage can damage
some connected electrical loads. Operating at
excessively low speeds imposes a heavy load
and, when adequate engine power is not
available, may shorten engine life.
SAFETY RULES
This generator set was designed and manufactured for
specific applications. Do not attempt to modify the unit
or use it for any application it was not designed for. If
you have any questions about your generators
application, ask your dealer or consult the factory.
The manufacturer could not possibly anticipate every
circumstance that might involve a hazard. For that
reason warnings in the Manual and warnings on tags
or decals affixed to the unit are not allinclusive. If you
intend to handle, operate or service the unit by a
procedure or method not specifically recommended by
the manufacturer, first make sure that such a
procedure or method will not render this equipment
unsafe or pose a threat to you and others.
Read this manual carefully and become familiar
with your generator set. Know its applications, its
limitations and any hazards involved.
DANGER! You must isolate the generator
from the electric utility by opening the electrical
systems main circuit breaker or main switch if
this unit is used for backup power. Failure to
isolate the generator from the power utility
may result in injury or death to electric
utility workers and damage to the generator
due to a backfeed of electrical energy.
DANGER! Generator exhaust gases contain
DEADLY carbon monoxide gas. Carbon
monoxide, if breathed in sufficient
concentrations, can cause
unconsciousness or death. Operate this
equipment outdoors where adequate ventilation
is available.
The engine exhaust from this product contains
chemicals known to the State of California to
cause cancer, birth defects, or other
reproductive harm.
WARNING:
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The generator produces a very powerful voltage that
can cause serious injury or death by electrocution.
Never touch bare wires or receptacles. Never permit
a child or any unqualified person to operate the
generator.
Never handle any kind of electrical cord or device
while standing in water, while barefoot or while
hands or feet are wet. Death or serious injury from
electrocution may result.
Use a ground fault circuit interrupter (GFCI) in any
damp or highly conductive area (such as metal
decking or steel work).
Never use worn, bare, frayed or otherwise damaged
electrical cords with the generator. Death, serious
injury and property damage from electrical shock
may result.
Gasoline is highly FLAMMABLE and its vapors
are EXPLOSIVE. Never allow smoking, open
flames, sparks or heat in the vicinity while
handling gasoline. Avoid spilling gasoline on a hot
engine. Comply with all laws regulating storage and
handling of gasoline.
Do not overfill the fuel tank. Always allow room for
fuel expansion. If tank is overfilled, fuel can
overflow onto a hot engine and cause a FIRE or
an EXPLOSION.
Never store a generator with fuel in the tank where
gasoline vapors might reach an open flame, spark or
pilot light (as on a furnace, water heater, clothes
dryer). FIRE or an EXPLOSION may result.
The enginegenerator requires an adequate flow of
cooling air for its continued proper operation. Never
operate the unit inside any room or enclosure where
the free flow of cooling air into and out of the unit
might be obstructed. Allow at least 2 feet of clearance
on all sides of unit or you damage could result.
Never start or stop the unit with electrical loads
connected to receptacles AND with the connected
devices turned ON. Start the engine and let it
stabilize before connecting any electrical loads.
Disconnect all electrical loads before shutting down
the generator.
Do not insert any object through cooling slots of the
engine. You could damage the unit or injure yourself.
Never operate the generator:
in rain; in any enclosed compartment; if connected
electrical devices overheat; if electrical output is lost;
if engine or generator sparks; if flame or smoke is
observed while unit is running; if unit vibrates
excessively.
GROUNDING THE
GENERATOR
The National Electric Code requires the frame and
external electrically conductive parts of the generator
be properly connected to approved earth ground.
Local electrical codes may also require proper
grounding of the unit. For this purpose, a ground lug
(Figure 1) is provided on the cradle.
Generally, connecting a No. 12 AWG (American Wire
Gauge) stranded copper wire to the ground lug screw
and to an earthdriven copper or brass grounding rod
(electrode) provides adequate protection against
electrical shock. However, local codes may vary
widely. Consult with a local electrician for grounding
requirements in your area. Be sure to keep the ground
wire attached while you connect the electrode.
Properly grounding the generator helps prevent
electrical shock if ground fault conditions exists in the
generator or in connected electrical devices. Proper
grounding also helps dissipate static electricity, which
often builds up in ungrounded devices.
Figure 1 Location of Ground Lug
Ground Lug
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KNOW YOUR GENERATOR
Read this owners manual and safety rules before operating your generator.
Compare the illustrations with your generator to familiarize yourself with the locations of various controls and
adjustments. Save this manual for future reference.
12 Volt DC Receptacle Use this receptacle with
battery charge cables to charge a 12 Volt battery.
120 Volt AC, 20 Amp GFCI Receptacle May be
used to supply electrical power for the operation of 120
Volt AC, single phase, 60 Hz, AC electrical lighting,
appliance, tool and motor loads.
120 Volt AC, 20 Amp Locking Receptacle May be
used to supply electrical power for the operation of
120 Volt AC, 20 Amp, single phase, 60 Hz electrical
lighting, appliance, tool and motor loads.
120 Volt AC, 30 Amp Locking Receptacle May be
used to supply electrical power for the operation of
120 Volt AC, 30 Amp, single phase, 60 Hz electrical
lighting, appliance, tool and motor loads.
120/240 Volt AC, 30 Amp Locking Receptacle
May be used to supply electrical power for the
operation of 120 and/or 240 Volt AC, 30 Amp, single
phase, 60 Hz electrical lighting, appliance, tool and
motor loads.
120/240 Volt AC, 50 Amp Receptacle May be used
to supply electrical power for the operation of 120/240
Volt AC, 50 Amp, single phase, 60 Hz electrical loads.
Air Cleaner Used to limit the amount of dirt and
dust that gets in the engine.
Choke Lever Used when starting a cold engine.
Circuit Breakers (AC) Each receptacle is provided
with a "push to reset" circuit breaker to protect the
generator against electrical overload.
Fuel Tank Holds 5 U.S. gallons of unleaded fuel.
Grounding Lug Use this connection to properly
ground the generator.
Hour Meter Displays actual unit operating time -
used to schedule routine maintenance.
Idle Control Switch The idle control runs the
engine at normal (high) speeds when there is a load
present and runs the engine at idle (low) speeds when
a load is not present.
Ignition Switch Must be set to ON () position to
start generator. To turn off generator, set switch to the
STOP (o) position.
Recoil Start Handle Used to start the unit.
Spark Arrestor Muffler (not shown) Exhaust
muffler lowers engine noise and is equipped with a
spark arrestor screen.
120 Volt AC, 20 Amp
GFCI Receptacle
Idle Control Switch
Ignition Switch
Hour Meter
Choke Lever
120 Volt AC, 30 Amp
Locking Receptacle
120 Volt AC, 20 Amp
Locking Receptacle
120/240 Volt AC,
50 Amp Receptacle
Circuit Breakers (AC)
120/240 Volt AC, 30 Amp
Locking Receptacle
12 Volt DC Receptacle
Air Cleaner
Fuel Tank
Grounding Lug
Recoil Start Handle
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Your generator requires some assembly and is ready
for use after it has been properly serviced with the
recommended oil and fuel.
If you have any problems with the assembly of your
generator, please call the generator helpline at
18002701408
IMPORTANT: Any attempt to run the engine before it
has been serviced with the recommended oil will result
in an engine failure.
TO REMOVE GENERATOR
FROM CARTON
Set the palleted carton on a rigid flat surface.
Carefully cut bands around the shipping carton.
Lift carton off the generator.
Remove all packing material, carton fillers, etc.
Remove the generator from the shipping pallet.
CARTON CONTENTS
Check all contents. If any parts are missing or
damaged, call the generator helpline at
18002701408. Contents include:
10,000 Watt generator
Owners and engine manuals
125 Volt, 30 Amp plug
125 Volt, 20 Amp plug
240 Volt, 30 Amp plug
Battery charge cable
Oil fill spout
Spark arrestor screen
BEFORE STARTING THE
ENGINE
Add Engine Oil
NOTE: When adding oil to the engine crankcase in the
future, use only high quality detergent oil rated with
API service classification SF and SG rated SAE 30
weight. Use no special additives.
Select the oils viscosity grade according to your
expected operating temperature. DO NOT use
SAE 10W-40.
Above 40°F, use SAE 10W30 or SAE 30.
Below 40°F, use synthetic 5W20 or 5W30.
To add oil to the generator:
Make sure unit is on a level surface.
Clean around oil fill cap and remove it.
Remove oil dipstick, wipe clean and reinsert in
engine.
Slowly fill engine with oil until it reaches the full mark
on the dipstick. Stop occasionally to check oil level.
Do not overfill.
Install oil dipstick.
Install oil fill cap. Hand tighten securely.
CAUTION! Any attempt to crank or start the
engine before it has been properly serviced with
the recommended oil will result in an engine
failure.
NOTE: The generators revolving field rides on a
prelubricated and sealed ball bearing that requires no
additional lubrication for the life of the bearing.
10W30, SAE 30
Synthetic 5W20, 5W30
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Add Gasoline
DANGER! NEVER fill fuel tank indoors.
NEVER fill fuel tank when engine is running or
hot. DO NOT light a cigarette or smoke when
filling the fuel tank.
DANGER! Do not overfill the fuel tank. Always
leave room for expansion.
Use regular UNLEADED gasoline in the generator.
DO NOT use premium gasoline. DO NOT mix oil
with gasoline. DO NOT overfill the gas tank.
Clean area around fuel fill cap; remove cap.
Fill fuel tank with clean, fresh, unleaded gasoline. Be
careful not to overfill. Allow 1/2" of tank space for fuel
expansion (Figure 2).
Install fuel cap and wipe up any spilled gasoline.
IMPORTANT: It is important to prevent gum deposits
from forming in essential fuel system parts such as the
carburetor, fuel filter, fuel hose or tank during storage.
Also, experience indicates that alcoholblended fuels
(called gasohol, ethanol or methanol) can attract
moisture, which leads to separation and formation of
acids during storage. Acidic gas can damage the fuel
system of an engine while in storage. To avoid engine
problems, the fuel system should be emptied before
storage of 30 days or longer. See Storage on
page 12. Never use engine or carburetor cleaner
products in the fuel tank or permanent damage may
occur.
OPERATING THE
GENERATOR
CAUTION! Never start or stop the unit with
electrical loads connected to the receptacles.
Starting the Engine
Disconnect all electrical loads from the generator.
Make sure the Idle Control Switch is turned OFF.
Open the fuel shutoff valve.
Set the Ignition Switch to the On () position.
Pull choke control out to close choke.
NOTE: If engine is warm, you may not need as much
choking.
NOTE: Make sure the idle control switch is Off before
starting the engine.
Pull slowly on recoil handle until you feel some
resistance. Then pull rapidly to start engine. Return
recoil slowly, do not let it snap back
Applying Electrical Loads
Let engine stabilize and warm up for about two
minutes after starting.
Plug in and turn on the desired 120 or 240 Volt AC,
single phase, 60 Hertz electrical loads. DO NOT
OVERLOAD THE GENERATOR. Add up the rated
watts (or Amps) of all loads to be connected at one
time. This total should not be greater than the rated
wattage/amperage capacity of the generator. See
page 11, Dont Overload the Generator for details.
Stopping the Engine
Disconnect all electrical loads.
Turn OFF idle control.
Run engine at noload for a few minutes.
Set the Ignition Switch to the Stop (o) position.
Close the fuel shutoff valve.
Figure 2 Fuel Level
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Operating Automatic Idle Control
This switch is designed to greatly improve fuel
economy. When this switch is turned ON, the engine
will only run at its normal high governed engine speed
when an electrical load is connected. When an
electrical load is removed, the engine will run at a
reduced speed. With the switch OFF, the engine will
run at the normal high engine speed. Always have the
switch OFF when starting and stopping the engine.
Charging a Battery
Your generator has the capability of recharging a
discharged 12 Volt automotive or utility style storage
battery. Do not use the unit to charge any 6 Volt
batteries. Do not use the unit to crank an engine
having a discharged battery.
DANGER! Storage batteries give off explosive
hydrogen gas while recharging. An explosive
mixture will remain around the battery for a long
time after it has been charged. The slightest
spark can ignite the hydrogen and cause an
explosion. Such an explosion can shatter the
battery and cause blindness or other serious
injury.
DANGER! Do not permit smoking, open flame,
sparks or any other source of heat around a
battery. Wear protective goggles, rubber apron
and rubber gloves when working around a
battery. Battery electrolyte fluid is an extremely
caustic sulfuric acid solution that can cause
severe burns. If spill occurs flush area with
clear water immediately.
To recharge 12 Volt batteries, proceed as follows:
Check fluid level in all battery cells. If necessary, add
ONLY distilled water to cover separators in battery
cells. Do not use tap water.
If the battery is equipped with vent caps, make sure
they are installed and are tight.
If necessary, clean battery terminals.
Connect battery charge cable connector plug to
panel receptacle identified by the words
12VOLT D.C.
Connect battery charge cable clamp with red handle
to the positive (+) battery terminal, as shown in
Figure 3.
Connect battery charge cable clamp with black
handle to the negative () battery terminal.
Start engine. Let the engine run while battery
recharges.
When battery has charged, shut down engine.
NOTE: Use an automotive hydrometer to test battery
state of charge and condition. Follow the hydrometer
manufacturers instructions carefully. Generally, a
battery is considered to be at 100% state of charge
when specific gravity of its fluid (as measured by
hydrometer) is 1.260 or higher.
Figure 3 Connect Battery Charge Cables
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RECEPTACLES
This generator is equipped with the following
receptacles:
120 Volt AC, 20 Amp GFCI
Receptacle
This receptacle (Figure 4) is protected against
overload by a 20 Amp, push-to-reset, circuit breaker.
Use each receptacle to operate 120 Volt AC, singlephase, 60 Hz electrical loads requiring up to 2400
watts (2.4 kW) at 20 Amps of current. Use cord sets
that are rated for 125 Volts at 20 Amps (or greater).
120 Volt AC, 20 Amp Locking
Receptacle
Use a NEMA L520 plug with this receptacle. Connect
a 3wire cord set rated for 125 Volts AC at 20 Amps to
the plug (Figure 5).
Use this receptacle to operate 120 Volt AC, 60 Hz,
single phase loads requiring up to 2400 watts (2.4 kW)
of power at 20 AC Amps. The outlet is protected by a
20 Amp pushtoreset circuit breaker.
Figure 4 120 Volt, 20 Amp GFCI Receptacle
Figure 5 120 Volt, 20 Amp, Locking Receptacle
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120 Volt AC, 30 Amp Locking
Receptacle
Use a NEMA L530 plug with this receptacle. Connect
a 3wire cord set rated for 125 Volts AC at 30 Amps to
the plug (Figure 6).
Use this receptacle to operate 120 Volt AC, 60 Hz,
single phase loads requiring up to 3600 watts (3.6 kW)
of power at 30 AC Amps. The outlet is protected by a
30 Amp pushtoreset circuit breaker.
120/240 Volt AC, 30 Amp Locking
Receptacle
Use a NEMA L1430 plug with this receptacle.
Connect a 4wire cord set rated for 250 Volts AC at
30 Amps (or greater) (Figure 7). You can use the same
4wire cord if you plan to run a 120 Volt load.
This receptacle powers 120/240 Volt AC, 60 Hz, single
phase loads requiring up to 3600 watts of power
(3.6 kW) at 30 AC Amps for 120 Volts; 7200 watts of
power (7.2 kW) at 30 AC Amps for 240 Volts. The
outlet is protected by a 30 Amp pushtoreset circuit
breaker.
Figure 6 120 Volt, 30 Amp, Locking Receptacle
Figure 7 120/240 Volt, 30 Amp, Locking Receptacle
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240 Volt AC, 50 Amp Receptacle
Use a NEMA 650 plug with this receptacle. Connect a
4wire cord set rated for 250 Volts AC at 50 Amps to
the plug (Figure 8).
Use this receptacle to operate 240 Volt AC, 60 Hz,
single phase loads requiring up to 10,000 watts
(10.0 kW) of power.
CAUTION! Although this outlet states it has a
240 Volt 50 Amp rating (up to 12,500 watts), the
generator is only rated for 10,000 watts.
Powering loads that exceed the wattage/
Amperage capacity of the generator can
damage it or cause serious injuries.
GROUND FAULT
PROTECTION
This unit is equipped with a Ground Fault Circuit
Interrupter (GFCI). This device meets applicable
federal, state and local codes.
The GFCI protects against electrical shock that may be
caused if your body becomes a path which electricity
travels to reach ground. This could happen if you touch
a Live appliance or wire, or are touching plumbing or
other materials that connect to the ground.
When protected by a GFCI, one may still feel a shock,
but the GFCI should cut current off quickly enough so
that a person in normal health should not suffer any
serious electrical injury.
DANGER: The GFCI will not protect you
against the following situations: (1) Line-to-line
shocks; (2) Current overloads or line-to-line
short circuits. The fuse or circuit breaker at the
distribution panel must provide such protection.
Testing the GFCI
Test your GFCI outlet every month, as follows:
Push the black Test button. The red Reset button
should pop out, which should allow no power to
reach the outlet. Use a test lamp in each outlet to
test this.
DANGER: If the Reset button does not pop
out or the test lamp remains lit when the
Reset button is popped out, do not use any
outlets on the circuit. Call a qualified electrician.
If the GFCI tests good, restore power by pressing the
Reset button firmly until it is fully in place and locks
in that position. If the GFCI outlet does not reset
properly, do not use the outlet call a qualified
electrician.
If the GFCI trips by itself at any time, reset and test
the outlet. If the reset button does pop out when
the test button is pressed, do not use the outlet.
Call a qualified electrician.
Figure 8 240 Volt AC, 50 Amp, Receptacle
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DONT OVERLOAD THE
GENERATOR
Overloading a generator in excess of its rated wattage
capacity can result in damage to generator and to
connected electrical devices. Observe the following, to
prevent overloading the unit:
Add up the total wattage of all electrical devices to
be connected at one time. This total should NOT be
greater than the generators wattage capacity.
The rated wattage of lights can be taken from light
bulbs. The rated wattage of tools, appliances and
motors can usually be found on a data plate or decal
affixed to the device.
If the appliance, tool or motor does not give wattage,
multiply Volts times ampere rating to determine watts
(volts x amps = watts).
Some electric motors, such as induction types,
require about three times more watts of power for
starting than for running. This surge of power lasts
for only a few seconds when starting such motors.
Be sure you allow for this high starting wattage when
selecting electrical devices to connect to your
generator. First figure the watts needed to start the
largest motor. Add to that figure the running watts of
all other connected loads.
Items in Figure 9 below are provided to help you to
determine how many items the generator can
operate at one time.
Device .............................................Running Watts
*Air Conditioner (12,000 Btu)..........................1700
*Air Conditioner (24,000 Btu)..........................3800
*Air Conditioner (40,000 Btu)..........................6000
Battery Charger (20 Amp) ................................500
Belt Sander (3") ..............................................1000
Chain Saw ......................................................1200
Circular Saw (61/2")...........................800 to 1000
*Clothes Dryer (Electric) .................................5750
*Clothes Dryer (Gas) ........................................700
*Clothes Washer.............................................1150
Coffee Maker ..................................................1750
*Compressor (1 HP) .......................................2000
*Compressor (3/4 HP) ....................................1800
*Compressor (1/2 HP) ....................................1400
Curling Iron .......................................................700
*Freezer............................................................700
*Dehumidifier ....................................................650
Disc Sander (9") .............................................1200
Edge Trimmer...................................................500
Electric Blanket.................................................400
Electric Nail Gun.............................................1200
Electric Range (per element)..........................1500
Electric Skillet .................................................1250
*Furnace Fan (3/5 HP) .....................................875
*Garage Door Opener ...........................500 to 750
Hair Dryer .......................................................1200
Hand Drill .............................................250 to 1100
Device .............................................Running Watts
Hedge Trimmer.................................................450
Impact Wrench..................................................500
Iron .................................................................1200
*Jet Pump .........................................................800
Lawn Mower ...................................................1200
Light Bulb..........................................................100
Microwave Oven..................................700 to 1000
*Milk Cooler ....................................................1100
Oil Burner on Furnace ......................................300
Oil Fired Space Heater (140,000 Btu) ..............400
Oil Fired Space Heater (85,000 Btu) ................225
Oil Fired Space Heater (30,000 Btu) ................150
*Paint Sprayer, Airless (1/3 HP)........................600
Paint Sprayer, Airless (handheld) .....................150
Radio .......................................................50 to 200
*Refrigerator .....................................................700
Slow Cooker .....................................................200
*Submersible Pump (11/2 HP) .....................2800
*Submersible Pump (1 HP) ............................2000
*Submersible Pump (1/2 HP) .........................1500
*Sump Pump .......................................800 to 1050
*Table Saw (10") ................................1750 to 2000
Television...............................................200 to 500
Toaster...............................................1000 to 1650
Weed Trimmer..................................................500
* Allow 3 times the listed watts for starting these devices.
Figure 9 Wattage Reference Guide
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GENERAL MAINTENANCE
RECOMMENDATIONS
The Owner/Operator is responsible for making sure
that all periodic maintenance tasks are completed on a
timely basis; that all discrepancies are corrected; and
that the unit is kept clean and properly stored. Never
operate a damaged or defective generator.
Engine Maintenance
See your engine owners manual for information
needed to maintain and service the engine.
Please note that this unit is equipped with a Low Oil
Pressure Shutdown system. Review this information in
the engine owners manual should you have problems
running the unit.
Generator Maintenance
Generator maintenance consists of keeping the unit
clean and dry. Operate and store the unit in a clean dry
environment where it will not be exposed to excessive
dust, dirt, moisture or any corrosive vapors. Make sure
the cooling air slots in the generator do not become
clogged with snow, leaves or other foreign material.
Check cleanliness of the generator frequently and
clean when dust, dirt, oil, moisture or other foreign
substances are visible on its exterior surface.
NOTE: DO NOT use a garden hose to clean generator.
Water can enter the engine fuel system and cause
problems. In addition, if water enters the generator
through the cooling air slots, some water will be
retained in the voids and cracks of the rotor and stator
winding insulation. Water and dirt buildup on the
generator internal windings will eventually decrease
the insulation resistance of these windings.
To Clean the Generator
Use a damp cloth or a soft bristle brush to wipe
exterior surfaces clean.
A vacuum cleaner may be used to pick up loose dirt
and debris.
Low pressure air (not to exceed 25 psi) may be used
to blow away dirt. Inspect cooling air slots and
opening on generator. These openings must be kept
clean and unobstructed.
STORAGE INSTRUCTIONS
The generator should be started at least once every
seven days and allowed to run at least 30 minutes. If
this cannot be done and you must store the unit for
more than 30 days, use the following guidelines to
prepare it for storage.
Generator Storage
Clean the generator as outlined in To Clean the
Generator.
Check that the cooling air slots and openings on the
generator are open and unobstructed.
Change engine oil.
Drain fuel and run engine until the fuel system is
empty.
Remove spark plugs and pour about 1 ounce of
clean engine oil into spark plug holes. Crank engine
over slowly several times, to distribute oil. Install and
tighten spark plugs.
Store the unit in a clean dry place.
DANGER! Storage covers can be flammable.
Do not place a storage cover over a hot
generator. Let the unit cool for 5 minutes before
placing cover on the unit.
SPECIFICATIONS
Rated Maximum Continuous
AC Power Output.......................... 10,000 watts
(10 kW)
Rated Voltage .................................. 120/240 Volts
Rated Maximum Current
at 240 Volts ................................... 41.7 AC Amperes
at 120 Volts ................................... 83.3 AC Amperes
Phase............................................... 1
Rated AC Frequency ....................... 60 Hertz
Number of Rotor Poles .................... 2
Driven Speed of Rotor ..................... 3600 rpm
Generac Portable Products MC10000 Extended Life Generator
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Problem Cause Correction
Engine is running, but no 1. One of the circuit breakers is open. 1. Reset circuit breaker.
AC output is available. 2. Fault in generator. 2. Contact Generac service facility.
3. Poor connection or defective 3. Check and repair.
cord set.
4. Connected device is bad. 4. Connect another device that is in
good condition.
Engine runs good at no-load but bogs 1. Short circuit in a connected load. 1. Disconnect shorted electrical
down" when loads are connected. load.
2. Engine speed is too slow. 2. Contact Generac service facility.
3. Generator is overloaded. 3. See Don't Overload the Generator,
page 11.
4. Shorted generator circuit. 4. Contact Generac service facility.
Engine will not start; or starts 1. Run/Stop Switch set to STOP. 1. Set switch to RUN.
and runs rough. 2. Dirty air cleaner. 2. Clean or replace air cleaner.
3. Out of gasoline. 3. Fill fuel tank.
4. Stale gasoline. 4. Drain gas tank; fill with fresh fuel.
5. Spark plug wire not connected 5. Connect wire to spark plug.
to spark plug.
6. Bad spark plug. 6. Replace spark plug.
7. Water in gasoline. 7. Drain gas tank; fill with fresh fuel.
8. Overchoking. 8. Open choke fully and crank engine.
9. Excessively rich fuel mixture. 9. Contact Generac service facility.
10.Intake valve stuck open or closed. 10. Contact Generac service facility.
11.Engine compression lost. 11. Contact Generac service facility.
12.Failed battery. 12. Replace battery.
Engine shuts down during operation. 1. Out of gasoline. 1. Fill fuel tank.
2. Low oil level. 2. Fill crankcase to proper level.
Engine lacks power. 1. Load is too high. 1. See Don't Overload the Generator,
page 11.
2. Dirty air filter. 2. Replace air filter.
Engine hunts or falters. 1. Choke is opened too soon. 1. Move choke to halfway position until
engine runs smoothly.
2. Carburetor is running too rich 2. Contact Generac service facility.
or too lean.
TROUBLESHOOTING
Generac Portable Products MC10000 Extended Life Generator
14
SCHEMATIC
Generac Portable Products MC10000 Extended Life Generator
15
WIRING DIAGRAM
Generac Portable Products MC10000 Extended Life Generator
16
GENERATOR EXPLODED VIEW
Generac Portable Products MC10000 Extended Life Generator
17
Item Part # Qty Description
1 NSP 1 ENGINE, Generac Power
Systems
2 93074 1 SHIELD, Heat Engine
3 77304 2 SUPPORT, Engine
4 90916 1 SHIELD, Heat-Stator
5 80270 1 VALVE, Fuel Shut-Off
6 78299 1 BUSHING, Fuel Valve
7 B4325 1 CAP, Fuel Tank
8 38353 8 MOUNTS, Vibration
9 78831B 4 CAPSCREW, M6-1.0 x 60mm
10 93615 1 TANK, Fuel
11 92558 1 CRADLE
12 83465 4 GROMMET, Fuel Tank
Mounting
13 56892 3 CRIMPTITE, 10-24 x 3/8"
14 23152 8 CAPSCREW, 3/8-16 x 3/4"
15 22237 16 WASHER, 3/8" Lock
16 22241 8 NUT, 3/8-16 Hex
17 75246 4 3/8-16 x 1-1/4" Lg. Self-
Tapping
18 22129 2 WASHER, M8-Lock
19 39253 2 CAPSCREW, M8-1.25 x 16
Hx Hd
20 92557 1 ASSEMBLY, Control Panel
21 96867 1 ASSEMBLY, Stepper Motor
23 18553621 1 ASSEMBLY, Ground Wire
24 86292 5 CAPSCREW, #10, Self Driller
25 23762 1 WASHER, #10 Shakeproof
26 79661N 1 DECAL, Engine
27 B4986 1 DECAL, Ground
28 92982 1 DECAL, Danger
29 92563 1 DECAL, Control Panel
Item Part # Qty Description
30 93016 1 DECAL, Side Panel
31 NSP 1 DECAL, Data Plate
32 77816 1 DECAL, Caution Hot Muffler
33 95349 1 PLATE, Adjusting
34 95348 1 BELL CRANK
37 93826 1 DECAL, Start Instructions
38 75477 2 SCRW, M5-0.8 x 20 Phillips
Hd
39 96716 3 WASHER, Nylon
40 95921 1 LINKAGE, Bell Crank to
Throttle
41 95920 1 LINKAGE, Stepper Motor to
Bell Crank
42 33141 1 CAPSCRW,10-32 x 3/4" Hex
Hd
43 51713 1 WASHER, M5 Flat
44 49226 1 WASHER, M5 Lock
45 62265 2 GROMMET, Rubber
47 22261 1 WASHER, 3/8 Internal
Shakeproof
49 96378 1 SPACER
50 96717 1 SPRING
51 81886 1 DECAL, STA-BIL
52 73054 1 DECAL, Fuel Shut Off
Items Not Shown
B4428 1 Generator Owners Manual
37806 1 125V 30A Plug
43438 1 120/240V 30A Plug
65787 1 Battery Charge Cable
93568 1 125V 30A Plug
GENERATOR PARTS LIST
Generac Portable Products MC10000 Extended Life Generator
18
Item Part # Qty Description
1 NSP 1 ENGINE, Generac Power
Systems
2 B55277 1 GUARD, Center
3 B71791 1 PLATE, Cover
4 46852 8 SCREW, No. 10-32 x 1/4"
5 22129 11 WASHER, 5/16" Lock
6 86307 2 CAPSCREW, 5/16"-24 x 3/4"
Hex Head
7 B55275 3 GUARD, Fan
8 BB2700 1 CASTING, Adapter
9 24114 4 NUT, 5/16-24" Hex
10 22237 4 WASHER, 3/8" Lock
Item Part # Qty Description
11 23152 4 CAPSCREW, 3/8"-16 x 3/4"
Hex Head
12 92381 1 ASSEMBLY, Rotor 10-KW
13 65791 1 BEARING
14 50190 1 WASHER, 5/16" Flat
15 53365 1 CAPSCREW, 5/16"-24 x
10.75" Hex Head
16 B92382 1 ASSEMBLY, Stator 10-KW
17 B49410A 1 CARRIER, Rear Bearing
18 77324 4 CAPSCREW, 5/16"-24 x 12.25
Hex Head
19 B77303 1 SUPPORT, Alternator
POWER HEAD EXPLODED VIEW/PARTS LIST
Generac Portable Products MC10000 Extended Life Generator
19
Item Part # Qty Description
1 95941 1 Control Panel
2 95906 1 Control Panel Box
3 43437 1 120/240V, 30A Locking Outlet
4 80409 1 120V, 20A Duplex GFCI Outlet
5 68868 1 120V, 30A Locking Outlet
6 96476 1 System Control Board
7 96236 1 Engine Harness Assembly
8 90576 1 Rubber Grommet Connector
9 74191 1 250V, 50A Outlet
10 87962 1 12V, 10A Auto Restart CB
11 93929 4 1/2" Hex Stand Off
12 51715 12 M4-0.7 Hex Nut
13 22264 16 #8 Lock Washer
14 43181 4 M3-0.5 x 10 Screw
15 75475 12 M4-0.7 x 10 Mach. Screw
16 38150 12 #8 Flat Washer
17 23365 12 #8 Shakeproof
18 66822 1 12V DC Outlet & Bracket
19 43182 4 M3 Lock Washer
20 75207A 2 30A Circuit Breaker
21 78653 1 RUN/STOP Switch
Item Part # Qty Description
22 93986 4 M3-0.5x20mm Mach. Screw
23 91526 4 M5-0.8 x 12 Screw
24 49226 4 M5 Lock Washer
25 23897 4 M5 Flat Washer
26 75207 3 20A Circuit Breaker
27 74190 1 120V, 20A Locking Outlet
28 92953 1 50A 3-Terminal Terminal Block
29 80077 4 M4-0.7 x 20 Mach. Screw
30 94117 1 Idle Control Board
31 84028 1 Idle Control Transformer
32 65795 1 Battery Charge Rectifier
33 84135 1 Rubber Grommet
34 76040 1 M5-0.8 x 16mm Screw
35 77604 1 Hour Meter
36 51714 2 M3-0.5 Hex Nut
37 55823 2 M3-0.5 x 16 Screw
38 64525 4 3/4" Hex Stand-Off
39 64526 8 #6-32 x 3/8" Tap Screw
40 82538 1 On-Off Switch
Not Shown:
96471 1 Extension Cord Assy
CONTROL PANEL EXPLODED VIEW AND PARTS LIST
LIMITED WARRANTY
FOR OVERHEAD VALVE V-TWIN ENGINE-DRIVEN PORTABLE GENERATORS
GENERAC PORTABLE PRODUCTS (hereafter referred to as the COMPANY) warrants to the original purchaser
that all components originally equipped with the generator, excluding the engine, for its portable generator will be
free from defects in materials or workmanship for the items and period set forth below from the date of original
purchase. This warranty is not transferable and applies only to portable generators driven by an overhead valve
V-Twin engine.
Consumer* Commercial*
Alternator 2 years (2nd year parts only) 1 year
Engine Warranted solely by the engine manufacturer
With the exception of European Community Countries, all units bound for export shall be warranted for
One (1) Year in Consumer applications, and 90 days in Commercial applications as defined below.
*NOTE: For the purpose of this warranty "consumer use" means personal residential household use by
original purchaser. This warranty does not apply to units used for Prime Power in place of utility.
"Commercial Use" means all other uses, including rental, construction, commercial and income
producing purposes. Once a generator has experienced commercial use, it shall thereafter be considered
a commercial use generator for the purposes of this warranty.
During said warranty period, the COMPANY will, at is option, repair or replace any part which, upon examination
by the COMPANY, is found to be defective under normal use and service**. Starting batteries are not warranted
by the COMPANY. All transportation costs under warranty, including return to the factory if necessary, are to be
borne by the purchaser and prepaid by the purchaser. This warranty does not cover normal maintenance and
service and does not apply to a generator set, alternator, or parts which have been subjected to improper or
unauthorized installation or alteration, misuse, negligence, accident, overloading, overspeeding, improper
maintenance, repair or storage so as, in the COMPANYs judgement, to adversely affect its performance and
reliability.
**NORMAL WEAR: As with all mechanical devices, the generator needs periodic parts service and
replacement to perform well. This warranty will not cover repair when normal use has exhausted the life
of a part or generator.
THERE IS NO OTHER EXPRESS WARRANTY. THE COMPANY HEREBY DISCLAIMS ANY AND
ALL IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THOSE OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT PERMITTED BY LAW. THE
DURATION OF ANY IMPLIED WARRANTIES WHICH CANNOT BE DISCLAIMED IS LIMITED TO
THE TIME PERIOD AS SPECIFIED IN THE EXPRESS WARRANTY. LIABILITY FOR
CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES UNDER ANY AND ALL WARRANTIES
IS EXCLUDED. THE COMPANY ALSO DISCLAIMS ANY RESPONSIBILITY FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SUCH AS THE LOSS OF TIME OR THE USE OF THE POWER
EQUIPMENT, OR ANY COMMERCIAL LOSS DUE TO THE FAILURE OF THE EQUIPMENT: AND
ANY IMPLIED WARRANTIES ARE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or limitation of
incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty
gives you specific legal rights and you may also have other rights, which vary from state to state.
For service, see your nearest COMPANY authorized warranty service facility or call 1-877-544-0982. Warranty
service can be performed only by a COMPANY authorized service facility. This warranty will not apply to service
at any other facility. At the time of requesting warranty service, evidence of original purchase date must be
presented.
GENERAC PORTABLE PRODUCTS
Jefferson, Wisconsin 53549
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