Generac Power Systems iX Series User manual

iX Series Digital Inverter
Portable Generator
Owner’s Manual
MODEL:________________________
SERIAL:________________________
DATE PURCHASED:______________
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(1-888-436-3722)
SAVE THIS MANUAL FOR FUTURE REFERENCE
000721
(000209a)
WARNING
This product is not intended to be used in
a critical life support application. Failure to
adhere to this warning could result in
death or serious injury.

Table of Contents
Section 1 Introduction and Safety 1
Introduction ..................................... 1
Safety Rules .................................... 1
Safety Symbols and Meanings ........ 1
Exhaust and Location Hazards ....... 2
Electrical Hazards ........................... 2
Fire Hazards .................................... 3
Standards Index .............................. 3
Section 2 General Information and
Setup .............................................. 4
Know Your Generator ..................... 5
Emissions Information ..................... 5
Add Engine Oil ................................ 7
Fuel ................................................. 7
Section 3 Operation ...................... 8
Operation and Use Questions ......... 8
Before Starting Engine .................... 8
Prepare Generator for Use .............. 8
Know Generator Limits .................... 8
Transporting/Tipping of the Unit ...... 9
Using the FlexPower™ Switch ........ 9
Starting Pull Start Engines .............. 9
Low Oil Level Shutdown System ... 10
Using the 12 VDC Battery Charger 10
Section 4 Maintenance and
Troubleshooting ..........................11
Maintenance Recommendations ...11
Maintenance Schedule ..................11
Preventive Maintenance ...............11
Engine Maintenance ......................11
Inspect Muffler and Spark Arrester 12
Replace Fuel Filter ........................13
Storage ..........................................13
Troubleshooting .............................15
Notes .............................................16
(000004)
WARNING
California Proposition 65. Engine exhaust and some
of its constituents are known to the state of California
to cause cancer, birth defects, and other reproductive
harm.
(000005)
WARNING
California Proposition 65. This product contains or
emits chemicals known to the state of California to
cause cancer, birth defects, and other reproductive
harm.

Owner’s Manual for Portable Generator 1
Section 1 Introduction and Safety
Introduction
Thank you for purchasing a Generac Power
Systems Inc. product. This unit has been
designed to provide high-performance, effi-
cient operation, and years of use when main-
tained properly.
If any section of the manual is not understood,
contact your nearest Independent Authorized
Service Dealer (IASD), or contact Generac
Customer Service at 1-888-GENERAC (1-
888-436-3722), or www.generac.com with any
questions or concerns.
The owner is responsible for proper mainte-
nance and safe use of the equipment. Before
operating, servicing or storing this generator:
• Study all warnings in this manual and on
the product carefully.
• Become familiar with this manual and the
unit before use.
• Refer to the Assembly section of the man-
ual for instructions on final assembly proce-
dures. Follow the instructions completely.
Save these instructions for future reference.
ALWAYS supply this manual to any individual
that will use this machine.
THE INFORMATION CONTAINED HEREIN
WAS BASED ON MACHINES IN PRODUC-
TION AT THE TIME OF PUBLICATION. GEN-
ERAC RESERVES THE RIGHT TO MODIFY
THIS MANUAL AT ANY TIME.
Safety Rules
The manufacturer cannot anticipate every
possible circumstance that might involve a
hazard. The warnings in this manual, and on
tags and decals affixed to the unit are, there-
fore, not all inclusive. If using a procedure,
work method or operating technique that the
manufacturer does not specifically recom-
mend, verify that it is safe for others. Also
make sure the procedure, work method or
operating technique utilized does not render
the equipment unsafe.
Throughout this publication, and on tags and
decals affixed to the generator, DANGER,
WARNING, CAUTION and NOTE blocks are
used to alert personnel to special instructions
about a particular operation that may be haz-
ardous if performed incorrectly or carelessly.
Observe them carefully. Their definitions are
as follows:
NOTE: Notes contain additional information
important to a procedure and will be found
within the regular text of this manual.
These safety warnings cannot eliminate the
hazards that they indicate. Common sense
and strict compliance with the special instruc-
tions while performing the action or service
are essential to preventing accidents.
Safety Symbols and Meanings
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
000657
DANGER
Using a generator indoors CAN KILL YOU IN MINUTES.
Generator exhaust contains carbon monoxide. This is
a poison you cannot see or smell.
NEVER use inside a home
or garage, EVEN IF doors
and windows are open.
Only use OUTSIDE and
far away from windows,
doors, and vents.
(000103)
DANGER
Asphyxiation. Running engines produce carbon
monoxide, a colorless, odorless, poisonous gas.
Carbon monoxide, if not avoided,
will result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power source,
if not avoided, will result in death or serious injury.

2 Owner’s Manual for Portable Generator
• For safety reasons, it is recommended that
the maintenance of this equipment be per-
formed by an IASD. Inspect the generator
regularly, and contact the nearest IASD for
parts needing repair or replacement.
• Operate generator only on level surfaces
and where it will not be exposed to exces-
sive moisture, dirt, dust or corrosive vapors.
• When working on this equipment, remain
alert at all times.
• Never work on the equipment when physi-
cally or mentally fatigued.
• Never use the generator or any of its parts
as a step. Stepping on the unit can stress
and break parts, and may result in danger-
ous operating conditions from leaking
exhaust gases, fuel leakage, oil leakage,
etc.
Exhaust and Location Hazards
• If you start to feel sick, dizzy, or weak after
the generator has been running, move to
fresh air IMMEDIATELY. Seek medical
attention as you could have carbon monox-
ide poisoning.
Electrical Hazards
• The National Electric Code (NEC) requires
the frame and external electrically conduc-
tive parts of the generator be properly con-
nected to an approved earth ground. Local
electrical codes may also require proper
grounding of the generator. Consult with a
local electrician for grounding requirements
in the area.
• Use a ground fault circuit interrupter in any
damp or highly conductive area (such as
metal decking or steel work).
(000116)
DANGER
Electrocution. Turn utility and emergency
power supplies to OFF before connecting power
source and load lines. Failure to do so will result
in death or serious injury.
(000111)
WARNING
Moving Parts. Keep clothing, hair, and appendages
away from moving parts. Failure to do so could
result in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operting machine, do not
touch hot surfaces. Keep machine away from
combustables during use. Hot surfaces
could result in severe burns or fire.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
(000142)
Do not insert any object through the air cooling slots.
Generator can start at any time and could result in
death, serious injury, and unit damage.
WARNING
000406
(000103)
DANGER
Asphyxiation. Running engines produce carbon
monoxide, a colorless, odorless, poisonous gas.
Carbon monoxide, if not avoided,
will result in death or serious injury.
(000179a)
DANGER
The exhaust system must be properly maintained. Do
not alter or modify the exhaust system as to render it
unsafe or make it noncompliant with local codes and/or
standards. Failure to do so will result in death
or serious injury.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
(000178a)
Asphyxiation. Always use a battery operated carbon
monoxide alarm indoors and installed according to
the manufacturer’s instructions. Failure to do so
could result in death or serious injury.
WARNING
(000144)
DANGER
Electrocution. Contact with bare wires,
terminals, and connections while generator
is running will result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power source,
if not avoided, will result in death or serious injury.
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.

Owner’s Manual for Portable Generator 3
Fire Hazards
• Do not operate the generator if connected
electrical devices overheat, if electrical out-
put is lost, if engine or generator sparks or if
flames or smoke are observed while unit is
running.
• Keep a fire extinguisher near the generator
at all times.
Standards Index
1. National Fire Protection Association
(NFPA) 70: The NATIONAL ELECTRIC
CODE (NEC) available from www.nfpa.org
2. National Fire Protection Association
(NFPA) 5000: BUILDING CONSTRUC-
TION AND SAFETY CODE available from
www.nfpa.org
3. International Building Code available from
www.iccsafe.org
4. Agricultural Wiring Handbook available
from www.rerc.org, Rural Electricity
Resource Council P.O. Box 309 Wilming-
ton, OH 45177-0309
5. ASAE EP-364.2 Installation and Mainte-
nance of Farm Standby Electric Power
available from www.asabe.org, American
Society of Agricultural & Biological Engi-
neers 2950 Niles Road, St. Joseph, MI
49085
6. C22.2 100-14 Electric motors and genera-
tors for installation and use, in accordance
with the Rules of the Canadian Electrical
Code
This list is not all inclusive. Check with the
Authority Having Jurisdiction (AHJ) for any
local codes or standards which may be appli-
cable to your jurisdiction.
(000130)
WARNING
Accidental Start-up. Disconnect the negative battery
cable, then the positive battery cable when working
on unit. Failure to do so could result in death
or serious injury.
(000105)
DANGER
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Add fuel in a well
ventilated area. Keep fire and spark away. Failure to
do so will result in death or serious injury.
(000166)
DANGER
Do not overfill fuel tank. Fill to 1/2 in. of top of tank to
allow for fuel expansion. Overfilling may cause fuel to
spill onto engine causing fire or explosion, which will
result in death or serious injury.
(000174)
DANGER
Risk of fire. Allow fuel spills to completely dry
before starting engine. Failure to do so will
result in death or serious injury.
(000142)
Do not insert any object through the air cooling slots.
Generator can start at any time and could result in
death, serious injury, and unit damage.
WARNING

4 Owner’s Manual for Portable Generator
Section 2 General Information and Setup
Figure 2-1. Features and Controls
TABLE 1. Generator Components NOTE: Do not exceed the rated output of the
generator.
Figure 2-2. Control Panel
Figure 2-3. Unit Identification Label
000723
000721
1
4
6
5
7
8
3
9
12
11
10
2
1 Carrying Handle
2 Spark Plug Cover
3 Primer Bulb
4 Fuel Tank Cap
5 Control Panel
6AirIntakeSlats
7 Muffler
8 Choke
9 Left Side Service Cover
10 Vent Hoses
11 Fuel Shut Off
12 Recoil Starter
13 Low Oil Level LED (yellow)
14 Overload LED (red)
15 Ready LED (green)
16 12 VDC Plug
17 FlexPower™ Switch
18 12 VDC Circuit Breaker
19 Grounding Lug
20 120 VAC Receptacle
000724
13
18
20
19
17
16
14
15
000722

Owner’s Manual for Portable Generator 5
Know Your Generator
Replacement owner’s manuals are available
at www.generac.com.
Emissions Information
The Environmental Protection Agency (EPA)
(and California Air Resource Board (CARB)
for generators certified to CA standards)
requires that this generator comply with
exhaust and evaporative emission standards.
Locate the emissions compliance decal on the
engine to determine generator standards and
warranty details. This generator is certified to
operate on gasoline. The emission control
system may include the following compo-
nents:
• Air Induction System
– Intake Manifold
– Air Cleaner
• Fuel System
– Carburetor
– Fuel Tank
–FuelCap
– Fuel Lines
– Evaporative Vent Lines
– Carbon Canister
• Ignition System
–SparkPlug
– Ignition Module
• Exhaust System
– Exhaust Manifold
– Muffler
– Pulsed Air Valve
– Catalyst
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
TABLE 2. Product Specifications
1600 Watt
Engine Type Single Cylinder, 4-Stroke
Engine Size 99cc
Starter Type Recoil
Fuel Capacity/Type 0.69 gal (2.6L) Unleaded
Oil Capacity 0.63 qt (0.6L)
Run time at 25% Rated Load 5.7 Hours
Spark Plug Type NGK BPR7HS
Spark Plug Gap .030 in (0.762 mm)
Dimensions L x W x H 22 x 12 x 18 in (55.8 x 30.4 x 45.7 cm)
Weight Lb/kg 43.5/19.7
Maximum AC Output 1600 W
Surge AC Output 1650 W
AC Volts 120 VAC
Rated AC Current 13.3 Amp
Frequency 60 Hz
THD 3.0%
Insulation Class Class B
Outlets 5-15R (2), 12 VDC (1)
DC Volts 12 VDC
Rated DC Current 5 Amp

6 Owner’s Manual for Portable Generator
2000 Watt (49 State)
Engine Type Single Cylinder, 4-Stroke
Engine Size 127cc
Starter Type Recoil
Fuel Capacity/Type 0.85 gal (3.2L) Unleaded
Oil Capacity 0.63 qt (0.6L)
Run time at 25% Rated Load 5.3 Hours
Spark Plug Type NGK BPR6ES
Spark Plug Gap .030 in (0.762 mm)
Dimensions L x W x H 22 x 12 x 18 in (55.8 x 30.4 x 45.7 cm)
Weight Lb/kg 49.6/22.5
Maximum AC Output 2000 W
Surge AC Output 2200 W
AC Volts 120 VAC
Rated AC Current 16.7 Amp
Frequency 60 Hz
THD 3.0%
Insulation Class Class B
Outlets 5-20R (2), 12 VDC (1)
DC Volts 12 VDC
Rated DC Current 5 Amp
2000 Watt (50 State)
Engine Type Single Cylinder, 4-Stroke
Engine Size 127cc
Starter Type Recoil
Fuel Capacity/Type 0.82 gal (3.1L) Unleaded
Oil Capacity 0.63 qt (0.6L)
Run time at 25% Rated Load 4.7 Hours
Spark Plug Type NGK BPR6ES
Spark Plug Gap .030 in (0.762 mm)
Dimensions L x W x H 22 x 12 x 18 in (55.8 x 30.4 x 45.7 cm)
Weight Lb/kg 49.6/22.5
Maximum AC Output 2000 W
Surge AC Output 2200 W
AC Volts 120 VAC
Rated AC Current 16.7 Amp
Frequency 60 Hz
THD 3.0%
Insulation Class Class B
Outlets 5-20R (2), 12 VDC (1)
DC Volts 12 VDC
Rated DC Current 5 Amp
TABLE 2. Product Specifications

Owner’s Manual for Portable Generator 7
Add Engine Oil
Add recommended engine oil as shown in the
following chart.
NOTE: Use petroleum based oil (supplied) for
engine break-in before using synthetic oil.
.
1. Place generator on a level surface.
2. Remove the Left Side Service Cover.
3. Remove oil fill cap (A) located on bottom
of engine crankcase. See Figure 2-4.
4. Add recommended engine oil. The full
level is the base of the threads in the filler
neck (B). DO NOT OVERFILL!
5. Replace oil fill cap and hand-tighten.
Figure 2-4. Add Engine Oil
Fuel
Fuel requirements are as follows:
• Clean, fresh, unleaded gasoline.
• Minimum rating of 87 octane/87 AKI (91
RON).
• Up to 10% ethanol (gasohol) is acceptable
(where available; non-ethanol-premium fuel
is recommended).
• DO NOT use E85.
• DO NOT use a gas oil mix.
• DO NOT modify engine to run on alternate
fuels. Stabilize fuel prior to storage.
1. Verify unit is OFF and cooled for a mini-
mum of two minutes prior to fueling.
2. Place unit on level ground in a well venti-
lated area.
3. Clean area around fuel cap and remove
cap slowly (A). See Figure 2-5.
4. Add recommended fuel to 2 inches below
top (B). Do not overfill. See Figure 2-5.
5. Install fuel cap.
Figure 2-5. Add Recommended Fuel
NOTE: Allow spilled fuel to evaporate before
starting unit.
IMPORTANT NOTE: It is important to pre-
vent gum deposits from forming in fuel
system parts such as the carburetor, fuel
hose or tank during storage. Alcohol-
blended 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 the Storage section.
Never use engine or carburetor cleaner
products in the fuel tank as permanent
damage may occur.
(000135)
CAUTION
Engine damage. Verify proper type and quantity of
engine oil prior to starting engine. Failure to do so
could result in engine damage.
10W-30
SAE 30
Synthetic 5W-30
000729
000730
A
B
(000105)
DANGER
Explosion and Fire. Fuel and vapors are
extremely flammable and explosive. Add fuel
in a well ventilated area. Keep fire and spark
away. Failure to do so will result in death
or serious injury.
(000166)
DANGER
Do not overfill fuel tank. Fill to 1/2 in. of top of tank to
allow for fuel expansion. Overfilling may cause fuel to
spill onto engine causing fire or explosion, which will
result in death or serious injury.
000728
A
B

8 Owner’s Manual for Portable Generator
Section 3 Operation
Operation and Use Questions
Call Generac customer service at 1-888-GEN-
ERAC (1-888-436-3722) with questions or
concerns about equipment operation and
maintenance.
Before Starting Engine
1. Verify engine oil level is correct.
2. Verify fuel level is correct.
3. Verify unit is secure on level ground, with
proper clearance and is in a well ventilated
area.
Prepare Generator for Use
Know Generator Limits
Overloading a generator can result in damage
to the generator and connected electrical
devices. Observe the following to prevent
overload:
• Add up the total wattage of all electrical
devices to be connected at one time. This
total should NOT be greater than the gener-
ator's wattage capacity.
• The rated wattage of lights can be taken
from light bulbs. The rated wattage of tools,
appliances, and motors can be found on a
data label 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 only a few seconds
when starting such motors. Make sure to
allow for high starting wattage when select-
ing electrical devices to connect to the gen-
erator:
1. Figure the watts needed to start the largest
motor.
2. Add to that figure the running watts of all
other connected loads.
The Wattage Reference Guide is provided to
assist in determining how many items the gen-
erator can operate at one time.
NOTE: All figures are approximate. See data
label on appliance for wattage requirements.
Table 3. Wattage Reference Guide
Asphyxiation. Running engines produce
carbon monoxide, a colorless, odorless,
poisonous gas. Carbon monoxide, if not
avoided, will result in death or serious injury.
(000103)
DANGER
(000179a)
DANGER
The exhaust system must be properly maintained. Do
not alter or modify the exhaust system as to render it
unsafe or make it noncompliant with local codes and/or
standards. Failure to do so will result in death
or serious injury.
(000118)
DANGER
Risk of fire. Do not use generator without
spark arrestor installed. Failure to do so
could result in death or serious injury.
(000178a)
Asphyxiation. Always use a battery operated carbon
monoxide alarm indoors and installed according to
the manufacturer’s instructions. Failure to do so
could result in death or serious injury.
WARNING
(000110)
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces
could result in severe burns or fire.
(000136)
CAUTION
Equipment and property damage. Disconnect electrical
loads prior to starting or stopping unit. Failure to do so
could result in equipment and property damage.
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 (6-1/2") 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
*Dehumidifier 650

Owner’s Manual for Portable Generator 9
Transporting/Tipping of the Unit
Do not operate, store or transport the unit at
an angle greater than 15 degrees.
Using the FlexPower™ Switch
When the accessories connected to the gen-
erator are going to be used intermittently
(such as a hand drill), the FlexPower™ switch
can be pushed to the ON (I) position. This will
lower generator engine speed when loads are
not being applied, saving fuel, reducing
engine wear and extending runtime.
Starting Pull Start Engines
1. Unplug all electrical loads from the unit's
receptacles before starting engine.
2. Place generator on a level surface.
3. Turn the FlexPower Switch OFF (O).
4. Turn fuel valve to the ON. See Figure 3-6.
Figure 3-6.Fuel Valve ON
5. Press primer bulb (up to six (6) times). See
Figure 3-7.
Figure 3-7.Primer Bulb
6. Slide engine choke to Full Choke position
(right). See Figure 3-8.
Disc Sander (9") 1200
Edge Trimmer 500
Electric Blanket 400
Electric Nail Gun 1200
Electric Range (per element) 1500
Electric Skillet 1250
*Freezer 700
*Furnace Fan (3/5 HP) 875
*Garage Door Opener 500 to 750
Hair Dryer 1200
Hand Drill 250 to 1100
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 (hand-held) 150
Radio 50 to 200
*Refrigerator 700
Slow Cooker 200
*Submersible Pump (1-1/2 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.
(000183)
WARNING
Recoil Hazard. Recoil could retract unexpectedly.
Kickback could result in death or serious injury.
(000136)
CAUTION
Equipment and property damage. Disconnect electrical
loads prior to starting or stopping unit. Failure to do so
could result in equipment and property damage.
000725
000726

10 Owner’s Manual for Portable Generator
.
Figure 3-8.Choke Position
7. Firmly grasp recoil handle and pull slowly
until increased resistance is felt. Pull rap-
idly up and away.
8. When engine starts, move choke knob to
1/2-choke position until engine runs
smoothly, then to OFF position. If engine
falters, move choke back to 1/2-choke
position until engine runs smoothly, then to
OFF position.
NOTE: If engine fires, but does not continue to
run, move choke lever to Full Choke and
repeat starting instructions.
IMPORTANT NOTE: Do not overload the
generator. Also, do not overload individual
panel receptacles. If the Overload LED
(red) is lit attached devices stop operating,
stop engine. Reduce loads before restart-
ing engine. Read “Know Generator Limits”
carefully.
Generator Shut Down
1. Shut off all loads and unplug electrical
loads from generator panel receptacles.
2. Let engine run at no-load for several min-
utes to stabilize internal temperatures of
engine and generator.
3. Turn fuel valve to the OFF. See Figure 3-9.
.
Figure 3-9.Fuel Valve OFF
Low Oil Level Shutdown System
The engine is equipped with a low oil level
sensor that shuts down the engine automati-
cally when the oil level drops below a speci-
fied level. The engine will not run until the oil
has been filled to the proper level.
If the engine shuts down and there is sufficient
fuel, check engine oil level.
Using the 12 VDC Battery
Charger
The 12 VDC receptacle may be used to
recharge 12 VDC automotive batteries only.
The DC charging output is not regulated. The
circuit protector does not prevent over-
charging a battery.
1. Connect the charging cable to the genera-
tor first, then the battery. ALWAYS connect
the red lead to positive (+), and the black
to negative (-).
2. Keep the FlexPower™ switch in the OFF
(O) position.
3. Start generator and use as normal.
Charging time will vary with battery size
and condition. Check voltage at battery
terminals once the charging cable has
been unplugged, or generator has been
shut down.
NOTE: This receptacle cannot recharge 6 Volt
batteries and cannot be used to crank an
engine having a discharged battery.
000727
(000136)
CAUTION
Equipment and property damage. Disconnect electrical
loads prior to starting or stopping unit. Failure to do so
could result in equipment and property damage.
000725
(000137a)
WARNING
(000163)
WARNING
Risk of burn. Battery contains electrolyte solution
which can cause burns and blindness.
If electrolyte contacts skin or eyes, flush with
water and seek immediate medical attention.
(000138a)
WARNING
(000167)
CAUTION
Do not make battery connections
in reverse. Doing so will result in
equipment damage.

Owner’s Manual for Portable Generator 11
Section 4 Maintenance and Troubleshooting
Maintenance Recommendations
Regular maintenance will improve perfor-
mance and extend generator life. See a quali-
fied dealer for service.
Generator warranty does not cover items sub-
jected to operator abuse or negligence. To
receive full warranty value, operator must
maintain generator as instructed in this man-
ual, including proper storage as detailed in
Winter Storage and Long Term Storage.
NOTE: Call 1-888-GENERAC (1-888-436-
3722) with questions about component
replacement.
Maintenance Schedule
Follow maintenance schedule intervals,
whichever occurs first according to use.
NOTE: Adverse conditions will require more
frequent service.
NOTE: All required service and adjustments
should be each season as detailed in the fol-
lowing chart.
Preventive Maintenance
Dirt or debris can cause improper operation
and equipment damage. Clean generator
daily or before each use. Keep area around
and behind muffler free from combustible
debris. Inspect all cooling air openings on
generator.
• Use a damp cloth to wipe exterior surfaces
clean.
• Use a soft bristle brush to loosen caked on
dirt, oil, etc.
• Use a vacuum 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 openings on generator.
These openings must be kept clean and
unobstructed.
NOTE: DO NOT use a garden hose to clean
generator. Water can enter engine fuel system
and cause problems. If water enters generator
through cooling air slots, some water will be
retained in voids and crevices of rotor and sta-
tor winding insulation. Water and dirt buildup
on generator internal windings will decrease
insulation resistance of windings.
Engine Maintenance
Engine Oil Recommendations
Add recommended engine oil as shown in the
following chart.
NOTE: Use petroleum based oil (supplied) for
engine break-in before using synthetic oil.
.
At Each Use
Check engine oil level
Every 100 Hours or Every Season*
Change oil ǂ
Clean air filter**
Every 6 Months
Check spark plug
Check muffler
Every Season
Replace spark plug
Replace fuel filter
Inspect/clean spark arrestor
ǂChange oil after first 5 hours of operation,
then every season.
* Change oil and oil filter every month when
operating under heavy load or in high tem-
peratures.
** Clean more often under dirty or dusty oper-
ating conditions. Replace air filter parts if
they cannot be adequately cleaned.
(000142)
Do not insert any object through the air cooling slots.
Generator can start at any time and could result in
death, serious injury, and unit damage.
WARNING
(000141)
WARNING
Accidental start-up. Disconnect spark plug wires
when working on unit. Failure to do so could result
in death or serious injury.
10W-30
SAE 30
Synthetic 5W-30
000729

12 Owner’s Manual for Portable Generator
Change Engine Oil
When using generator under extreme, dirty,
dusty conditions, or in extremely hot weather,
change oil more frequently.
NOTE: Don’t pollute. Conserve resources.
Return used oil to collection centers.
Change oil while engine is still warm from run-
ning, as follows:
1. Place generator on a level surface.
2. Remove the Left Side Service Cover.
3. Remove oil fill cap (A) located on bottom
of engine crankcase. See Figure 4-1.
4. Tip unit and drain oil completely into a suit-
able container.
5. Add recommended engine oil. The full
level is the base of the threads in the filler
neck (B). DO NOT OVERFILL!
6. Install oil fill cap, and finger tighten.
7. Wipe up any spilled oil.
8. Properly dispose of oil in accordance with
all applicable regulations.
Figure 4-1. Add Engine Oil
Air Filter
Engine will not run properly and may be dam-
aged if run with a dirty air filter. Service air fil-
ter more frequently in dirty or dusty conditions.
To service air filter:
1. See Figure 4-2. Remove the Left Side Ser-
vice Cover screw (A) and remove cover
(B).
2. Remove filter housing cover (C).
3. Remove air filter (D) and wash in soapy
water. Squeeze filter dry in clean cloth (DO
NOT TWIST).
4. Clean air filter cover before installing.
NOTE: To order a new air filter, contact the
nearest IASD at 1-888-GENERAC (1-888-
436-3722).
Figure 4-2. Air Filter Assembly
Service Spark Plug
To service spark plug:
1. Remove spark plug cover (A). See Figure
4-3.
2. Pull spark plug lead from spark plug (B).
3. Use a socket wrench and remove spark
plug.
4. Install new spark plug into cylinder head
and tighten to 15 ft/lb (20.3 Nm).
5. Replace the spark plug lead, making sure
it is fully seated.
6. Replace spark plug cover.
Figure 4-3. Spark Plug
Inspect Muffler and Spark
Arrester
NOTE: It is a violation of California Public
Resource Code, Section 4442, to use or oper-
ate the engine on any forest-covered, brush-
covered, or grass-covered land unless the
exhaust system is equipped with a spark
arrester, as defined in Section 4442, main-
tained in effective working order. Other states
or federal jurisdictions may have similar laws.
Contact original equipment manufacturer,
retailer, or dealer to obtain a spark arrester
designed for exhaust system installed on this
engine.
NOTE: Use ONLY original equipment replace-
ment parts.
(000141)
WARNING
Accidental start-up. Disconnect spark plug wires
when working on unit. Failure to do so could result
in death or serious injury.
000730
A
B
000731
B
C
A
D
000733
A
B

Owner’s Manual for Portable Generator 13
Inspect muffler for cracks, corrosion, or other
damage. Remove spark arrester, if equipped,
inspect for damage or carbon blockage.
Replace parts as required.
Inspect Spark Arrester Screen (50
State)
1. Remove clamp (A) and screen retainer
(B). See Figure 4-4.
2. Slide spark arrestor screens (C) out from
muffler outlet (D).
3. Inspect screens and replace if torn, perfo-
rated or otherwise damaged. Do NOT use
a defective screen. If screens are not dam-
aged, clean with commercial solvent.
4. Replace screens (C) and retainer (B) and
secure with clamp (A).
Figure 4-4. Spark Arrestor Screen
Replace Fuel Filter
Locate fuel filter just below engine intake
housing. See Figure 4-5. Make sure fuel shut-
off is OFF (O).
1. Remove the pinch clamps from fuel filter
(A) and pull hoses free.
2. Replace used filter.
3. Push fuel hoses onto barbed filter fittings
until they seat completely.
4. Replace clamps making sure they are
seated on the fittings.
Figure 4-5. Replace Fuel Filter
Storage
General
It is recommended to start and run the genera-
tor for 30 minutes, every 30 days. If this is not
possible, refer to the following list to prepare
unit for storage.
• DO NOT place a storage cover on a hot
generator. Allow unit to cool to room tem-
perature before storage.
• DO NOT store fuel from one season to
another unless properly treated.
• Replace fuel container if rust is present.
Rust in fuel will cause fuel system prob-
lems.
• Cover unit with a suitable protective, mois-
ture resistant cover.
• Store unit in a clean and dry area.
• Always store generator and fuel away from
heat and ignition sources.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces
could result in severe burns or fire.
000735
A
B
C
D
(000168)
DANGER
Explosion and Fire. Fuel and vapors are
extremely flammable and explosive. Keep fire
and spark away. Failure to do so will result
in death or serious injury.
000732
A
(000143)
DANGER
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Store fuel in a well
ventilated area. Keep fire and spark away. Failure
to do so will result in death or serious injury.
(000109)
WARNING
Risk of Fire. Verify machine has properly
cooled before installing cover and storing
machine. Hot surfaces could result in fire.

14 Owner’s Manual for Portable Generator
Prepare Fuel System for Storage
Fuel stored over 30 days can go bad and
damage fuel system components. Keep fuel
fresh, use fuel stabilizer.
If fuel stabilizer is added to fuel system, pre-
pare and run engine for long term storage.
Run engine for 10-15 minutes to circulate sta-
bilizer throughout fuel system. Adequately
prepared fuel can be stored up to 24 months.
NOTE: If fuel has not been treated with fuel
stabilizer, it must be drained into an approved
container. See Figure 4-6. Run engine until it
stops from lack of fuel. Use of fuel stabilizer in
fuel storage container is recommended to
keep fuel fresh.
Figure 4-6. Carburetor Drain Valve
1. Change engine oil.
2. Remove spark plug.
3. Pour tablespoon (5-10cc) of clean engine
oil or spray a suitable fogging agent into
cylinder.
4. Pull starter recoil several times to distrib-
ute oil in cylinder.
5. Install spark plug.
6. Pull recoil slowly until resistance is felt.
This will close valves so moisture cannot
enter engine cylinder. Gently release
recoil.
Change Oil
Change engine oil before storage. See
Change Engine Oil.
A
000734
(000181)
WARNING
Vision Loss. Eye protection is required to avoid
spray from spark plug hole when cranking engine.
Failure to do so could result in vision loss.

Owner’s Manual for Portable Generator 15
Troubleshooting
PROBLEM CAUSE CORRECTION
Engine won't start. 1. No fuel in tank.
2. Fuel valve turned off.
3. Defective spark plug.
4. Plugged fuel filter.
5. Defective or stuck engine stop
switch.
1. Add fuel to tank.
2. Turn fuel valve on.
3. Replace spark plug.
4. Replace fuel filter.
5. Replace engine start switch.
Engine starts, then shuts
down.
1. Low fuel level.
2. Fuel tank vent closed.
3. Incorrect engine oil level.
4. Contaminated fuel.
5. Defective low oil level switch.
6. Defective ignition coil.
1. Add fuel to tank.
2. Open fuel tank vent.
3. Check engine oil level. Add or
drain as needed.
4. Replace fuel filter.
5. Replace low oil level switch.
6. Replace ignition coil.
Engine starts, then runs
rough.*
1. Choke is stuck or left on.
2. Dirty or clogged air filter.
3. Defective or dirty spark plug.
4. Dirty fuel filter.
5. Defective EcoMode switch.
1. Turn choke off.
2. Clean or replace the air filter
element.
3. Replace spark plug.
4. Replace fuel and fuel filter.
5. Replace EcoMode switch.
No AC output. 1. Generator overloaded (Over-
load LED is on and Ready
LED is flashing. See Figure 2-
2).
2. AC voltage is low (Overload
LED is on and Ready LED is
flashing. See Figure 2-2).
3. Inverter module overheated
(Overload LED is on and
Ready LED is flashing. See
Figure 2-2).
4. Short circuit in electrical
device (Overload LED is on
and Ready LED is flashing.
See Figure 2-2).
5. Defective inverter assembly.
1. Shut down generator to reset
module. Reduce loads and
restart generator.
2. Verify the choke is OFF.
3. Verify service door is ON. Let
cool for 15 minutes and start
generator.
4. Check condition of extension
cords and items being pow-
ered.
5. Replace inverter assembly.
No DC output. ** 1. DC circuit breaker is open.
2. Defective DC circuit breaker.
3. Defective rectifier.
1. Reset DC circuit breaker.
2. Replace DC circuit breaker.
3. Replace rectifier.
Fuel leaks from drain
hoses.
1. Fuel system over primed
(flooded).
2. Carburetor drain in bowl is not
closed.
1. Let generator sit 15 minutes
before starting.
2. Turn valve clockwise to close.
* Engine speed increases and decreases — This is normal as the generator starts up and as loads
vary.
** Verify EcoMode Switch is OFF.

16 Owner’s Manual for Portable Generator
Notes

Owner’s Manual for Portable Generator 17

Part No. 0J9694 Rev. G 08/20/15
Printed in USA
©2015 Generac Power Systems, Inc. All rights
reserved
Specifications are subject to change without notice.
No reproduction allowed in any form without prior
written consent from Generac Power Systems, Inc.
Generac Power Systems, Inc.
S45 W29290 Hwy. 59
Waukesha, WI 53189
1-888-GENERAC (1-888-436-3722)
generac.com