A-iPower SUA4000i Inverter Generator Owner's Manual

Model: SUA4000i

Brand: A-iPower

Introduction

This Operating Manual is designed to instruct you on the correct operation of your A-iPOWER product. Your satisfaction and safe operation are our ultimate concern. Please take the time to read the entire manual, especially the Safety Precautions, to avoid potential hazards.

! Read this manual carefully before operating this generator. This manual should stay with this generator if it is sold.

Safety Instructions and Warnings

! DANGER: Using a generator indoors CAN KILL YOU IN MINUTES. Exhaust contains carbon monoxide, a poison gas you cannot see or smell.

! WARNING: This product can expose you to chemicals including arsenic and lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

! WARNING: Engine exhaust contains carbon monoxide, a poisonous gas that could kill you in minutes. You CANNOT smell it, see it, or taste it. Even if you do not smell exhaust fumes, you could still be exposed to carbon monoxide gas.

! WARNING: Fuel and its vapors are extremely flammable and explosive, which could cause burns, fire, or explosion resulting in death or serious injury and/or property damage.

! WARNING: Starter cord kickback (rapid retraction) will pull hand and arm toward engine faster than you can let go, which could cause broken bones, fractures, bruises, or sprains resulting in serious injury.

! WARNING: Generator voltage could cause electrical shock or burn resulting in death or serious injury.

! WARNING: Exhaust heat/gases could ignite combustibles, structures or damage fuel tank causing a fire.

! WARNING: Unintentional sparking could cause fire or electric shock resulting in death or serious injury.

! WARNING: Starter and other rotating parts could entangle hands, hair, clothing, or accessories resulting in serious injury.

! WARNING: Excessively high operating speeds could result in minor injury. Excessively low operating speeds impose a heavy load.

NOTE: Exceeding generators wattage/amperage capacity could damage generator and/or electrical devices connected to it.

NOTE: Improper treatment of generator could damage it and shorten its life.

WARNING: Medical and Life Support Uses.

Key Specifications

Model NO.SUA4000i
Starting Wattage4000W
Running Wattage3500W
PhaseSingle
Frequency60Hz
VoltageAC 120V
Amperage29.2A
Engine Type4-stroke, OHV, single cylinder with forced air cooling system
Engine Displacement223cc
Fuel Tank Capacity2.6 US gallon (10.0 L), 87 octane minimum
Oil Capacity20.2 fl. oz. (0.6 L)
100% Load Running Time5.0h
50% Load Running Time7.0h
Noise Level58dBA

Know Your Generator

Generator Components

The generator has several key components:

Control Panel

The control panel features various controls and indicators:

  1. Fuel Switch: Controls fuel flow.
  2. Choke: Aids in starting the engine, especially when cold.
  3. Parallel Operation Outlets: For connecting two A-iPOWER generators with a parallel kit for increased output.
  4. Indicator Light: Shows output status, overload alarm, and low oil alert.
  5. DC Circuit Breaker (9A): Protects DC circuits.
  6. DC 12V Outlets (8A): For DC power output.
  7. Grounding Nut: For connecting the generator to a grounding wire to reduce electric shock risk.
  8. AC 120V NEMA 5-20 Duplex Receptacles (20A): Standard outlets for 120V devices.
  9. AC 120V NEMA L5-30 Receptacle (30A): A higher amperage 120V outlet.
  10. Engine Switch: Turns the engine ON or OFF.
  11. Low Idle Mode: Engages to save fuel and reduce noise when the load is below 75%.
  12. DC 5V USB Outlets (1.5A): For charging USB devices.
  13. Data Center: Displays Voltage, Run Time, Frequency, Power, and Fuel level.
  14. Main Breaker (30A): Main circuit protection.
  15. AC Circuit Breaker for NEMA 5-20R (20A): Protects specific AC outlets.

Low Idle Switch

The Low Idle Switch regulates engine speed and fuel consumption based on the electrical load, reducing fuel use and noise. Use only when the load is less than 75% of rated watts.

Parallel Operation

Connect two A-iPOWER generators using a parallel kit to double the available power. Follow instructions included with the kit.

Circuit Breakers

Circuit breakers protect individual AC and DC circuits. They will trip if outlets are overloaded. Reset by turning off the device and pressing the breaker.

Connecting Electrical Devices

CAUTION: Ensure devices are compatible with the generator's voltage (120V, 60 Hz, single phase AC). DO NOT connect 50Hz or 3-phase loads.

  1. Allow the generator to run for a few minutes to stabilize output before connecting devices.
  2. Connect the highest wattage device first, ensuring it is turned OFF. Turn the device ON and allow the generator to stabilize.
  3. Repeat for additional devices, connecting and stabilizing one at a time.

Generator Capacity

Ensure the generator can supply enough running (rated) and starting (max.) watts for all connected items. Starting wattage is the temporary surge needed for motors.

Example Calculation: Total Running Watts + Highest Additional Starting Watts = Total Starting Watts Needed.

NOTICE: Do not overload the generator's capacity.

Common Electrical Device Wattage Requirements

Tool or ApplianceRated (Running) WattsSurge (Starting) Watts
Hot plate25000
Electric stove (each element)1500-28000
Saw - circular15001500
Window air conditioner12001800
Saw - miter12001200
Microwave10000
Well water pump10001000
Sump pump8001200
Refrigerator freezer8001200
Furnace blower8001300
Computer8000
Electric drill600900
Television5000
Stereo4000
Box fan300600
Security system1800
Common light bulb750

Generator Preparation

Step 1 - Add/Check Oil

The generator is shipped without oil. Add the correct amount (20.2 fl. oz. / 0.6 L) before first use.

  1. Place generator on a level surface, engine OFF.
  2. Remove the oil access cover and oil dipstick.
  3. Using a funnel, slowly add oil to the oil fill until it reaches the upper fill line.
  4. Reinstall the dipstick and tighten. Wipe any spilled oil.
  5. Reinstall the oil access cover.

NOTE: Used engine oil should be disposed of properly at an approved site.

For subsequent operation, check oil level before each use or every 8 hours. The generator has a low-oil sensor.

Step 2 - Add/Check Fuel

! GASOLINE WARNING: Keep generator away from open flame. Gasoline vapors are flammable and explosive.

Use ONLY fresh (within 30 days), lead-free gasoline with a minimum of 87 octane rating. Ethanol-free gasoline is preferred. DO NOT use gasoline with over 10% ethanol. Fuel tank capacity is 2.6 US gallons (10.0 L). DO NOT mix oil with gasoline.

NOTICE: Never use old gasoline or oil/gasoline mixtures. Avoid dirt/water in the fuel tank. Gasoline can age and make starting difficult. Store with fuel for no more than 2 months.

Step 3 - Ground the Generator

To reduce the risk of electric shock, properly ground the generator.

Tighten the grounding nut on the front control panel against a grounding wire (e.g., No. 12 AWG stranded copper wire). Connect the other end to a grounding rod driven into the earth.

WARNING: Failure to properly ground increases the risk of electric shock.

High Altitude Operation Above 3000 Feet

Operation at altitudes above 3000 feet may require an altitude kit for optimal performance and emissions. Contact an authorized service center for details.

Starting the Generator

Before starting, ensure generator is outside, grounded, has sufficient oil and fuel, and all electrical devices are unplugged.

  1. Turn the LOW IDLE switch to “OFF”.
  2. Turn the FUEL switch to the “ON” position.
  3. Pull the CHOKE LEVER out to the "START" position (skip if engine is warm).
  4. Turn the ENGINE switch to the “ON” position.
  5. Hold the generator, pull the recoil starter handle slowly until resistance is felt, then pull quickly. Return cord gently.
  6. When the engine starts, push the CHOKE LEVER in to the "RUN" position.

Shutting Off the Generator

CAUTION: Never stop the engine with electrical devices connected and running.

  1. Turn off all electrical devices before unplugging them.
  2. Allow the generator to run at no load for a few minutes to stabilize internal temperatures.
  3. Turn the ENGINE switch to the “OFF” position.
  4. Turn the FUEL switch to the “OFF” position.

WARNING: Allow the generator to cool down before touching hot parts.

CAUTION: Storing with fuel for extended periods (over 2 months) can make starting difficult.

Maintenance

Proper routine maintenance prolongs generator life. Always turn OFF the generator and allow it to cool before performing maintenance.

Recommended Maintenance Schedule

Maintenance ItemEach 8 hrs / DailyEvery 25 hrsEvery 3 mos / 50 hrsEvery 6 mos / 100 hrsBefore StorageAs Necessary
Engine OilCheck level (X)Replace (X*)X
Air FilterCheck (X*)Clean (X*)X
Spark PlugCheck/clean/regap (X)Change (X)X
Fuel TankCheck level (X)Drain (X)X
Carburetor (Auto Shutoff)Drain (X)XX
Carburetor (Manual Shutoff)Drain (X)XX
Spark ArrestorCheck/Clean (X)X
BatteryDisconnect (X)X

* Clean/change more often under dusty conditions or heavy load.

Important Generator Maintenance Tips:

NOTE: Failure to properly maintain the generator will void the warranty.

Air Filter Maintenance

Check every 50 hours. Clean the foam air filter element by washing in soapy water, drying, and adding a few drops of engine oil. Replace if damaged.

Spark Plug Maintenance

Ensure the spark plug is properly gapped (0.7 - 0.8 mm / 0.028 - 0.031 in) and clean. Replace if cracked, chipped, or worn.

Spark Arrestor Maintenance

Inspect and clean every 100 hours. Remove, clean carbon deposits with a brush, and reinstall. Replace if damaged.

Draining the Fuel Tank / Carburetor

To prevent gum deposits, drain fuel before storing.

  1. Place generator on an elevated platform.
  2. Remove maintenance cover.
  3. For fuel tank: Turn fuel switch to "ON". For carburetor: Turn fuel switch to "OFF".
  4. Locate the transparent drain tube from the carburetor.
  5. Direct the tube into a gasoline-storage container.
  6. Open carburetor drain screw and drain fuel. Tighten screw after draining.

NOTE: Drain carburetor before storing for long periods.

Draining/Changing Oil

Change oil according to the schedule, or more often under heavy load/high temperatures. Changing when warm allows complete drainage.

  1. Place generator on an elevated platform.
  2. Remove oil access cover.
  3. Place a container underneath to catch used oil.
  4. Remove the black rubber seal below the oil drain plug.
  5. Remove the oil fill cap/dipstick.
  6. Use a wrench to remove the oil drain plug and drain oil completely.
  7. Reinstall the oil drain plug and rubber seal.
  8. Refill with engine oil as per instructions.
  9. Reinstall dipstick and oil access cover.

NOTE: Never dispose of used engine oil in trash or down a drain. Contact a local recycling center or auto garage for proper disposal.

Transportation & Storage

Transporting the Generator

To prevent fuel spillage:

  1. Tighten fuel cap and turn vacuum relief valve to “OFF”.
  2. Set engine switch to “OFF”.
  3. Drain fuel tank if possible.
  4. Keep generator upright.

WARNING: Avoid direct sunlight inside a vehicle; high temperatures can cause fuel vaporization and explosion.

Storing the Generator

Shut off and cool the generator before storing. Do not place storage cover on a hot unit. Do not obstruct ventilation openings.

WARNING: Store upright in a cool, dry location away from heat, open flames, sparks, or pilot lights.

Product Disposal

Dispose of electrical/electronic components responsibly at a recycling facility. Do not dispose of used oil or fuel in trash or down a drain. Contact your local recycling center or auto garage for proper oil/fuel disposal.

Troubleshooting Guide

Engine Will Not Start

Possible CauseSolution
Battery not charged.Charge battery.
Engine switch in OFF position.Turn engine switch to ON.
No fuel.Fill fuel tank.
Stale gasoline or water in gasoline.Drain and refill with fresh fuel.
Engine oil level is low.Check and fill engine oil. (Low Oil Shutoff prevents starting).
Fuel-switch in OFF position.Turn fuel-switch to ON.
Spark plug faulty, fouled, or improperly gapped.Replace spark plug.
Engine stored improperly (stale fuel).Drain fuel, refuel with fresh gasoline.
Dirty fuel filter.Replace fuel filter or contact service center.

Engine Lacks Power

Possible CauseSolution
Dirty air filter.Clean or replace air filter.
Engine stored improperly (stale fuel).Drain fuel, refuel with fresh gasoline. Contact service center if problem persists.

AC Receptacle Does Not Work

Possible CauseSolution
OUTPUT indicator OFF, OVERLOAD indicator ON.Check AC load. Stop/restart engine. Check cooling air inlet.
AC Circuit protector(s) tripped.Check AC load and reset circuit protector(s).
GFCI system activated.Reset the GFCI.
Item plugged in is defective.Try a different item.

If problems persist, contact your nearest authorized service center.

Exploded View & Parts List

The generator is composed of numerous parts, detailed in the exploded view diagram and the parts list below. The exploded view visually represents how these parts assemble to form the generator.

Parts List

Part NO.DescriptionQty.Part NO.DescriptionQty.
1Engine130Invertor components1
2Seal, rubber strip131Flange bolt2
3Wiring ground132Muffler front cover1
4Alternator cover133Flange bolt6
5Flange bolt434Air outlet cover1
6Locating pin235Wheel assy2
7Stator assy136Circlip for shaft4
8Spring washer437Assembling bottom plate1
9Bolt438Bottom plate support1
10Rotor assy139Flange bolt4
11Flange nut140Shock absorb amount4
12Fan141Flange nut8
13Flat washer442Fixed plate1
14Spring washer443Flange bolt4
15Flange bolt444Fixed plate1
16Alternator wind scope145Oil tank mouth plastic set1
17Flange bolt446Sealant set1
18Alternator end cover147Shock absorb foot pad2
19Flange bolt448Flange bolt2
20Air inlet pipe149Clip nut10
21Engine support plate150Flange bolt8
22Flange bolt451Support2
23support plate152Support2
24Flange nut353Beam of fuel tank2
25Muffler exhaust cover154Flange bolt4
26Flange bolt155Handle assembly plate1
27Muffler washer256Flange bolt4
28Spring washer257Lock pin2
29Flange nut258Plug in pin2
59Telescope handle assy188Spring1
60Air inlet cover189Knob1
61Flange bolt690Fuel tank assy1
62Inverter191Washer4
63Inverter fixed support192Flange bolt4
64Flange bolt293Top cover1
65Handle assembly plate194Fuel tank plastic cover1
66Flange bolt395Cross-type screw4
67Clip nut396Oil level transparent block1
68Housing on the right197Fuel switch1
69Handle baffle198Flange bolt2
70Flange nut299Fixed plate1
71Flange bolt2100Flange bolt2
72Oil window cap1101Tapping screw3
73Knob1102Handle1
74Tapping screw3103Tapping screw1
75Handle end cover1104Air inlet back cover1
76Teel retailer for holes4105Cross-type screw1
77Alternator plastic cover1106Cross-type screw6
78Air outlet cover1107Fuel switch knob1
79Flange bolt6108Cross-type screw1
80Cross-type screw2109Battery1
81Battery protection plate1110wiring1
82Knob bolt1111wiring1
83Clip nut3112Battery strap1
84Housing on the left1113Fuel pipe1
85Flange bolt3
86Spring clip8
87Maintenance plastic cover1

Warranty Information

Limited Warranty

A-iPower Corp. warrants the product against defects in material and workmanship for 3 years from the date of purchase for Consumer use (residential household use) and 1 year for Commercial use (business, industrial, rental). The warranty covers repair, replacement parts, or replacement of defective components.

Warranty Registration: Register your product within 10 days of purchase by mail or online at www.a-ipower.com to ensure proper warranty coverage.

How to Obtain Warranty Service

Contact Customer Service at 855-888-3598 or support@a-ipower.com. Have your Model Number, Serial Number, and Proof of Purchase ready.

Warranty Exclusions

The warranty does not cover:

Warranty Limits and Consequential Damages

A-iPower is not liable for loss of time, use, freight costs, or other incidental/consequential damages. This warranty provides specific legal rights that may vary by state.

Merchandise Return Guidelines

A-iPOWER WARRANTY REGISTRATION FORM

Product registration is important for protection and customer service. Keep your original receipt.

Primary Information: Name, Phone, Email, Address, City, State, Zip code, Date of purchase, Where purchased.

Generator Information: Serial #, Model # (found on the engine).

Product Usage: Select intended use (Home back-up, Jobsite, Camping, etc.).

Product Type: Select if it's a First Time Purchase or Replacement.

How Did You First Learn of This Product: Select from options like Magazine Ad, Internet, Friend, etc.

Satisfaction Level: Rate satisfaction with Product Value, Performance, Features, Product Appearance, Warranty, Ease of Maintenance, and Noise Level.

Recommendation Likelihood: Rate how likely you are to recommend A-iPOWER to family or friends.

Privacy Statement: A-iPower collects data for marketing and product support, respecting personal data regulations.

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