Wen DF400i User Manual

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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:

TECHSUPPORT@WENPRODUCTS.COM1-800-232-1195 (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

Questions and Answers:

M
melanie58Aug 1, 2025
What to do if my Wen DF400i Portable Generator runs but has no electrical output?
- J
  James RiosAug 2, 2025
  If your Wen Portable Generator runs but provides no electrical output, start by turning off and unplugging all electrical devices. Check the reset button; if it has activated due to wattage overload, press it to reset. Also, check the breaker; if it has tripped due to wattage overload, wait 3 minutes and press the activated breaker to reset. Make sure to check the total wattage of the devices and reduce the load if it exceeds the generator's capacity. Inspect power and extension cords for damage, replacing any damaged cords immediately. Finally, try connecting a different electrical device to rule out a faulty device.
K
Kristen SmallAug 7, 2025
Why is the engine RPM fluctuating on my Wen Portable Generator?
- J
  James RobertsAug 7, 2025
  If your Wen Portable Generator's engine RPM is fluctuating, it could be due to several reasons. First, make sure there is enough fuel and that the 2-in-1 switch is turned to RUN. If you're using propane, the level might be getting low, so switch to a new propane tank or use gasoline. A dirty air filter or spark arrestor can also cause this issue, so clean or replace them. Additionally, gunk in the carburetor can prevent a consistent fuel/air mixture; use carburetor cleaner spray on the carburetor bowl and jets to resolve this.

Wen DF400i Specifications

General

Brand	Wen
Model	DF400i
Category	Portable Generator
Language	English

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