WEN DF400I Super Quiet 4000-Watt Dual Fuel Inverter User Manual

IMPORTANT: Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,

ease of operation, and operator safety. When properly cared for, this product will supply you years of rugged,

trouble-free performance. Pay close attention to the rules for safe operation, warnings, and cautions. If you use

your tool properly and for its intended purpose, you will enjoy years of safe, reliable service.

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

TECHSUPPOR[email protected]1-800-232-1195 (M-F 8AM-5PM CST)

For replacement parts and the most up-to-date instruction manuals, visit WENPRODUCTS.COM

4000W DUAL FUEL

INVERTER GENERATOR

Instruction Manual

MODEL DF400i

CONTENTS

WELCOME 3

Speciﬁcations ................................................................................................... 3

Introduction ..................................................................................................... 4

SAFETY 5

Safety Information ........................................................................................... 5

Generator Safety Warnings .............................................................................. 6

Unpacking & Packing List ................................................................................ 9

Know Your Inverter Generator ........................................................................ 10

Generator Preparation .................................................................................... 12

BEFORE OPERATING

OPERATION & MAINTENANCE 20

Starting Your Generator ................................................................................. 20

Using Your Generator ..................................................................................... 23

Shutting Off Your Generator ........................................................................... 29

Maintenance ................................................................................................... 31

Transportation & Storage ............................................................................... 39

Troubleshooting Guide ................................................................................... 40

Wiring Diagram .............................................................................................. 41

Exploded View & Parts List ............................................................................ 42

Warranty Statement ....................................................................................... 53

To purchase accessories for your tool, visit WENPRODUCTS.COM

Magnetic Oil Dipstick (Model No. 55201)

WEN Parallel Connection Kit

Weatherproof Generator Cover (Model No. 56310iC)

High-Altitude Kit (Part No. DF400i-HA36 & DF400i-HA68)

SPECIFICATIONS

Rated Wattage

Gasoline: 3200 Watts; LPG: 2900 Watts

Surge Wattage Gasoline: 4000 Watts; LPG: 3200 Watts

Rated Voltage

AC: 120V

DC: 12V (Cigarette Lighter), 5V (USB)

Rated Amperage

AC: 26.6A (Total), 26.6A (TT-30R), 20A (5-20R)

DC: 10A (Total), 8A (Cigarette Lighter), 1A/2.1A (USB)

Phase Single

Frequency 60Hz

Decibel Rating 58 dBA (25% load from 22 feet away)

Product Dimensions

Length: 23.2 in. (590 mm)

Width: 18 in. (456 mm)

Height: 20.1 in. (511 mm)

Product Net Weight 100.0 lbs (45.5 kg)

GENERATOR

ENGINE

Engine Type 4-Stroke, OHV, Single Cylinder with Forced Air Cooling System

Engine Displacement 212cc

Engine Speed 3600 RPM

Fuel Tank Capacity 2.2 US Gallons (8.3 L), 87 Octane Minimum

Oil Capacity 18.6 ﬂ. oz. (0.55 L)

Half-Load Run Time 8.5 hours (gasoline); 9 hours (20 lb LPG tank)

Lubrication System Splash Lubrication

Spark Plug Type NGK BPR6ES / Torch F6RTC

Spark Plug Gap 0.7 - 0.8 mm (0.028 - 0.031 in.)

Spark Plug Torque 1/2 - 3/4 turn after gasket contacts base or 15 ft-lbs

Battery 12V, 1.6Ah, Lithium-Ion

INTRODUCTION

Thanks for purchasing the WEN 4000-Watt Dual-Fuel Inverter Generator. Refer to the illustration below for the loca-

tion of the serial number on the side of the engine. Record the generator information in the spaces provided below.

If assistance for information or service is required, please contact customer service by calling 1-800-232-1195, M-F

8-5 CST; you will be asked to provide the following generator information when calling.

Generator Model Number: DF400i

Date of Purchase: ______________________________________________

Purchased From: _______________________________________________

Serial Number: ________________________________________________

TO MAXIMIZE THE LIFESPAN OF YOUR GENERATOR: We recommend running your generator at least once a

month for 20 to 30 minutes. Start the generator according to the instructions and plug a small load in to make

sure the outlet is producing electricity.

SERVICE RECORD

Record the service dates of your generator in the chart below. Please perform maintenance checks and operations

according to the “Maintenance” section of the manual.

Service Record Date Date Date Date Date Date

Change Oil

Change Spark Plug

Clean Fuel Tank

Clean Air Cleaner

Clean Spark Arrestor

Serial NumberSerial Number

SAFETY INFORMATION

SAFETY INTRODUCTION

Safety is a combination of common sense, staying alert, and knowing how your tool works. This manual contains

important information regarding the generator’s potential safety concerns, as well as preparation, operation, and

maintenance instructions. Before operating this generator, be sure to read and observe all warnings and instructions

both on the generator labels and in this instruction manual. Failure to follow all instructions listed below may result

in personal injury.

NOTE: The following safety information is not meant to cover all possible conditions and situations that may occur.

WEN reserves the right to change this product and speciﬁcations at any time without prior notice.

At WEN, we are continuously improving our products. If you ﬁnd that your tool does not exactly match this manual,

please visit wenproducts.com for the most up-to-date manual or contact customer service at 1-800-232-1195, M-F

8-5 CST.

Keep this manual available to all users during the entire life of the tool and review it frequently to maximize

safety for both yourself and others.

SAVE THESE SAFETY INSTRUCTIONS.

SAFETY SYMBOLS

The purpose of following safety symbols is to attract your attention to possible dangers. The safety symbols, and

their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves

eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention

measures.

NOTICE REGARDING EMISSIONS

Engines that are certiﬁed to comply with U.S. EPA emission regulations for SORE (Small Off Road Equipment), are

certiﬁed to operate on regular unleaded gasoline, and may include the following emission control systems: (EM)

Engine Modiﬁcations and (TWC) Three-Way Catalyst (if so equipped).

QUESTIONS? PROBLEMS?

In order to answer questions and solve problems in the most efﬁcient and speedy manner, contact customer

service at 1-800-232-1195, M-F 8-5 CST or email [email protected].

DANGER: indicates a hazard, which, if not avoided, will result in death or serious injury.

WARNING: indicates a hazard, which, if not avoided, could result in death or serious injury.

CAUTION: indicates a hazard, which, if not avoided, might result in minor or moderate injury.

CAUTION! when used without the alert symbol, indicates a situation that could result in damage to the machine.

WARNING! Before operating the generator, make sure to read all safety warnings and all instructions. Failure

to follow the warnings and instructions may result in electric shock, ﬁre or serious injury.

GENERATOR SAFETY WARNINGS

DANGER! CARBON MONOXIDE

Using a generator indoors CAN KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide (CO). This

is a poison gas you cannot see or smell. If you can smell the generator exhaust, you are breathing CO. But even

if you cannot smell the exhaust, you could be breathing CO.

NEVER use a generator inside homes, garages, crawl spaces, or other partially enclosed areas. Deadly levels

of carbon monoxide can build up in these areas. Using a fan or opening windows and doors does NOT supply

enough fresh air. ONLY use a generator outside and far away from windows, doors, and vents. These openings

can pull in generator exhaust.

Even if you use a generator correctly, CO may leak into the home. ALWAYS use a battery-powered or battery-

backup CO alarm in the home. If you start to feel sick, dizzy, or weak after the generator has been running, move

to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.

WARNING! RISK OF EXPLOSION. HIGHLY FLAMMABLE: This generator may emit highly ﬂammable and

explosive gasoline vapors, which can cause severe burns or even death, if ignited. A nearby open ﬂame can lead

to explosion even if not directly in contact with gasoline.

• Do not operate near open ﬂame, heat, or any other ignition source. Do not smoke near the generator.

• Always operate on a ﬁrm, level surface.

• Always turn generator off before refueling. Allow generator to cool for at least 2 minutes before removing

fuel cap. Loosen cap slowly to relieve pressure in tank.

• Do not overﬁll fuel tank. Gasoline may expand during operation. Do not ﬁll to the top of the tank. Allow for

expansion. Always check for spilled fuel before operating.

• If fuel spills, move the generator at least 30 feet away from the spill and wipe clean any spilled fuel before

starting the engine.

• Empty fuel tank before storing or transporting the generator.

WARNING! If this generator is used as a supply for a building’s wiring system, the generator must be in-

stalled by a qualiﬁed electrician and connected to a transfer switch as a separately derived system in accordance

with all applicable laws and electrical codes and the National Electrical Code, NFPA 70. The generator shall be

connected to a transfer switch that switches all conductors excluding the equipment grounding conductor. The

frame of the generator shall be connected to an approved grounding electrode.

CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals and produces exhaust known

to the State of California to cause cancer, birth defects and other reproductive harm.

GENERATOR SAFETY WARNINGS

OPERATING ENVIRONMENT

1. Using a generator indoors can kill you in minutes.

Only use a generator outside and far away from win-

dows, doors and vents.

2. Do not smoke near the generator.

3. Do not operate near open ﬂame, heat, or ﬂammable

materials. This generator may emit highly ﬂammable

and explosive gasoline vapors, which can cause severe

burns or even death if ignited. A nearby open ﬂame can

lead to an explosion even if it isn’t directly in contact with

gasoline.

4. Do not expose the generator to rainy or wet con-

ditions; doing so signiﬁcantly increases the risk of

electrical shock. Never handle the generator, electronic

devices, or any cord while standing in water, while bare-

foot, or when hands or feet are wet.

5. Always operate the generator on a dry, ﬁrm, level

surface.

6. The generator should have at least 5 feet of clear-

ance from buildings or other equipment during opera-

tion.

7. Do not allow children or non-qualiﬁed persons to

operate the generator.

GENERATOR PREPARATION

1. Always ground the generator before using it to maxi-

mize safety (see “Ground the Generator” section).

2. Do not overﬁll fuel tank, as gasoline may expand

during operation. Do not ﬁll to the very top of the tank.

Leave room for gasoline expansion. Always check for

spilled fuel before operating.

3. If any part of the generator, electrical device or pow-

er cord is broken, damaged, or defective, make sure

it is repaired or replaced before operation. Service

should only be performed by a qualiﬁed technician. Do

not use receptacles or cords that show signs of damage,

such as broken or cracked insulation.

4. Use a ground fault circuit interrupter (GFCI) in highly

conductive areas such as metal decking or steel work.

Extension cords with in-line GFCIs are recommended for

these operations to maximize safety.

5. If connecting the generator to a building’s electri-

cal system for standby power, you MUST consult a

qualiﬁed electrician and install a transfer switch. Such

connections must comply with local electrical laws and

codes. Failure to comply can create a back-feed, which

may result in serious injury or death to utility workers.

6. Never modify the generator in any way. Modifying

or using the machine for any other purpose for which it

is not designed may result in serious injuries, machine

damage and voiding of the warranty.

GENERATOR OPERATION

1. Only use the generator for its intended purposes.

Modifying or using the generator for operations for

which it was not designed may cause hazards and per-

sonal injury.

2. Do not touch bare wires or receptacles (outlets).

3. Do not exceed the wattage capacity of the generator

by plugging in more electrical devices than the unit

can handle. This could damage the generator and/or

connected electrical devices. Check the operating volt-

age and frequency requirements of all electrical devices

prior to plugging them into the generator.

Generator safety warnings continue on the next page.

WARNING! Do not let comfort or familiarity with the product replace strict adherence to product safety rules.

Failure to follow the safety instructions may result in serious personal injury.

GENERATOR SAFETY WARNINGS

WARNING! Do not let comfort or familiarity with the product replace strict adherence to product safety rules.

Failure to follow the safety instructions may result in serious personal injury.

4. Allow generator to run for several minutes before

connecting electrical devices. Do not start or stop en-

gine with electrical devices plugged in to the receptacles.

Failure to do so could damage the generator and/or con-

nected electrical devices.

5. Do not turn on electrical devices until after they are

connected to the generator.

6. Generators vibrate in normal use. During and after

the use of the generator, inspect both the generator as

well as extension and power supply cords for damage

resulting from vibration.

7. Do not touch hot parts. This generator produces heat

when running. Temperatures near exhaust can exceed

150ºF (65ºC). Allow generator to cool down after use be-

fore touching engine or areas of the generator that be-

come hot during use.

8. Turn off all connected electrical devices before stop-

ping the generator.

9. Always turn generator off before refueling. Allow

generator to cool for at least 2 minutes before removing

fuel cap. Loosen cap slowly to relieve pressure in tank.

10. Turn the engine switch to “OFF” position when the

engine is not running.

11. Empty fuel tank before storing or transporting the

generator. Do not store generator or gasoline near fur-

naces, water heaters, or any other appliances that pro-

duce heat or have automatic ignitions. Store the genera-

tor and fuel away from sparks, open ﬂames, pilot lights,

heat and other sources of ignition.

12. Always wash hands after handling generator.

CAUTION: Misuse of this generator can damage it or

shorten its lifespan.

TO MAXIMIZE THE LIFESPAN OF YOUR GENERATOR: We recommend running your generator at least once a

month for 20 to 30 minutes. Start the generator according to the instructions and plug a small load in to make

sure the outlet is producing electricity. If you do not run it often, it will greatly shorten the generator’s lifespan

and void the warranty.

Assembly Tools

Spark Arrestor Tools Accessories

UNPACKING

With the help of a friend or trustworthy foe, such as one of your in-laws, carefully remove the generator from the

packaging and place it on a sturdy, ﬂat surface. Make sure to take out all contents and accessories. Do not discard

the packaging until everything is removed. Check the packing list below to make sure you have all of the parts and

accessories. If any part is missing or broken, please contact customer service at 1-800-232-1195 (M-F 8-5 CST),

or email [email protected].

PACKING LIST

UNPACKING & PACKING LIST

Components

Generator

WrenchHandle

Funnel Cup

Funnel Tube

Screwdriver

14mm / 17mm

Wrench

19mm Wrench

8mm / 10mm

Wrench

Regulator

Hose Assembly

100%

50%

100%

50%

VOLTAGE FREQUENCY TIME

FUELLOAD

KNOW YOUR INVERTER GENERATOR

TOOL PURPOSE

Inverter Generators provide you with clean and quiet power, when and where you need it most. Refer to the fol-

lowing diagrams to become familiarized with all the parts and controls of your Generator. The components will be

referred to later in the manual for assembly and operation instructions.

GENERATOR

Fuel Cap

Carrying Handle

Control Panel

Battery Access

Transport Handle

Recoil Start

Oil Access Cover

Ventilation Slots

Overload Indicator (Red)

Output Indicator

(Green) Low Oil Indicator (Yellow)

Fuel IndicatorLoad Indicator

Digital Display

(Voltage, Frequency, Run Time, Maintenance Alert at 50 hours)

KNOW YOUR INVERTER GENERATOR

CONTROL PANEL

1 4

89101213

1. Data Meter with Indicator Light

2. Eco-Mode Switch

Turn ON to increase fuel economy and runtime when the

load is below 2400W.

3. Overload Reset

If the overload light is ON, press this button to reset.

4. Parallel Connection Port

Connect two WEN inverter generators through a parallel

connection kit for a higher output.

5. DC 5V USB Outlet

6. DC 12V Cigarette-Lighter Style Receptacle

7. LPG Inlet

2 3

8. Grounding Nut

Ground generator to reduce risk of electric shock.

9. DC Circuit Breaker (10A)

10. AC 120V NEMA TT-30 Receptacle

11. AC Circuit Breaker (20A)

12. AC 120V NEMA 5-20R Receptacles

13. Engine Switch

Start and shut down the engine (see p. 21).

14. 2-in-1 Switch

Turn switch to choke, run, and automatically shut off the

generator.

GENERATOR PREPARATION

REMOVING THE MOUNTING PLATES

Your generator is shipped with four mounting plates that secure the engine to the generator housing in order to

prevent machine damage during shipping. Make sure to remove the four mounting plates before operating your

generator. Failure to do so could lead to engine damage.

To remove the mounting plates:

1. With the help of another person, place generator on an elevated platform such as table or workbench. Make sure

the generator is stable. Do not tilt the generator as there may be remaining oil inside the crankcase from testing.

2. Remove the four nuts (Fig. 1 - 3) and mounting plates (Fig. 1 - 2) from the generator's baseplate (Fig. 1 - 1).

3. Follow the instructions in the following pages to prepare your generator for starting.

Fig. 1

Synthetic 5W-30

30W

10W-30

GENERATOR PREPARATION

The following section describes the necessary steps to prepare the generator for use. If you are unsure about how

to perform any of the steps, please call (800) 232-1195 M-F 8-5 CST for customer service. Failure to perform these

steps properly can damage the generator or shorten its life.

STEP 1 - ADD / CHECK OIL

The generator is shipped without oil. User must add the proper amount of oil before operating the generator for the

ﬁrst time. The oil capacity of the engine crankcase is 18.6 ﬂ. oz. (0.55 L).

• 30W Engine Oil

Temperatures above 40°F

• 10W-30 Engine Oil

Temperatures between 0°F - 40°F

• Synthetic 5W-30 Engine Oil

All temperature ranges

ENGINE OIL RECOMMENDATIONS

Select good quality detergent oil bearing the American Petroleum Institute (API) service classiﬁcations

SJ, SL, or SM (synthetic oils may be used). Select the SAE viscosity grade of oil that matches the

expected operating temperature.

°F

°C

-20 0 20 32 40 60 80 100

40200

-20

-10

-30 30

To add oil, follow these steps:

1. Place the generator on a level surface. Make sure the en-

gine is off before adding or checking oil.

CAUTION: Keep the generator level! Tilting the generator

to assist in ﬁlling will cause oil to ﬂow into the wrong

areas of the engine and cause damage.

2. Turn the oil access cover knob to the unlocked position,

and remove the access cover from the side panel. Unscrew

the oil dipstick from the engine (Fig. 2).

3. Using an oil funnel or appropriate dispenser, slowly add

oil into the oil ﬁll, being careful not to overﬁll the unit. Fill the

crankcase to the upper ﬁll line so you can visually see the oil

coming halfway up the oil ﬁll threads (Fig. 3).

4. Reinstall the oil dipstick and ﬁrmly tighten it. Wipe clean

any spilled oil.

5. Reinstall the oil access cover. Turn the oil access cover

knob to the locked position to secure the cover in place.

Fig. 2

Upper Level

Fill Line

Lower Level

Fill Line

Lower Level

Fill Line

Fig. 3

100%

50%

100%

50%

FUELLOAD

VOLTAGE FREQUENCY TIME

GENERATOR PREPARATION

STEP 1 - ADD / CHECK OIL (CONTINUED)

For subsequent operation, the oil level should be checked before each use, or after every 8 hours of operation. The

generator is equipped with a low-oil sensor and will not start without a sufﬁcient amount of oil.

To check oil level (before every subsequent start):

1. Place the generator on a level surface. Make sure the engine is off before adding or checking oil.

2. Open the oil access cover. Remove and wipe the dipstick with a clean rag.

3. Insert the dipstick into the oil ﬁll without screwing it in. Remove the dipstick to check the oil mark (Fig. 4).

If the oil mark covers less than one half of the dipstick, slowly add oil until the oil mark reaches to the top of the

dipstick (or when you can see the oil coming halfway up the oil ﬁll threads).

4. Wipe clean any oil leaks and ﬁrmly tighten the dipstick. Reinstall the oil access cover.

OIL LEVEL SHUTDOWN

To protect the unit from damage, the generator is equipped

with a low-oil-pressure shutoff that will automatically stop

the engine when the oil level is too low. The yellow low oil

indication light (Fig. 5) will turn ON to remind you that the

engine oil level is low and need to be reﬁlled.

The oil level of the engine should be checked before each

start to ensure that the engine crankcase contains suf-

ﬁcient lubricant.

TIP: Your WEN generator is compatible with the WEN

55201 Magnetic Oil Dipstick (not included), available

for purchase at wenproducts.com. The dipstick’s in-

dustrial-strength magnetic tip will collect metal shav-

ings from your generator’s oil compartment to help

preserve the engine and extend your generator’s lifes-

pan.

Lower Limit

Upper Limit

Low Oil Indicator

Fig. 4

Fig. 5

GENERATOR PREPARATION

WARNING! RISK OF EXPLOSION. HIGHLY FLAMMABLE: This generator may emit highly ﬂammable and

explosive gasoline vapors, which can cause severe burns or even death, if ignited. A nearby open ﬂame can lead

to explosion even if not directly in contact with gasoline.

• Do not operate near open ﬂame, heat, or any other ignition source. Do not smoke near the generator.

• Always operate on a ﬁrm, level surface.

• Always turn generator off before refueling. Allow generator to cool for at least 2 minutes before removing

fuel cap. Loosen cap slowly to relieve pressure in tank.

• Do not overﬁll fuel tank. Gasoline may expand during operation. Do not ﬁll to the top of the tank. Allow for

expansion. Always check for spilled fuel before operating.

• If fuel spills, move the generator at least 30 feet away from the spill and wipe clean any spilled fuel before

starting the engine.

• Empty fuel tank before storing or transporting the generator.

STEP 2 - ADD / CHECK FUEL

Use ONLY fresh (within 30 days from purchase), lead-free gasoline with a minimum of 87 octane rating. The genera-

tor performs best with ethanol-free gasoline. DO NOT use gasoline with over 10% ethanol. The capacity of the fuel

tank is 2.2 US gallons (8.3 L). Do not mix oil with gasoline.

To add gasoline:

1. Make sure the generator is shut OFF and on a level sur-

face. Unscrew the fuel cap (Fig. 6) and set it aside. The fuel

cap may be tight and hard to unscrew.

2. Slowly add unleaded gasoline to the fuel tank. Be careful

not to overﬁll.

NOTE: Do not ﬁll the fuel tank to the very top. If you do so,

gasoline will expand and spill during use, even with the fuel

cap in place.

3. Reinstall fuel cap and wipe clean any spilled gasoline with

a dry cloth.

To check fuel level:

During operation, the fuel level will be displayed by the in-

dicator lights on the right side of the multi-meter. If the fuel

level is low, reﬁll the fuel tank before starting your generator

for the next time.

IMPORTANT:

• Avoid getting dirt or water into the fuel tank.

• Keep gasoline away from sparks, open ﬂames,

pilot lights, heat, and other sources of ignition.

• Gasoline can age in the tank and make starting

difﬁcult. Never store the generator for more

than 2 months with fuel in the tank.

• Never use an oil/gasoline mixture.

• Never use old gasoline.

Fig. 6

Fuel Cap

FUEL OPTION A: GASOLINE

GENERATOR PREPARATION

STEP 2 - ADD / CHECK FUEL (CONTINUED)

FUEL OPTION B: LIQUID PETROLEUM GAS (LPG)

To connect your generator to an LPG cylinder:

1. Take off the safety caps from the cylinder valve, generator mounted

regulator, and regulator connecting hose ends.

2. With the LPG tank valve closed, attach the LPG regulator connecting

hose to the valve. Turn the plastic coupling from the hose right (clock-

wise) to tighten hose assembly onto the LPG tank (Fig. 7).

3. Remove the protective rubber cover from the LPG inlet (Fig. 8 -

1) on the generator panel. Connect the nut on the other end of the

regulator connecting hose to the LPG inlet. Tighten the nut using the

included 19mm wrench. Turn the 2-in-1 dial switch to OFF.

4. Turn the LPG tank valve ON (Fig. 9) and check for leaks by spraying

soapy water to check connections. If bubbles appear, become larger

in size, or increase in number, a leak exists. This MUST be corrected

before using generator. Contact WEN customer service at 1-800-232-

1195, M-F 8-5 CST, or email [email protected] for as-

sistance.

NOTE: You can use Teﬂon (or other tape) to secure the connection of

the LPG hose to your generator.

NOTE: If you would like to purchase other accessories for your dual-

fuel generator, consult your local dealer of propane and propane ac-

cessories, I tell you what.

CAUTION! Always position the LPG cylinder so the connection

between the tank and LPG inlet won’t cause sharp bends or kinks

in the hose.

WARNING! Risk of burns. Contact with liquid contents of cyl-

inder will cause freeze burns to the skin. If liquid contents contacts

skin or eyes, seek immediate medical attention.

WARNING! When transporting and storing, keep cylinder secured in an upright position with cylinder valve

turned off. Keep cylinders ventilated and away from heat when in a vehicle.

Fig. 7

Fig. 8

Fig. 9

AUTO FUEL SELECTION

Your generator is equipped with Auto Fuel Selection Technology. What this means is that the generator will auto-

matically select the fuel source (LPG or gasoline) depending on availability. LPG is prioritized; this means that if a

propane tank with enough LPG is connected, the generator will automatically use LPG. If no propane tank is con-

nected, or if there is not enough LPG remaining in the tank, the generator will use gasoline (if there is gasoline in the

fuel tank). Refer to Table 1 below for information on how to set up your generator for a particular fuel.

GENERATOR PREPARATION

Propane tank valve 2-in-1 dial on generator

I want to use gasoline. Closed Run

I want to use LPG. Open Run* or Off

Table 1 – Auto Fuel Selection® chart.*It is ideal to run the generator on LPG with the fuel valve closed (OFF), but if

it stays open (RUN), the generator will still run properly.

NOTE: Make sure the generator can handle the load(s) you plan to connect. The generator can provide more power

when running on gasoline than on LPG. Consult the speciﬁcations table on p. 3, as well as page 23 (“Calculating the

Wattage of Your Device(s)”) to ensure that your load(s) will not exceed the rated wattage for a particular fuel. See

also "Switching Fuels" (p. 25) for more information.

ABOUT THE BATTERY

1. The lithium-ion battery supplied with your generator is only partially charged, in order to maximize its service

life. The battery may not have enough charge to start the engine during its ﬁrst use. If this is the case, connect the

battery according to the instructions below, and start the generator using the recoil starter, according to the instruc-

tions below. The battery will receive charge when the generator is running.

2. Lithium-ion batteries are subject to a natural aging process. The battery must be replaced at the latest when its

capacity falls to just 80% of its capacity when new. Weakened cells in an aged battery are no longer capable of meet-

ing the high power requirements needed for the proper operation of your generator, and therefore pose a safety risk.

3. DO NOT INCINERATE BATTERY. Do not throw the battery into an open ﬁre as this poses a risk of explosion. Do

not ignite the battery or expose it to ﬁre.

4. AVOID DAMAGE AND SHOCKS. Immediately replace batteries that have been dropped from a height of more than

one meter (3 feet) or those that have been exposed to violent shocks, even if the housing of the battery appears to

be undamaged. The battery cells inside the battery may have suffered serious damage. In such instances, please

read the waste disposal information on p. 38 for proper battery disposal.

5. DO NOT CRUSH, DROP OR DAMAGE BATTERY. Do not use the battery if it has sustained a sharp blow, been

dropped, run over or has been damaged in any way (e.g. pierced with a nail, hit with a hammer, stepped on, etc.).

6. DO NOT DISASSEMBLE. Incorrect reassembly may pose a serious risk of electric shock, ﬁre or exposure to toxic

battery chemicals. If battery or charger are damaged, call WEN customer service at 1-800-232-1195 for assistance.

7. DO NOT SHORT CIRCUIT. Batteries will short circuit if a metal object makes a connection between the positive

and negative contacts on the battery. Do not place the battery near anything that may cause a short circuit, such as

paper clips, coins, keys, screws, nails and other metallic objects. A short-circuited battery poses a risk of ﬁre and

severe personal injury. NOTE: The safe temperature range for charging the battery is 25°F – 104°F.

The generator is shipped with the lithium-ion battery’s negative (-) terminal disconnected to maximize safety. To

start the generator using electric start, the battery must be connected.

STEP 3 - CONNECT THE BATTERY

WARNING! Use only genuine WEN batteries with your generator (part no. 56380i-1304). Use of other bat-

teries may induce premature product failure and could pose a safety risk.

GENERATOR PREPARATION

STEP 3 - CONNECT THE BATTERY (CONTINUED)

WARNING! Use only genuine WEN batteries with your generator (part no. 56380i-1304). Use of other bat-

teries may induce premature product failure and could pose a safety risk.

Fig. 10

To connect the battery:

1. Using a coin or ﬂat-head screwdriver (not included), turn the screw

(Fig. 10 - 1) on the battery access cover (Fig. 10 -2) and remove the

cover.

2. Pull downwards on the rubber belt (Fig. 11 - 1). With your other hand,

free the metal buckle from the hook beneath the battery.

3. Pull the battery outwards until the negative terminal (Fig. 12 - 1) is

accessible. Pull back the cover (Fig. 12 - 2) from the black cable (Fig.

12 - 3). Connect the black cable onto the battery’s negative terminal and

replace the cover.

NOTE: The generator’s positive terminal has already been connected.

Double check that the positive terminal’s connection is secure.

4. Slide the battery back into the generator. Pull downwards on the rub-

ber belt (Fig. 13 - 1). With your other hand, latch the metal buckle onto

the hook beneath the battery.

5. Reinstall the battery access cover (Fig. 14 - 1) using a coin or ﬂat-

head screwdriver (not included) to turn the screw (Fig. 14 - 2).

IMPORTANT: If you do not plan to use the generator for an extended pe-

riod of time, we recommend DISCONNECTING the negative battery cable

from the battery. This will protect the battery from losing its charge. Af-

ter disconnecting the negative cable, cover the free end of the cable with

an insulator such as electrical tape. Alternatively, you can use a trickle

charger (not included) to maintain battery charge. If you choose to do

so, make sure the trickle charger is suitable for lithium-ion batteries.

Fig. 11

Fig. 12

Fig. 13

Fig. 14

GENERATOR PREPARATION

STEP 4 - GROUND THE GENERATOR

To reduce the risk of electric shock and to maximize safety, the genera-

tor should be properly grounded.

Ground the generator by tightening the grounding nut (Fig. 15 - 1) on

the front control panel against a grounding wire. A generally acceptable

grounding wire is a No. 12 AWG (American Wire Gauge) stranded cop-

per wire.

This grounding wire should be connected at the other end to a copper,

brass, or steel grounding rod that is driven into the earth. Wire and

grounding rods are not included with the generator.

NOTE: Grounding codes can vary by location. Contact a local electri-

cian to check the area codes.

WARNING! Failure to properly ground the generator increases your risk of electric shock.

HIGH ALTITUDE OPERATION ABOVE 3000 FEET

The fuel system on this generator may be affected by operation at high altitudes. Proper operation can be ensured by

installing an altitude kit at altitudes higher than 2000 feet above sea level. At elevations above 7000 feet, the engine

may experience a decrease in performance, even with the proper altitude kit. Operating this generator without said

kit may increase the engine’s emissions and decrease both fuel economy and performance.

You can order the kit at wenproducts.com by searching part DF400i-HA. There are two kits - one for altitudes be-

tween 3000 and 6000 feet (part no. DF400i-HA36), and the other for altitudes from 6000 to 8000 feet (part no.

DF400i-HA68). This kit should be installed by a qualiﬁed mechanic. Refer to the instructions included with your

altitude kit for more information about installation.

NOTE: The high altitude kit must be installed for operation above 2000 feet, regardless of the fuel source (LPG or

gasoline) used.

WARNING! To prevent serious injury from ﬁre, follow the kit installation procedures in a well-ventilated

area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before

proceeding. Do not smoke near the generator. Warranty will be void if adjustments are not made for high altitude

use.

CAUTION: Engines with the high-altitude kit installed operated at lower altitudes could cause severe engine dam-

age and affect emissions compliance. Be sure to uninstall the high altitude kit when operating at altitudes below

2000 feet.

After completing the above preparation, the generator is ready to be started.

Fig. 15

CAUTION!

Disconnect all electrical loads from the generator before attempting to start.

Before starting the generator, make sure you have read and performed the steps in the “Generator Preparation”

section of this manual. If you are unsure about how to perform any of the steps in this manual please call 1-(800)

232-1195 M-F 8-5 CST for customer service.

To maximize safety, ALWAYS ground the generator before using it. See section “Ground the Generator”.

Use a ground fault circuit interrupter (GFCI) in highly conductive areas such as metal decking or steel work. GFCIs

are available in-line with some extension cords.

STARTING YOUR GENERATOR

DANGER! CARBON MONOXIDE

Using a generator indoors CAN KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide (CO). This

is a poison gas you cannot see or smell. If you can smell the generator exhaust, you are breathing CO. But even

if you cannot smell the exhaust, you could be breathing CO.

NEVER use a generator inside homes, garages, crawl spaces, or other partially enclosed areas. Deadly levels

of carbon monoxide can build up in these areas. Using a fan or opening windows and doors does NOT supply

enough fresh air. ONLY use a generator outside and far away from windows, doors, and vents. These openings

can pull in generator exhaust.

Even if you use a generator correctly, CO may leak into the home. ALWAYS use a battery-powered or battery-

backup CO alarm in the home. If you start to feel sick, dizzy, or weak after the generator has been running, move

to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.

WARNING! The exhaust from this product contains chemicals known to the State of California to cause

cancer, birth defects, or other reproductive harm.

WARNING! Do not operate generator near open ﬂame or ﬂammable materials This generator may emit

highly ﬂammable and explosive gasoline vapors, which can cause severe burns or even death if ignited. A

nearby open ﬂame can lead to explosion even if it isn’t directly in contact with gasoline. Do not smoke near the

generator.

WARNING! This generator produces powerful voltage, which can result in electrocution.

WARNING! Do not use in rainy or wet conditions. Do not touch bare wires or receptacles (outlets). Do not

allow children or non-qualiﬁed persons to operate.

WARNING! Generator should only be connected to electrical devices, either directly or with an extension

cord. NEVER connect to a building electrical system without a qualiﬁed electrician and connected to a transfer

switch as a separately derived system. Such connections must comply with local electrical laws and codes.

Failure to comply can create a back-feed, which may result in serious injury or death to utility workers.

Follow the instructions on the next page to start your generator.

ON OFF

ECO-MODE

STARTING YOUR GENERATOR

BEFORE STARTING THE GENERATOR

1. Verify that generator is outside on a dry, level surface with at least two feet of clearance on all sides.

2. To maximize safety, check that the generator is properly grounded (see “Ground the Generator”).

3. Check there is sufﬁcient level of oil in the crankcase. Add oil if necessary (see “Add / check Oil”).

4. If using gasoline, make sure there is enough gasoline in fuel tank. Add fuel if necessary (see "Add / check Fuel").

If using LPG, make sure there is enough propane in tank, and that tank and regulator hose are properly connected.

5. Make sure all electrical devices are unplugged from the generator during ignition. Otherwise it will be difﬁcult for

the engine to start.

STARTING THE GENERATOR (GASOLINE)

1. Turn the ECO-MODE (Fig. 16) switch to “OFF” during starting.

2. Turn the 2-in-1 dial switch (Fig. 17) to the "CHOKE" position.

NOTE: If starting the generator with a warm engine, turn the dial

switch to the “RUN” position.

Option A: Electric Start

3. Push engine switch to START (II) position for 2-3 seconds,

or until the engine starts. Then release the switch (Fig. 16).

NOTE: If the engine does not start, release the switch and try

again. Keeping the switch in the START position too long can

damage the starter.

NOTE: The lithium-ion battery is shipped partially charged, in

order to maximize its service life, and may not have enough

charge to start the engine during the ﬁrst use of the generator.

If you have trouble starting the generator the ﬁrst time using

electric start, use the pull start option and allow the generator

to run for a few hours to charge the battery.

4. When engine starts, turn dial switch to the “RUN” position.

NOTE: If you have repeated failed attempts to start the engine, please consult the troubleshooting guide (page 40).

If problems persist, please call please call 1-(800) 232-1195 M-F 8-5 CST.

Option B: Pull Start

3. Push the engine switch to the ON (I) position. Place one

hand on the generator to hold it in place, and pull on the recoil

starter handle slowly until a slight resistance is felt (Fig. 18).

Then pull quickly to start the engine. Return cord gently into

the machine. Never allow the cord to snap back.

4. If engine fails to start (with gas), repeat step 3; If engine

fails to start (with LPG), turn the 2-in-1 dial switch to the "RUN"

position, then pull on the recoil starter handle to get started.

Fig. 16

Fig. 17

Fig. 18

5. After engine has started, turn 2-in-1 switch to the “RUN” position. The output indicator light (green) will light up.

6. Allow the generator to run for several minutes before attempting to connect any electrical devices. This allows the

generator to stabilize its speed and temperature.

ON OFF

ECO-MODE

STARTING YOUR GENERATOR

STARTING THE GENERATOR (LPG)

1. Turn the ECO-MODE (Fig. 19) switch to “OFF” during starting.

2. Turn the 2-in-1 dial switch (Fig. 20) to the "CHOKE" position.

3. Push the engine switch (Fig. 19) to the ON (I) position.

4. Prime the engine.

To do this, do one of the following:

a. Manual start: pull the recoil starter 1 – 3 times.

b. Electric: push the engine switch to the START (II) position for

about 1 second, 1 – 3 times.

5. Turn the 2-in-1 switch to RUN.

NOTE: If you have repeated failed attempts to start the engine, please consult the troubleshooting guide (page 40).

If problems persist, please call please call 1-(800) 232-1195 M-F 8-5 CST.

7. After the engine has started, the output indicator light (green) will light up.

8. Allow the generator to run for several minutes before attempting to connect any electrical devices.

This allows the generator to stabilize its speed and temperature.

Fig. 19

Fig. 20

Fig. 21

Option A: Electric Start

6. Push engine switch to START (II) position for 2-3 seconds,

or until the engine starts. Then release the switch (Fig. 19).

NOTE: If the engine does not start, release the switch and try

again. Keeping the switch in the START position too long can

damage the starter.

NOTE: The lithium-ion battery is shipped partially charged, in

order to maximize its service life, and may not have enough

charge to start the engine during the ﬁrst use of the generator.

If you have trouble starting the generator the ﬁrst time using

electric start, use the pull start option and allow the generator

to run for a few hours to charge the battery.

Option B: Pull Start

6. Push the engine switch to the ON (I) position. Place one

hand on the generator to hold it in place, and pull on the recoil

starter handle slowly until a slight resistance is felt (Fig. 21).

Then pull quickly to start the engine. Return cord gently into

the machine. Never allow the cord to snap back.

USING YOUR GENERATOR

CALCULATING THE WATTAGE OF YOUR DEVICE(S)

Connect electrical devices running on AC current according to their wattage requirements. Calculate the total run-

ning wattage and starting wattage of the device(s) you wish to connect, and MAKE SURE that they are within the

capacity of your generator and the capacity of each individual outlet.

Generator

Wattage

Capacity

GENERATOR RUNNING (RATED) WATTS GENERATOR STARTING (SURGE) WATTS

Gasoline: 3200W Gasoline: 4000W

LPG: 2900W LPG: 3200W

What this means:

The generator can produce a maximum of

3200W / 2900W on a continuous basis to

supply ongoing power to your electronic de-

vices.

NOTE: Also check the rated amperage for

each outlet and make sure not to overload

the individual outlets.

What this means:

Some devices such as box fans require short

bursts of extra power in addition to the rated

wattage listed by the device to start their mo-

tors.

The generator can produce a maximum watt-

age of 4000W / 3200W for a short period of

time (seconds) to cover the extra starting

power required by your electronic devices.

Electronic

Device

Wattage

Calculation

Find the wattage information of each device you plan to connect. The information should be

listed on the device or in its instruction manual, or you may refer to page 22, Table 2.

The wattage can be calculated using this equation: Watts = Volts x Amperes

To calculate the total running watts of your

devices:

+ Add up the running wattages of all the

device(s) you plan to connect.

= The total running (rated) wattage.

This wattage should NOT exceed the run-

ning wattage of 3200W / 2900W

It is recommended to maintain a load at or

below 2880 / 2610W (90% of the rated out-

put) to ensure steady voltage output and to

prolong the generator’s lifespan.

To calculate the total starting watts of your

devices:

+ Add up the total running wattage of all the

device(s) you plan to connect.

+ Add the single highest ADDITIONAL start-

ing wattage out of the device(s) you plan to

connect.

= The total starting (surge) wattage.

This wattage should NOT exceed the starting

wattage of 4000W / 3200W.

If any of either of the total calculated running watts or starting watts is higher than the capac-

ity of your generator, adjust the load until both wattage requirements are met. Otherwise you

will overload the generator, and cause damage to the engine and your electrical device(s).

Table 1 - How to Calculate Wattages

USING YOUR GENERATOR

CALCULATING THE WATTAGE OF YOUR DEVICE(S) - CONTINUED

The chart below serves as a reference for the estimated wattage requirements of common electrical devices. How-

ever, do not solely rely on this chart - all electronics and appliances are built differently. Always check the wattage

listed on the electrical device before consulting this chart.

Tool or Appliance Rated (Running) Watts Surge (Starting) Watts

Electric Water Heater (40 Gal) 4000 0

Hot Plate 2500 0

Saw - Radial Arm 2000 2000

Electric Stove (Each Element) 1500-2800 0

Saw - Circular 1500 1500

Air Compressor (1 HP) 1500 3000

Window Air Conditioner 1200 1800

Saw - Miter 1200 1200

Microwave 1000 0

Well Water Pump 1000 1000

Sump Pump 800 1200

Refrigerator Freezer 800 1200

Furnace Blower 800 1300

Computer 800 0

Electric Drill 600 900

Television 500 0

Deep Freezer 500 500

Garage Door Opener 480 0

Stereo 400 0

Box Fan 300 600

Clock Radio 300 0

Security System 180 0

Dvd Player / VCR 100 0

Common Light Bulb 75 0

Table 2 - Estimated Wattages of Common Electrical Appliances

NOTE: Become familiar with the functions and capacity of each component on the control panel before con-

necting electrical devices. See page 23 for more information about the components of the control panel. Do not

overload generator or individual panel receptacles. Do not connect 50Hz or 3-phase loads to the generator.

USING YOUR GENERATOR

CONNECTING ELECTRICAL DEVICES

When the rated wattage requirement of each electrical device has been determined, add these numbers to ﬁnd the

total rated wattage needed. If this number exceeds the rated wattage (3200 / 2900W) of the generator, DO NOT con-

nect all these devices. Select a combination of electrical devices with a total rated wattage lower than or equal to the

rated wattage of the generator.

CAUTION! Become familiar with the markings on the control panel before connecting electrical devices. Do

not connect 3-phase or 50Hz loads to the generator.

1. Before connecting electrical devices, allow the generator to run for a few minutes to stabilize the speed and volt-

age output.

2. Make sure that all devices are turned off. Start plugging in each electric device, from the highest wattage to the

lowest. Check the power indicator light (green) to ensure the generator is producing power.

3. Do not overload the generator or individual panel receptacles. If an overload occurs, the overload indication light

(red) will activate. If it is ﬂashing, turn off and unplug one load. If it is solid (not ﬂashing), the generator will cut

off power to protect itself. Unplug all electrical devices and then press the reset button to reset the entire circuit,

or press the circuit breaker to reset the DC circuit. Check the total wattage of the devices and reduce the load if it

exceeds the capacity of the generator. Then, plug the loads back in one by one.

NOTE: If the reset button or circuit breaker does not reset, wait several minutes and try again. If problem still per-

sists, please call 1-(800) 232-1195 M-F 8-5 CST, or email [email protected].

USING YOUR GENERATOR

Table 3 - Power Cord Requirement Guide

SOME NOTES ABOUT POWER CORDS

Long or thin cords can drain the power provided to an electrical device by the generator. When using such cords,

allow for a slightly higher rated wattage requirement by the electrical device.

*NR = Not Recommended

Device Requirements Max. Cord Length (ft) by Wire Gauge

Amps Watts

(120V)

Watts (240V) #8 wire #10 wire #12 wire #14 wire #16 wire

2.5 300 600 NR NR NR 375 250

5 600 1200 NR NR 300 200 125

7.5 900 1800 NR 350 200 125 100

10 1200 2400 NR 250 150 100 50

15 1800 3600 NR 150 100 65 NR

20 2400 4800 175 125 75 50 NR

25 3000 6000 150 100 60 NR NR

30 3600 7200 125 65 NR NR NR

40 4800 9600 90 NR NR NR NR

WARNING! Generator should only be connected to electrical devices, either directly or with an extension

cord. NEVER CONNECT TO A BUILDING ELECTRICAL SYSTEM without a qualiﬁed electrician and connected to

a transfer switch as a separately derived system. Such connections must comply with local electrical laws and

codes. Failure to comply can create a back-feed, which may result in serious injury or death to utility workers.

NOTE: For power outages, permanently installed, stationary generators are better suited for providing backup

power to your home. Even a properly connected portable generator can become overloaded. This may result in

overheating or stressing the machine’s components, possibly leading to generator failure.

SWITCHING FUELS

Your generator is equipped with Auto Fuel Selection technology. To maximize your generator's lifespan, we recom-

mend removing all loads from the generator before switching between gasoline and LPG. If this is not possible,

reduce loads as much as possible in order to ensure a smooth switch. Your generator is rated to handle a higher

load when running on gasoline than on LPG, so keep this in mind when planning your fuel usage.

USING YOUR GENERATOR

ECO-MODE SWITCH

This generator is equipped with an Eco-Mode Idle Control Switch

(Fig. 22). Engaging this switch allows the system to regulate the

engine speed and automatically adjust its fuel consumption to

match the required load. When the electrical load changes, the

generator engine will automatically speed up and slow down as

needed. This reduces fuel consumption and noise levels, while

extending runtime and engine’s lifespan.

Keep this switch engaged ONLY when the power load requirement is less than 2400W. Do not engage the Eco-Mode

Switch when the total load is more than 2400W. The generator engine must run at full speed to supply power for

anything over 2400W.

PARALLEL OPERATION

The parallel connection ports (Fig. 23) allow you to connect two

WEN generators to increase the total available electrical power.

The WEN Parallel Connection Kit can be purchased from

wenproducts.com. Follow the instructions included with your

parallel connection kit for proper installation and operation.

IN CASE OF OVERLOAD

If your generator becomes overloaded from too much drawn

wattage, the overload indicator (red) on the control panel will

light up. Follow the instructions below when an overload occurs:

• When you’re close to overloading the generator, the overload

light will start to ﬂash. Reduce the load by turning off and dis-

connecting your electronic device(s) until the overload light turns

off. Then you may continue to operate your generator.

• When you’ve overloaded the generator, the overload light will stay on and the reset button (Fig. 24) will activate

to cut off the output in 3 to 16 seconds, depending on the load. Reduce the load by turning off and disconnecting

your electrical device(s) until the overload light turns off. Wait about ﬁve minutes and then press the activated reset

button to reset the circuit. If no power is produced after resetting, turn off and disconnect all electrical devices and

restart your generator.

Fig. 22

Fig. 23

Fig. 24

ON OFF

ECO-MODE

LIGHT

MEANING RESOLUTION

GREEN (POWER INDICATOR) RED (OVERLOAD)

ON OFF Generator output is normal. No action needed.

ON Flashing Continuously Generator is exceeding rated output. Reduce load on generator.

OFF

Flashes 1x

Repeating every 3 seconds

Voltage at alternator is too low.

No electrical output.

Check for loose connections.

Call 1-800-232-1195 for assistance.

OFF

Flashes 2x

Repeating every 3 seconds

Engine speed is too low.

No electrical output.

Check carburator and stepper motor.

Ensure Eco-Mode is OFF. Have genera-

tor serviced; call 1-800-232-1195 for

assistance.

OFF

Flashes 3x

Repeating every 3 seconds

Inverter temperature is too high. No

electrical output.

Turn generator off and let cool down fully

(1-2 hours) before restarting.

OFF

Flashes 5x

Repeating every 3 seconds

Voltage at alternator is too high.

No electrical output.

Have generator serviced; call

1-800-232-1195 for assistance.

OFF

Flashes 6x

Repeating every 3 seconds

Generator has exceeded rated output

and cut off power to protect itself. No

electrical output.

Turn OFF and disconnect loads. Press

RESET button on panel.Reduce load on

generator.

USING YOUR GENERATOR

CIRCUIT BREAKERS

In addition to the reset button that protects the generator’s main

circuit, the circuit breakers (Fig. 25) protect the individual AC and

DC circuits. The 20-amp AC circuit breaker will activate when the

NEMA 5-20 outlets exceed 20A. The 10-amp DC circuit breaker

will activate when the DC 12V and USB outlets exceed 10A. When

the circuit breaker activates, turn off and disconnect the device

from its respective outlet, and press the circuit breaker to reset.

MULTI-METER

The multi-meter on your generator switches between voltage

Fig. 25

(e.g. 120.1), frequency (e.g. 60.0H), and runtime (e.g. 12.3) every 5 seconds. When you ﬁrst use the generator, the

meter will count runtime, but will not store runtime until the generator is run for longer than 2 hours at a time. Once

the generator has been run for more than 2 hours at a time, the meter will track runtime normally. For an example,

as well as more explanation, please refer to Table 4 below.

SESSION NUMBER SESSION LENGTH

HOUR METER

AT END OF SESSION

DOES THE METER

RESET?

COMMENTS

1 1 hr 30 min 1.5 Yes, to 0.0

Meter will show “1.5” just before it is shut off,

but it has not been run for 2 hours at a time

yet.

2 30 min 0.5 Yes, to 0.0

Meter will show “0.5” just before it is shut off,

but it has not been run for 2 hours at a time

yet.

3 1 hr 1 Yes, to 0.0

Meter will show “1.0” just before it is shut off,

but it has not been run for 2 hours at a time

yet.

4 3 hr 3 No

Meter will show “3.0” at the end, since it has

been run for more than 2 hours. It will not in-

clude the 3 hours (1.5 + 0.5 + 1) the generator

was run before.

5 2 hr 5 No

Meter will show “5.0” at the end, since it has

been run for 3 + 2 = 5 hours. The meter is

counting normally, and will continue operating

normally.

Every 50 hours, the meter will display “]--[“, which is to remind you to perform 50-hour maintenance. Consult the

maintenance chart for recommended procedures. The display code will appear every 15 seconds for 6 minutes.

After 6 minutes, or after the generator is shut down and restarted, the code will clear and display voltage, frequency,

and runtime, as before.

NOTE: The fuel gauge on your multi-meter displays the amount of gasoline in the tank. It does not display the

amount of LPG remaining.

Table 4 - Meter Display

SHUTTING OFF THE GENERATOR

CAUTION! Unplugging running devices can cause damage to the generator. Never stop the engine with elec-

trical devices connected and running.

OPTION 1A: AUTOMATIC FUEL SHUTOFF (RECOMMENDED – GASOLINE ONLY)

Your generator is equipped with automatic fuel shutoff. This feature turns off the ﬂow of fuel, allowing for the gen-

erator to use up the remaining fuel from the carburetor before turning off. This prolongs the lifespan of the generator

by preventing build-up and blockages caused by stagnant fuel inside of a carburetor.

1. Turn off all electrical devices prior to unplugging them from

the generator. Unplugging running devices can cause damage to

the generator.

2. Allow generator to run at no load for a few minutes to stabilize

internal temperatures.

3. Turn the propane tank valve to the OFF position (if the propane

regulator hose is connected to the generator).

4. Turn the 2-in-1 dial switch to the OFF position (Fig. 26).

5. The engine will continue to run until the majority of the fuel in

the carburetor is consumed, which takes a few minutes. It will

then shut off automatically. This feature helps to prevent the car-

buretor from being clogged by stale fuel, extending your genera-

tor’s lifespan.

6. Turn the engine switch to the OFF (0) position (Fig. 27).

OPTION 1B: AUTOMATIC FUEL SHUTOFF (RECOMMENDED – LPG ONLY)

Although LPG is not prone to degradation the way gasoline is, it is still a good idea to turn the LPG tank OFF before

disconnecting the regulator hose from the generator, so that LPG does not leak from the hose.

1. Turn off all electrical devices prior to unplugging them. Unplugging running devices can cause damage to genera-

tor.

2. Allow generator to run at no load for a few minutes to stabilize internal temperatures.

3. Turn the 2-in-1 dial switch to the OFF position (Fig. 26), if it is not in the OFF position already.

4. Turn propane tank valve to OFF position (if the propane regulator hose is connected to the generator). The engine

will continue to run until propane in the carburetor is consumed, which will be nearly immediately. It will then shut

down automatically.

NOTE: If there is gasoline in the fuel tank, and any gasoline has made it into the carburetor for some reason, the

generator may continue to run for a few minutes until the gasoline has been consumed.

5. Turn the engine switch to the OFF (0) position (Fig. 27).

Fig. 26

Fig. 27

WARNING! Allow the generator to cool down before touching areas that become hot during use.

CAUTION: Allowing gasoline to sit in the fuel tank for long periods of time can make it difﬁcult to start the gen-

erator in the future. Never store the generator for extended periods of time (over 2 months) with fuel in the fuel

tank. Refer to “Storing the Generator.”

SHUTTING OFF THE GENERATOR

CAUTION! Unplugging running devices can cause damage to the generator. Never stop the engine with elec-

trical devices connected and running.

OPTION 2: MANUAL SHUTOFF

In case you are in a hurry and do not want to wait for the generator to automatically shut down, the manual shutoff

feature is available. However, this method will leave stagnant fuel in the carburetor, possibly causing blockages,

a shortened lifespan, and other maintenance issues. If this approach is frequently taken, make sure to drain your

carburetor before any long storage periods.

1. Turn off all electrical devices prior to unplugging them from

the generator. Unplugging running devices can cause damage to

the generator.

2. Turn the engine switch to the OFF (0) position (Fig. 28).

Fig. 28

MAINTENANCE

Proper routine maintenance of the generator will help prolong the life of the machine. Please perform maintenance

checks and operations according to the schedule in Table 4.

CAUTION! Never perform maintenance operations while the generator is running. Before maintaining or

servicing the generator, turn OFF the generator, disconnect all devices and allow the generator to cool down.

If there are any questions about the maintenance procedures listed in this manual, please call 1-(800) 232-1195 M-F

8-5 CST or email [email protected].

Recommended

Maintenance Schedule

Every 8

Hours or

Daily

Every 25

Hours

Every 3

Months or

50 Hours

Every 6

Months or

100 Hours

Before

Storage

Necessary

Engine Oil

Check Level x

Replace x* x

Air Filter

Check x*

Clean x*

Spark Plug

Check/Clean/

Regap

Change x x

Fuel

Check Level x

Drain x x

Carburetor Drain x x

Spark

Arrestor

Check/Clean x

Table 5 - Recommended Maintenance Schedule* Clean/change more often under dusty conditions

or operating under heavy load.

IMPORTANT GENERATOR MAINTENANCE TIPS:

• Drain your carburetor after each use and before storage to prevent it from clogging.

• Do not store the generator with fuel inside the tank for more than 2 months - the fuel will go bad.

• Run the generator for at least 20 minutes every month to charge the battery and maximize lifespan.

CLEANING THE GENERATOR

Keep the generator clean to prevent improper operation or machine damage from dirt and debris. Inspect all venti-

lation openings on the generator. These openings must be kept clean and unobstructed. If the generator becomes

dirty, use a damp cloth to wipe exterior surfaces. Use a soft bristle brush to loosen dirt and oil and use a vacuum to

pick up loose dirt. Use low pressure air (not to exceed 25 PSI) to blow away dirt.

CAUTION! Never clean the generator when it is running! Never clean with a bucket of water or a hose. Water

can get inside the working parts of the generator and cause corrosion or a short circuit.

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

MAINTENANCE

CLEANING THE GENERATOR

Keep the generator clean to prevent improper operation or machine damage from dirt and debris. Inspect all ventila-

tion openings on the generator. These openings must be kept clean and unobstructed.

If the generator becomes dirty, use a damp cloth to wipe exterior surfaces. Use a soft bristle brush to loosen dirt and

oil and use a vacuum to pick up loose dirt. Use low pressure air (not to exceed 25 PSI) to blow away dirt.

WARNING! Never clean the generator when it is running! Never clean with a bucket of water or a hose. Water

can get inside the working parts of the generator and cause corrosion or a short circuit.

CHECKING / ADDING OIL

Check the oil level before each use and every 8 hours of operation (refer to Table 5).

The oil capacity of the generator engine is 18.6 ﬂ. ounces. Add oil when the oil level is low. For proper type and

weight of oil refer to “add oil” portion of the “Generator Preparation” section. This is a critical step for proper engine

starting. The generator is equipped with a with low-oil shut down to protect it from running without oil.

To check the oil level and add oil:

1. Make sure the generator is on a level surface. Do not tilt the generator, as oil will ﬂow into engine areas and cause

damage. Keep generator level!

2. Turn the oil access cover knob to the unlocked position, and remove the ac-

cess cover from the front panel. Clean around the oil ﬁll. Remove the dipstick

and wipe it with a clean rag.

3. Insert the dipstick into the oil ﬁll opening without screwing in. Remove the

dipstick to check the oil mark (Fig. 29). Add oil if the oil mark covers less than

one half of the dipstick.

4. Using a funnel or appropriate dispenser, slowly add more oil. Repeat the

step above until the oil mark reaches the top of the dipstick (you can see oil

coming up the threads of the oil ﬁll). Do not over ﬁll.

5. Reinstall dipstick and wipe clean any spilled oil with a rag. Reinstall the oil

access cover.

TIP: Your WEN generator is compatible with the WEN 55201 Magnetic Oil Dipstick (not included), available for

purchase at wenproducts.com. The dipstick’s industrial-strength magnetic tip will collect metal shavings from

your generator’s oil pan to help preserve the engine and extend your generator’s lifespan.

Upper Limit

Lower Limit

Fig. 29

MAINTENANCE

DRAINING THE CARBURETOR

We recommend draining the carburetor after every use and before storing the generator. (If the generator is shut off

using the AUTO OFF feature, it is only necessary to drain it before periods of long storage.) Draining the carburetor

can prevent the fuel from clogging up the carburetor; a clogged carburetor can prevent the generator from starting.

1. With the help of another person, place the

generator on an elevated platform such as a

table or desk.

2. Make sure that the 2-in-1 dial switch to

turned to “OFF”. At this position, the fuel

valve is turned OFF so that only the fuel left

inside the carburetor will be drained out.

3. Using a Phillips-head screwdriver, unscrew

the top two screws and remove the service

panel on the opposite side of the recoil starter.

4. The carburetor (Fig. 30 - 1) can be ac-

cessed between the engine and the air ﬁlter.

Locate the transparent tube from the carbure-

tor that extends down through the base plate

of the generator.

5. Prepare an approved gasoline-storage con-

tainer and direct the end of the drain tube into

the container.

Fig. 30

6. Open up the carburetor drain screw (Fig. 30 - 2) with a Phillips-head screwdriver and drain out any gasoline that

has built up inside the carburetor through the drain tube into the approved gasoline-storage container.

7. Once the fuel has drained, tighten the drain screw with the screwdriver.

NOTE: Make sure to drain your carburetor before storing the generator for long periods of time.

8. Reinstall the service panel.

MAINTENANCE

AIR FILTER MAINTENANCE

Check every 50 hours of operation (refer to Table 5 - Recommended Maintenance Schedule).

Routine maintenance of the air ﬁlter helps maintain proper airﬂow to the carburetor. Occasionally check that the air

cleaner is free of excessive dirt.

To inspect and clean the air ﬁlter:

1. Using a Phillips-head screwdriver, unscrew the top two

screws and remove the service panel on the opposite side of

the recoil starter.

2. Take the cover off of the air ﬁlter (Fig. 31). Remove the

sponge-like air ﬁlter element from the casing. Wipe excessive

oil and any dirt from inside of the air ﬁlter casing.

3. Check and clean the foam air ﬁlter element. Good elements

can be washed in soapy water. Dry the element in clean cloth

(do not twist it). Add a few drops of engine oil to the air ﬁlter

element and spread it evenly.

If the air ﬁlter element has been damaged, replace it with a new one. Replacement air ﬁlters can be ordered from

wenproducts.com by searching part no. 56380i-1001B.1.

4. Reinstall the air ﬁlter element, air ﬁlter cover and service panel.

WARNING! Running the engine with a dirty, damaged or missing air ﬁlter element can result in danger to the

operator and cause the engine to wear out prematurely.

SPARK ARRESTOR MAINTENANCE

Inspect and clean the spark arrestor every 100 hours of operation.

The spark arrester is located outside the mufﬂer, which gets very hot during operation. Allow the engine to cool

completely before servicing the spark arrester. To inspect and clean the spark arrester:

1. Remove the two Phillips-head screws that secure the

spark arrestor to the mufﬂer (Fig. 32).

2. Remove the spark arrestor screen.

3. Carefully clean and remove the carbon deposits from the

spark arrestor screen with a wire brush. Replace the spark

arrestor if it is damaged (replacement spark arrestors can be

purchased from wenproducts.com by searching the part no.

56380i-1115).

4. Reinstall the spark arrestor in the mufﬂer and secure it in

place with the screws.

Fig. 31

Fig. 32

Air Filter CoverAir Filter Cover

MAINTENANCE

SPARK PLUG MAINTENANCE

Refer to Recommended Maintenance Schedule in Table 5 for maintaining the spark plug.

The spark plug is important for proper engine operation. Check the spark plug regularly to maintain proper engine

operation. A good spark plug should be intact, free of deposits, and properly gapped.

To inspect or replace the spark plug:

1. Using a Phillips-head screwdriver, unscrew the top two

screws and remove the service panel on the opposite side of

the recoil starter.

2. Gently pull on the spark plug boot (Fig. 33) to remove it. Be

careful not to tear any insulation or wire.

3. Use the included spark plug wrench to unscrew and then

carefully remove the spark plug from the engine (Fig. 34).

TIP: There is limited space for the wrench to turn. Use both

rows of holes in the spark plug wrench to gain leverage to

loosen the plug.

4. Visually inspect the spark plug. If it is cracked or chipped,

or if the electrodes are worn or burned, discard it and replace

with a new spark plug.

We recommend replacing with a NGK BPR6ES/Torch F6RTC

spark plug (part no. 56310i-0104), available for purchase at

wenproducts.com.

5. If re-using the spark plug, use a wire brush to clean any dirt

from around the spark plug base, then re-gap the spark plug.

6. Measure the plug gap with a spark plug gap gauge. The gap

should be 0.7 - 0.8 mm (0.028 - 0.031 in) (Fig. 35). Carefully

adjust the gap if necessary.

7. Screw the spark plug back into the spark plug hole using

the spark plug wrench. Do not over-tighten spark plug. Rec-

ommended tightening of spark plug is ½ to ¾ of a turn (15

ft-lb torque/20.33 Nm) after spark plug gasket contacts spark

plug hole.

8. Reinstall the spark plug boot, spark plug rubber cover, and

service panel.

0.7 mm - 0.8 mm

Fig. 33

Fig. 34

Fig. 35

Spark Plug BootSpark Plug Boot

Cylinder AssemblyCylinder Assembly

Spark Plug

Wrench

Spark Plug

Handle

MAINTENANCE

DRAINING / CHANGING OIL

Change the oil according to the Recommended Maintenance Schedule in Table 5.

Change the oil MORE OFTEN if operating under heavy load or high ambient temperatures. It is also necessary to

drain the oil from the crankcase if it has become contaminated with water or dirt. Changing the oil when the engine

is warm allows for more-complete drainage.

To change engine oil:

1. With the help of another person, place the generator on an

elevated platform such as table or workbench.

NOTE: To avoid possible gasoline spills from the carburetor

bowl, drain the carburetor before draining oil.

2. Turn the oil access cover knob to the unlocked position, and

remove the cover from the side panel.

3. Prepare an approved oil-storage container and place it be-

low the oil drainage valve (Fig. 36) to catch oil as it drains.

4. Open the oil drainage valve by turning the lever, and allow

oil to drain from the engine completely.

5. Close the oil drainage valve after the oil has drained.

Fig. 36

Oil FillOil Drainage

Valve

NOTE: Never dispose of used engine oil in the trash or down a drain. Please call a local recycling center or auto

garage to arrange proper oil disposal.

6. Unscrew the oil dipstick. Using a funnel or appropriate dispenser, add 18.6 oz. of clean engine oil into the oil ﬁll

until you can see oil coming up the threads of the oil ﬁll. Do not over ﬁll.

7. Reinstall the oil dipstick and tighten it securely. Wipe clean any oil spillage and reinstall the oil access cover.

MAINTENANCE

DRAINING THE FUEL TANK

Drain and clean the fuel tank each year, or before storing the generator for longer than two months.

To drain the fuel tank and carburetor:

1. Using a Phillips-head screwdriver, remove the service panel

on the opposite side of the recoil starter by unscrewing the

top two screws.

2. Locate the carburetor and the transparent drain tube that

extends down through the base plate of the generator (Fig.

37).

3. Prepare an approved gasoline-storage container and direct

the end of the transparent tube into the container.

4. Remove the fuel cap. Turn the 2-in-1 dial switch to the

“RUN” position (Fig. 38). This will open up the fuel valve.

5. Open up the carburetor drain screw (Fig. 37) with a Phillips

screwdriver. Fuel will start draining from the carburetor and

fuel tank through the drain tube.

NOTE: The draining process may take a few hours, depending

on the amount of fuel in your gas tank.

6. Once fuel is completely drained from the tube, reinstall the

fuel cap and turn the 2-in-1 switch to “OFF” position. Tighten

the drain screw with the screwdriver and reinstall the service

panel.

7. Start and run the generator until the fuel runs out.

8. Store the emptied gasoline in a suitable place. DO NOT

store ﬂammable materials near the gasoline.

CAUTION: Store the emptied gasoline in a suitable place. Never store fuel for more than 2 months.

Fig. 37

Fig. 38

Drain TubeDrain Tube

Carburetor

Drain Screw

Carburetor

Drain Screw

MAINTENANCE

BATTERY MAINTENANCE/STORAGE

The lithium-ion battery will receive charge when the engine is running. Remember to run the generator once a

month for 20-30 minutes to charge the battery. A charged battery will allow you to start the generator us¬ing the

electric start button during your next time of need. If the battery is out of charge, you may start the generator using

the recoil starter. If the generator is not used for a long period, it is recommended to disconnect the negative (black)

battery cable from the battery to protect it from losing charge. After disconnecting the cable, cover the free end with

an insulator such as electrical tape.

TIP: You can also connect the battery to an automatic trickle charger to keep the battery charged. If using a trickle-

charger, charge the battery at room temperature. Make sure to use a trickle-charger suitable for lithium-ion batteries.

Lithium-ion batteries can be damaged or suffer a shortened lifespan if they are charged in very cold temperatures

(below freezing). If you expect to store the generator in temperatures below 25°F (-5°C), we recommend removing

the battery from the generator and storing it indoors. If using the generator in temperatures below 25°F (-5°C), we

recommend running the generator for at least 15 minutes with the battery removed, or the negative (black) battery

cable disconnected and covered with an insulator such as electrical tape, and then connecting the battery. This will

allow the inside of the generator to warm up, and will greatly reduce the chance of damage to the battery.

To reinstall/replace the battery:

1. Using a quarter coin or ﬂat-head screwdriver (not includ-

ed), open and remove the battery access cover (Fig. 39).

2. Loosen the rubber belt and pull out the battery (Fig. 40).

3. Disconnect negative (-) battery terminal ﬁrst (black cable).

4. Disconnect positive (+) battery terminal second (red cable).

5. Replace with an identical new battery (part no. 56380i-

1304).

6. Connect the positive (+) battery terminal (red cable) ﬁrst.

Slide rubber boot over the positive terminal.

7. Connect the negative (-) battery terminal (black cable)

sec¬ond. Slide rubber boot over the negative terminal.

8. Return the battery into position and use the rubber belt to

fasten the battery.

9. Reinstall and secure the battery access cover.

NOTE: Always recycle used batteries in accordance with local

laws and regulations. Contact your local solid waste collection

site or recycling facility to obtain information on local recy-

cling processes.

Fig. 39

Fig. 40

Rubber Belt

Battery

Access

Cover

WARNING! It is best to store the battery indoors at room temperature. Do not store your battery outside in

the winter, where temperatures may go below 25°F (-5°C), or in any location where temperatures may exceed

104°F (40°C), such as in direct sunlight or inside a vehicle or metal building during the summer.

TRANSPORTATION & STORAGE

WARNING! Avoid direct sunlight inside a vehicle. If the generator is left in an enclosed vehicle for many

hours, the high temperature could cause the fuel to vaporize and result in a possible explosion.

WARNING! Store the generator upright in a cool and dry location, away from sources of heat, open ﬂames,

sparks or pilot lights.

TRANSPORTING THE GENERATOR

To prevent fuel spillage when transporting, be sure to perform the following:

1. Tighten the fuel cap.

2. Flip the engine switch to the OFF position.

3. Drain the fuel tank if possible. Refer to section, “Draining the Fuel Tank.”

4. Keep the generator upright. Never place the generator on its side or upside down - doing so could damage the

internal components of the generator and make it difﬁcult to start.

STORING THE GENERATOR

Shut off the generator and allow the unit to cool to room temperature before storing it. NEVER place any type of

storage cover on the generator while it is still hot. Do not obstruct any ventilation openings.

Follow the procedures below for properly storing your generator. We highly recommend running your generator

once a month for 20 to 30 minutes. Plug in a small load in to ensure there is proper power output.

PRODUCT DISPOSAL

Do not dispose of a used generator or parts with your household waste. This product contains electrical or elec-

tronic components that should be recycled. Please take this product to your local recycling facility for responsible

disposal to minimize its environmental impact.

Do not dispose of used oil or fuel in the trash or down a drain. Please contact your local recycling center or auto

garage to arrange proper oil/fuel disposal.

For Short Periods (30 to 60 Days):

• Drain the carburetor. Refer to page 29, “Draining the

Carburetor.”

• Disconnect the negative lead from the battery.

• Add fuel stabilizer: Follow the suggested portions and

instructions of your preferred stabilizer. Run the engine for

15 to 20 minutes, allowing the fuel stabilizer to mix with the

gasoline and circulate through the carburetor, and then top

off with fuel. Filling the fuel tank full reduces the amount of

air in the tank and helps ﬁght deterioration of fuel.

For Extended Periods (Over 60 Days):

• Disconnect the negative lead from the

battery.

• Drain the fuel tank and carburetor (see

“Draining the Fuel Tank”). Never store

generator with fuel in the tank for more

than two months.

• Change the engine oil (see “CHANGING

OIL”).

Please recycle the packaging and electronic components where facilities exist. Please contact your

local auto garage or recycling facility to properly dispose of oil/fuel.

TROUBLESHOOTING GUIDE

WARNING! Stop using the generator immediately if any of the following problems occur or risk serious

personal injury. If you have any questions, please contact customer service at 1-800-232-1195 (M-F 8-5 CST),

or email [email protected].

PROBLEM POSSIBLE CAUSE SOLUTION

Engine will not

start.

1. 2-in-1 dial switch is in wrong position. 1. Set switch to CHOKE if engine is cold and RUN if engine is warm.

2. Engine switch is set to OFF (0).

2. Turn engine switch to ON (I) if using recoil start, or START (II) if

using electric start.

3. Engine has not been primed (LPG

only).

3. Prime engine.

4. Battery is out of power.

4. Electric start will not work if battery is out of power. Start generator

using the recoil start to charge the battery.

5. Battery is too cold.

5. Electric start may be difﬁcult if the battery is too cold. Store the

generator or battery in a warmer location.

6. Oil is low. 6. Add oil.

7. Engine is out of fuel. 7. Add fuel.

8. Engine is ﬁlled with contaminated or

old fuel.

8. Drain fuel in the tank and carburetor. Replace with fresh fuel.

9. Spark plug is dirty or broken. 9. Clean or replace spark plug.

10. Propane tank is turned OFF. 10. Dang it, Bobby, I told you to turn that thing on!

11. Carburetor is air locked.

11. Turn the 2-in-1 switch to OFF. Remove bolt from bottom of the

carburetor. Take off the carburetor bowl to allow it to reset. Replace

carburetor bowl and reinstall the bolt.

12. Regulator is stuck.

12. Turn OFF propane tank. Disconnect hose from propane ﬁtting. Contact

WEN customer service for assistance.

13. Ghost in the generator. 13. Persuade ghost to leave. Consult Bill Murray if needed.

Engine runs, but

there is no

electrical

output.

1. Reset button has activated due to watt-

age overload.

1. Turn off and unplug all electrical devices. Press reset button. Check

the total wattage of the devices and reduce the load if it exceeds the

capacity of the generator for your particular fuel (LPG or gasoline).

2. Breaker has tripped due to wattage

overload.

2. Turn off and unplug all electrical devices. Wait 3 minutes, and press

the activated breaker to reset. Check the total wattage of the devices

and reduce the load if it exceeds the capacity of the generator for your

particular fuel (LPG or gasoline).

3. Bad connecting cord or wire.

3. Check power cords & extension cords. Do not use if any cord is

damaged. Replace damaged cords immediately.

4. Bad electrical device connected to the

generator.

4. Try connecting a different device.

Generator runs,

but does not

support all

electrical devices

connected.

1. AC or DC receptacles are overloaded;

circuit breaker has tripped.

1. Turn off and unplug all electrical devices. Wait 3 minutes, then

press the breaker to reset. Check the amperage of the devices to

ensure they are within the receptacles’ rated capacities.

2. Short circuit in one of the devices. 2. Disconnect any faulty or short-circuited electrical devices.

3. Air ﬁlter is dirty. 3. Clean or replace the air ﬁlter element.

Engine is

“hunting”

during operation

(engine RPM is

ﬂuctuating).

1. Gasoline is not running through fuel valve. 1. Make sure there is enough fuel. Make sure 2-in-1 switch is turned to RUN.

2. Propane level is getting low. 2. Switch to a new propane tank, or use gasoline.

3. Air ﬁlter is dirty. 3. Clean or replace the air ﬁlter element.

4. Spark arrestor is dirty. 4. Clean the spark arrestor.

5. There is gunk in the carburetor preventing

a consistent fuel/air mixture.

5. Use carburetor cleaner spray on the carburetor bowl and jets.

IMPORTANT: Repairs and replacements should only be performed by an authorized technician. Parts and acces-

sories that wear down over the course of normal use are not covered by the three-year warranty.

WIRING DIAGRAM

No. Part No. Description Qty.

1-1 56380i-0101

Crankcase

Subassembly

1-2 56380i-0102 Flat Washer, 10mm 1

1-3 56380i-0103

Connector, Oil Drain

Hose

1-4 56380i-0104 Oil Drain Hose 1

1-5 56380i-0105 Trigger 1

1-6 56310i-1106 Bolt, M5x16 2

1-7 56380i-0107

Crankcase Side

Shield

1-8 56310i-1201 Bolt, M6x16 4

1-9 56310i-0211 Engine Oil Sensor 1

1-10 56310i-0210 Nut, M10 1

1-11 56380i-0111 Bearing, 6305 1

No. Part No. Description Qty.

2-1 56380i-0201 Cover, Crankcase 1

2-2 56200-0803 Pin 2

2-3 56380i-0203 Ball Bearing, 6205 1

2-4 56380i-0204 Gasket, Crankcase 1

2-5 56310i-0306 Oil Seal 1

2-6 56310i-0307 Bolt, M8x32 6

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

1-12 56310i-0306 Oil Seal 1

1-13 56380i-0113 Starter Motor 1

1-14 56380i-0114 Bolt, M6x28 2

1-15 56380i-0115 Protective Cover 1

1-16 DF400i-0116 Ignition Coil 1

1-17 56380i-0114 Bolt, M6x28 2

1-18 DF400i-0118 Oil Dipstick 1

1-19 56380i-0907 Wiring Clamp 1

1-20 56310i-0207 Bolt, M5x20 2

1-21 DF400i-0121 Wiring Clamp 1

1-22 DF400i-0122 Nut, M5 2

1-23 56200-1202 Bolt, M6x12 3

FIG. 1 - CRANKCASE ASSEMBLY

FIG. 2. CRANKCASE COVER ASSEMBLY

NOTE: Replacement parts can be purchased from wenproducts.com, or by calling our customer service

at 1-(800) 232-1195, M-F 8-5 CST. Parts and accessories that wear down over the course of normal use

are not covered by the three-year warranty. Not all parts may be available for purchase.

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

3-1 56310i-1701 Bolt, M6x20 4

3-2 56380i-0302

Cylinder Head

Cover Subassem

bly

3-3 56380i-0303

Gasket, Cylinder

Head Cover

3-4 56310i-0104

Spark Plug (Torch

F6RTC, NGK

BPR6ES)

3-5 56310i-0106

Cylinder Head Bolt,

M8x60

3-6 56380i-0306 Breather Tube 1

3-7 56380i-0307

Cylinder Head

Subassembly

No. Part No. Description Qty.

3-8 56310i-0109 Bolt, M8x34 2

3-9 56380i-0309 Stud Bolt, M6x105 2

3-10 56380i-0310

Gasket, Cylinder

Head

3-11 56380i-0311 Pin 2

3-12 56380i-0312 Limiter 1

3-13 56200-1202 Bolt, M6x12 2

3-14 56380i-0314 Gasket, Breather 1

3-15 56380i-0315 Breather Plate 1

No. Part No. Description Qty.

4-1 56380i-0401

Crankshaft

Assembly

FIG. 3. CYLINDER HEAD ASSEMBLY

FIG. 4. CRANKSHAFT ASSEMBLY

No. Part No. Description Qty.

5-1 56310i-0501

Piston Ring

Assembly

5-2 56310i-0505 Piston Pin Clip 2

5-3 56380i-0503 Piston 1

5-4 56310i-0504 Piston Pin 1

5-5 56380i-0505 Connecting Rod 1

No. Part No. Description Qty.

6-1 56380i-0601B

Camshaft

Assembly

6-2 56380i-0602 Valve Set 1

6-3 56310i-0603 Seal Guide 1

6-4 56310i-0604 Valve Spring 2

6-5 56380i-0605 Valve Spring Seat 2

6-6 56310i-0606 Valve Lock Clamp 4

6-7 56310i-0607 Valve Tappet 2

6-8 56380i-0608

Valve Lifter

Subassembly

6-9 56380i-0609 Valve Rocker Arm 2

6-10 56380i-0610 Rocker Shaft 2

6-9 56380i-0609 Valve Rocker Arm 2

6-10 56380i-0610 Rocker Shaft 2

No. Part No. Description Qty.

7-1 56380i-0701

Recoil Starter And

Shroud Assembly

7-2 56200-1202 Bolt, M6x12 4

7-3 56200-0706 Bolt, M6x10 3

7-4 56380i-0704 Starter Pulley 1

7-5 56380i-0705 Starter Cup Seat 1

7-6 56200-1202 Bolt 4

7-7 56380i-0707 Shroud 1

7-8 56380i-0708

Recoil Starter As

sembly

7-10 DF400-0710

Clip

EXPLODED VIEW & PARTS LIST

FIG. 5. PISTON RING SET

& CONNECTING ROD

FIG. 6. VALVE TRAIN &

CAMSHAFT SUBASSEMBLY

FIG. 7. RECOIL STARTER

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

8-1 56380i-0801

Gasket, Carburetor

Insulator

8-2 56380i-0802

Carburetor Insulator

Plate

8-3 56380i-0803 Gasket, Carburetor 1

8-4 DF400i-0804

Carbureto

Assembly

8-5 56200-1305 Fuel Strainer 1

8-6 DF400i-0806 Clamp 4

8-7 DF400i-0807 Pressure Hose 1 1

8-8 DF400i-0808 Pressure Hose 2 1

8-9 56380i-0805 Clamp 1

8-10 56380i-0806 Fuel Tube 1

8-11 DF400i-0811 Clamp 1

8-12 DF400i-0812 Rubber Jacket 1

No. Part No. Description Qty.

10-1

56310i-1101

Flywheel Nut, M14-

1.5

10-2 56380i-0902 Impeller 1

10-3 56310i-1103 Bolt, M6x60 3

10-4 56380i-0904 Rotor 1

10-5 56380i-0905 Stator 1

10-6 56380i-0906 Flat Washer, 6mm 3

No. Part No. Description Qty.

10-1 DF400-1001

Air Filter

Assembly

10-2 56380i-1002 Intake Tube 1

10-3 56380i-1003 Intake Tube Clamp

10-4 56310i-1701 Bolt

10-5 56380i-1005

Secondary Air

Filter

10-6 56200-0506 Nut

10-7 56310i-0901 Gasket, Air Filter

FIG. 8. CARBURETOR ASSEMBLY FIG. 9. FLYWHEEL, IMPELLER,

STARTER PULLEY, IGNITION COIL

FIG. 10. AIR FILTER

No. Part No. Description Qty.

11-1

DF400i-1101 Shroud 1

11-2 56380i-1102B Mufﬂer Cover Support 1

11-3 56380i-1103 Impeller 1

11-5 56380i-1105 Mufﬂer Insulation Plate 1

11-6 56380i-1106 Mufﬂer Assembly 1

11-7 56310i-1010 Gasket, Mufﬂer 2

11-8 56380i-1108 Nut, M8 1

11-9 56310i-1009 Bolt, M8x16 5

11-11 56310i-1004 Bolt, M8x20 1

11-12 56380i-1112 Bolt, M6x35 1

11-13 DF400i-1113 Bolt, M6x12 2

11-14 56380i-1114 Bolt, PT4x13 1

EXPLODED VIEW & PARTS LIST

FIG. 11. MUFFLER ASSEMBLY

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

12-1 56380i-1201 Fuel Tank Assembly 1

12-2 56380i-1202 Fuel Gauge 1

12-3 56380i-1203 Fuel Tank Outlet 1

12-4 56310i-1701 Bolt, M6x20 4

12-5 56380i-1205 Flat Washer 4

12-6 56380i-1206 Bushing 4

12-7 56380i-1207 Fuel Tank Damper 4

12-8 56380i-1208 Fuel Tank Cap 1

12-9 56380i-1209 Fuel Strainer 1

12-10 56380i-1210 Fuel Tank Sleeve 1

12-11 56200-0413 Fuel Level Sight Glass 1

12-12 56380i-1212 Upper Cover 1

12-13 56380i-1213 Cover Plug 1

12-14 56380i-1409 Bolt, M5x16 8

FIG. 12. FUEL TANK ASSEMBLY

Fig.

No.

Part No. Description Qty.

13-1

56380i-

1301B

Engine Frame As

sembly

13-2 56380i-1302 Battery Case 1

13-3 56200-1202 Bolt, M6x12 14

13-4 56380i-1304

Battery, 12V,

1.6Ah

13-5 56380i-1305 Battery Bracket 1

13-6

56380i-

1306B

Anode Wire

(Negative)

13-7 56380i-1307

Cathode Wire

(Positive)

13-8 56310i-1420 Bolt, M6x25 3

13-9 56310i-1419 Bushing 3

13-10 56310i-1421 Rubber Jacket 3

13-11 56380i-1311 Inverter 1

13-12 56310i-1201 Bolt, M6x16 1

13-13 56380i-1313 Rubber Jacket 1

13-14 56380i-1314

Carbon Tank

Mounting Bracket

13-15 DF400i-1315 Carbon Tank 1

Fig.

No.

Part No. Description Qty.

13-16 56380i-1316

Carbon Tank

Hose, Primary

13-17

56380i-

1317B

Air Filter Hose 1

13-18 56380i-1318

Carbon Tank

Hose, Secondary

13-19 56380i-1319 Clamp 2

13-20 56380i-1321 Clamp 2

13-21 DF400i-0812 Rubber Jacket 1

13-22 56310i-1009 Bolt, M8x16 2

13-23 56380i-1323 Front Handle 1

13-24 56380i-1324 Handle 1

13-25 56380i-1325 Bolt, M8x30 2

13-26 56380i-1326 Screw, M4x8 1

13-27 56380i-1327 Grounding Wire 1

13-28 DF400i-1328 LPG Regulator

13-29 DF400i-1329 Hose Clamp

13-30 DF400i-1330 LPG Hose

13-31 DF400i-1331 Rubber Jacket

EXPLODED VIEW & PARTS LIST

FIG. 13. FRAME

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

14-1

56380i-1419 Multi-meter 1

14-2 56380i-1432 Rectiﬁer Bridge 1

14-3 56380i-1422

Eco-Mode Switch

Subassembly

14-4 56380i-1420 Reset Button 1

14-5 56380i-1424 Parallel Port, Positive 1

14-6 56380i-1423

Parallel Port,

Negative

14-7 56380i-1426 USB Outlet 1

14-8

56380i-1425

12V DC Outlet 1

14-9 56380i-1427 Grounding Nut 1

14-10 56380i-1428 NEMA TT-30R Outlet 1

14-11 56380i-1429 DC Breaker, 10A 1

14-12 56380i-1430 AC Breaker, 20A 1

14-13 56380i-1421

NEMA 5-20R Duplex

Outlet

14-14 DF400i-1414 Engine Switch 1

14-15

DF400i-

1415ASM

Control Panel

Assembly

14-16 56200-0615 Screw, ST4.2x16 3

14-17 56380i-1402 Switch Subassembly 1

14-18 56200-0621B Cover Plate 1

No. Part No. Description Qty.

14-19

56200-0624B Adjustment Spring 1

14-20 56200-0623 Steel Ball 1

14-21 56200-0502 Bolt, M6x14 1

14-22 56200-0628 Fuel Cock Assembly 1

14-23 56310i-1628B

Choke Handle

Subassembly

14-24 56380i-1409 Bolt, M5x16 6

14-25 DF400i-1425 Panel Seat 1

14-26 56200-0302 Screw, M5x12 6

14-27 56200-0514 Screw, M4x16 1

14-28 DF400i-1428 Knob 1

14-29 56200-0425B Bolt, M5x16 1

14-30 56200-0427B Nylon Nut, M5 1

14-31 56380i-1417 Blocker 1

14-32 56380i-1418 Battery Cover 1

14-33 DF400i-0811 Clamp 1

14-34 56380i-1434 Fuel Tube 1

14-35 56380i-0805 Clamp 1

14-36 DF400i-1436 LPG Inlet 1

14-37 DF400i-1437 LPG Inlet Plug 1

14-38 DF400i-1438 Clamp 1

14-39 DF400i-1439 Nut, M14-1.5 1

14-40 56380i-1326 Screw, M4x8 1

FIG. 14. CONTROL PANEL

No. Part No. Description Qty.

15-1

56380i-1501 Handle Tube 1

15-2 56380i-1502 Left Rotation Arm 1

15-3 56380i-1503 Right Rotation Arm 1

15-4 56380i-1504

Left Handle

Connector

15-5 56380i-1505

Right Handle

Connector

15-6 56380i-1506

Left Handle

Connector Seat

15-7 56380i-1507

Right Handle

Connector Seat

15-8 56380i-0313 Bolt, M6x12 2

No. Part No. Description Qty.

15-9

56380i-1509 Bolt, M6x10 4

15-10 56310i-1201 Bolt, M6x16 4

15-11 56310i-1807 Nylon Nut, M6 2

15-12 56380i-1512 Flat Washer 2

15-13 56380I-1513 Connector Fastener 2

15-14 56380i-1514 Flat Washer 6

15-15 56380I-1515 Positioning Block 2

15-16 56380i-1516 Washer 4

15-17 56380i-1517 Flat Washer 2

EXPLODED VIEW & PARTS LIST

FIG. 15. WHEEL ASSEMBLY

EXPLODED VIEW & PARTS LIST

No. Part No. Description Qty.

16-1

56380i-1601 Left Cover 1

16-2 56200-0406 Bolt, M5x12 4

16-3 56380i-1603 Left Shell 1

16-4 56380i-1604 Right Shell 1

16-5 56380i-1605 Right Cover 1

16-6 56200-0408 Nut, M6 8

16-7 56380i-1607 Bolt, M6x20 8

16-8 56200-0515

Fuel Tank Rubber

Sleeve

16-9 56200-1202 Bolt, M6x12 8

16-10 56380i-1610

Recoil Starter Guide

Subassembly

No. Part No. Description Qty.

16-11

56200-0302 Screw, M5x12 2

16-12 56200-0420 Recoil Starter Handle 1

16-13 56380i-1613

Right Maintenance

Door

16-14 56200-0425C Bolt 1

16-15 56380i-1615

Maintenance Door

Lock

16-16 DF400i-1616 Spring Clip 1

16-17 56380i-1617 Wheel 2

16-18 56380i-1618 Wheel Axle 2

16-19 56380i-1619

Nut, M5 16

FIG. 16. SHELL, OUTER COVERS

NOTE: Replacement parts can be purchased from wenproducts.com, or by calling our customer service

at 1-(800) 232-1195, M-F 8-5 CST. Parts and accessories that wear down over the course of normal use

are not covered by the three-year warranty. Not all parts may be available for purchase.

No. Part No. Description Qty.

17-1

56380i-1701 Baseplate 1

17-2 56380i-1702

Engine Frame Damper

Seat

17-3 56310i-1201 Bolt, M6x16 4

17-4 56200-0408 Nut, M6 4

17-5 56380i-1705 Reinforcement Plate 1

17-6 56200-1202 Bolt, M6x12 2

17-7 56310i-1407 Cover Plug 1

17-8 56380i-1619 Nut, M5 4

17-9 56380i-1709 Cushion 1

17-10 56380I-1710 Left Support 1

17-11 56380I-1711 Right Support 1

17-12 56310i-1409

Left Engine Frame

Damper

17-13 56310i-1411

Right Engine Frame

Damper

17-14 56310i-1412 Bolt, M8x40 4

17-15 56310i-1404 Nut, M8 10

17-16 56380i-1716

Crankcase Airﬂow

Manifold

17-17 56380i-1717 Air Filter Support 1

17-18 56200-1202 Bolt, M6x12 2

17-19 56380i-1719 Shipping Bracket 4

17-20 56200-0506 Nut, M6 4

No. Part No. Description Qty.

18-1 56380i-1801

Outer Mufﬂer

Cover

18-2 56380i-1409 Bolt, M5x16 6

18-3 56380i-1803 Heat Insulator 1

18-4 56380i-1804 Inner Mufﬂer Cover 1

18-5 56200-0406 Bolt, M5x12 6

EXPLODED VIEW & PARTS LIST

FIG. 17. BASE PLATE

FIG. 18. MUFFLER COVER

WARRANTY STATEMENT

WEN Products is committed to building tools that are dependable for years. Our warranties are consistent with this

commitment and our dedication to quality.

LIMITED WARRANTY OF WEN PRODUCTS FOR HOME USE

GREAT LAKES TECHNOLOGIES, LLC (“Seller”) warrants to the original purchaser only, that this WEN consumer prod

uct will be free from defects in material or workmanship during personal use for a period of three (3) years from date

of purchase or 500 hours of use; whichever comes ﬁrst. Ninety days for all WEN products if the tool is used for profes

sional or commercial use. Purchaser has 30 days from the date of purchase to report missing or damaged parts. Parts

and labor are covered for one (1) year under this limited warranty; parts only are covered for three (3) years under this

limited warranty.

SELLER’S SOLE OBLIGATION AND YOUR EXCLUSIVE REMEDY under this Limited Warranty and, to the extent per

mitted by law, any warranty or condition implied by law, shall be the replacement of parts, without charge, which are

defective in material or workmanship and which have not been subjected to misuse, alteration, careless handling, mis

repair, abuse, neglect, normal wear and tear, improper maintenance, improper storage, incorrect lubricants / fuels, or

other conditions adversely affecting the Product or the component of the Product, whether by accident or intentionally,

by persons other than Seller. To make a claim under this Limited Warranty, you must make sure to keep a copy of your

proof of purchase that clearly deﬁnes the Date of Purchase (month and year) and the Place of Purchase. Place of Pur-

chase must be a direct vendor of Great Lakes Technologies, LLC. Purchasing through third party vendors, including but

not limited to garage sales, pawn shops, resale shops, or any other secondhand merchant, voids the warranty included

with this product. Contact [email protected] or 1-800-232-1195 with the following information to make

arrangements: your shipping address, phone number, serial number, required part numbers, and proof of purchase.

Damaged or defective parts and products may need to be sent to WEN before the replacements can be shipped out.

Upon the conﬁrmation of a WEN representative, your product may qualify for repairs and service work. When returning

a product for warranty service, the shipping charges must be prepaid by the purchaser. The product must be shipped

in its original container (or an equivalent), properly packed to withstand the hazards of shipment. The product must be

fully insured with a copy of the proof of purchase enclosed. There must also be a description of the problem in order

to help our repairs department diagnose and ﬁx the issue. Repairs will be made and the product will be returned and

shipped back to the purchaser at no charge for addresses within the contiguous United States.

HIS LIMITED WARRANTY DOES NOT APPLY TO ITEMS THAT WEAR OUT FROM REGULAR USAGE OVER TIME,

INCLUDING FILTERS, SPARK PLUGS, VOLTAGE REGULATORS, BRUSHES, GASKETS, O-RINGS, WHEEL KITS, BAT

TERIES, RECOIL STARTERS, HIGH PRESSURE HOSES, SPRAY GUNS, ETC. ANY IMPLIED WARRANTIES SHALL BE

LIMITED IN DURATION TO THREE (3) YEARS FROM DATE OF PURCHASE. SOME STATES IN THE U.S. AND SOME

CANADIAN PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE

ABOVE LIMITATION MAY NOT APPLY TO YOU.

IN NO EVENT SHALL SELLER BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING BUT

NOT LIMITED TO LIABILITY FOR LOSS OF PROFITS) ARISING FROM THE SALE OR USE OF THIS PRODUCT. SOME

STATES IN THE U.S. AND SOME CANADIAN PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF IN

CIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH

VARY FROM STATE TO STATE IN THE U.S., PROVINCE TO PROVINCE IN CANADA AND FROM COUNTRY TO COUNTRY.

THIS LIMITED WARRANTY APPLIES ONLY TO ITEMS SOLD WITHIN THE UNITED STATES OF AMERICA, CANADA

AND THE COMMONWEALTH OF PUERTO RICO. FOR WARRANTY COVERAGE WITHIN OTHER COUNTRIES, CONTACT

THE WEN CUSTOMER SUPPORT LINE. FOR WARRANTY PARTS OR PRODUCTS REPAIRED UNDER WARRANTY

SHIPPING TO ADDRESSES OUTSIDE OF THE CONTIGUOUS UNITED STATES, ADDITIONAL SHIPPING CHARGES MAY

APPLY.

NOTES

THANKS FOR

REMEMBERING

V. 2021.03.03

WEN DF400I Super Quiet 4000-Watt Dual Fuel Inverter Generator

Product's Documents

Product manual

Specifications

WEN DF400I Questions and Answers