Wen DF400iX Instruction Manual
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Wen DF400iX Instruction Manual

4000w dual fuel inverter generator
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MODEL DF400iX
4000W DUAL FUEL
INVERTER GENERATOR
Instruction Manual
NEED HELP? CONTACT US!
Have product questions? Need technical support? Please feel free to contact us:
1-800-232-1195 (M-F 8AM-5PM CST)
TECHSUPPORT@WENPRODUCTS.COM
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.
WENPRODUCTS.COM
For replacement parts and the most up-to-date instruction manuals, visit

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Summary of Contents for Wen DF400iX

  • Page 1 1-800-232-1195 (M-F 8AM-5PM CST) TECHSUPPORT@WENPRODUCTS.COM 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.

  • Page 2: Table Of Contents

    Transportation & Storage ................40 Troubleshooting Guide ................... 41 Warranty Statement ..................42 WENPRODUCTS.COM To purchase accessories for your tool, visit Magnetic Oil Dipstick (Model No. 55201) Weatherproof Generator Cover (Model No. 56310iC) WEN Parallel Connection Kit High-Altitude Kit (Part No. DF400i-HA36 & DF400i-HA68)

  • Page 3: Welcome

    SPECIFICATIONS GENERATOR Rated Wattage Gasoline: 3200 Watts; LPG: 2900 Watts Surge Wattage Gasoline: 4000 Watts; LPG: 3200 Watts AC: 120V Rated Voltage DC: 12V (Cigarette Lighter), 5V (USB) AC: 26.6A (Total), 26.6A (TT-30R), 20A (5-20R) Rated Amperage DC: 10A (Total), 8A (Cigarette Lighter), 1A/2.1A (USB) Phase Single Frequency...

  • Page 4: Introduction

    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;...

  • Page 5: Safety

    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.

  • Page 6: Generator Safety Warnings

    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.
  • Page 7 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. OPERATING ENVIRONMENT 3. If any part of the generator, electrical device or pow- er cord is broken, damaged, or defective, make sure 1.
  • Page 8 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. TO MAXIMIZE THE LIFESPAN OF YOUR GENERATOR: We recommend running your generator at least once a month for 20 to 30 minutes.

  • Page 9: Before Operating

    UNPACKING & PACKING LIST 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.

  • Page 10: Know Your Inverter Generator

    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.
  • Page 11 13. Engine Switch Start and shut down the engine (see p. 21). 4. Parallel Connection Port Connect two WEN inverter generators through a parallel 14. 2-in-1 Switch connection kit for a higher output. Turn switch to choke, run, and automatically shut off the generator.

  • Page 12: Generator Preparation

    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.
  • Page 13 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.
  • Page 14 The oil level of the engine should be checked before each Upper Limit 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 Lower Limit 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...
  • Page 15 GENERATOR PREPARATION STEP 2 - ADD / CHECK FUEL FUEL OPTION A: GASOLINE 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.
  • Page 16 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 techsupport@wenproducts.com for as- sistance.
  • Page 17 "Switching Fuels" (p. 25) for more information. 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.
  • Page 18 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. To connect the battery: Fig.
  • Page 19 GENERATOR PREPARATION STEP 4 - GROUND THE GENERATOR Fig. 15 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.

  • Page 20: Operation & Maintenance

    STARTING YOUR GENERATOR 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.
  • Page 21 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.
  • Page 22 STARTING YOUR GENERATOR Fig. 19 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. ECO-MODE 4.

  • Page 23: Using Your Generator

    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.
  • Page 24 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.
  • Page 25 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.
  • Page 26 USING YOUR GENERATOR 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. Device Requirements Max.
  • Page 27 PARALLEL OPERATION Fig. 23 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.
  • Page 28 USING YOUR GENERATOR CIRCUIT BREAKERS Fig. 25 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.
  • Page 29 • The CO sensor has a lifetime of about 7 years, and is capable of monitoring its lifetime. If your generator shows an error light several years after purchase, it may be time to replace the CO sensor. Contact WEN customer service...

  • Page 30: Shutting Off Your 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 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.
  • Page 31 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.

  • Page 32: Maintenance

    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.
  • Page 33 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...
  • Page 34 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;...
  • Page 35 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: Fig.
  • Page 36 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: Fig.
  • Page 37 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.
  • Page 38 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: Fig. 38 1. Using a Phillips-head screwdriver, remove the service panel on the opposite side of the recoil starter by unscrewing the top two screws.
  • Page 39 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.

  • Page 40: Transportation & Storage

    TRANSPORTATION & STORAGE 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.

  • Page 41: Troubleshooting Guide

    12. Turn OFF propane tank. Disconnect hose from propane fitting. Contact 12. Regulator is stuck. WEN customer service for assistance. 13. Ghost in the generator. 13. Persuade ghost to leave. Consult Bill Murray if needed.

  • Page 42: Warranty Statement

    (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.

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