Wen DF450i

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.
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4500W DUAL FUEL
INVERTER GENERATOR
Instruction Manual
MODEL DF450i

Wen DF450i Specifications

General

Fuel Type	Gasoline
AC Voltage	120/240 V
Frequency	60 Hz
Engine Type	4-Stroke OHV
Starting System	Recoil
Outlets	One 120V/240V Twist-Lock Outlet
Noise Level	68 dB at 23 feet

Summary

Specifications

Generator Specifications

Detailed specifications for the WEN 4500W Dual Fuel Inverter Generator.

Engine Specifications

Technical details regarding the generator's engine, including type, displacement, and oil capacity.

Introduction and Service Record

Service Record Log

Log for recording generator maintenance dates and service history.

Safety Information

Safety Introduction

General overview of safety principles and manual importance.

Safety Symbols Explained

Explanation of danger, warning, and caution symbols used in the manual.

Emissions Notice

Information regarding the generator's compliance with emission regulations.

Customer Support Contact

Contact information for questions and problems.

Generator Safety Warnings

Carbon Monoxide Danger

Critical warning about the deadly risk of carbon monoxide indoors.

Explosion and Flammability Risk

Warnings about flammable gasoline vapors and ignition sources.

Electrical System Connection Warning

Safety requirements for connecting the generator to building wiring systems.

California Proposition 65 Warning

Notice about chemicals known to cause cancer and reproductive harm.

Unpacking and Packing List

Unpacking Instructions

Steps for safely removing the generator from its packaging.

Packing List Contents

List of all components and accessories included with the generator.

Know Your Generator

Generator Purpose and Overview

Explanation of the inverter generator's purpose and general function.

Generator Components Diagram

Labeled illustration identifying key parts of the generator.

Control Panel Overview

Generator Preparation: Mounting Plates

Remove Mounting Plates

Instructions for removing shipping plates before generator operation.

Generator Preparation: Adding and Checking Oil

Add or Check Engine Oil

Procedure for adding the correct type and amount of oil to the engine.

Generator Preparation: Oil Level Checks

Check Oil Level Regularly

How to check oil level before each use and understand low-oil shutdown.

Low Oil Level Shutdown Feature

Explanation of the automatic engine shutdown due to low oil.

Generator Preparation: Adding Fuel

Add or Check Gasoline

Procedure for adding fresh, unleaded gasoline to the fuel tank.

Generator Preparation: LPG Fuel Option

Connect LPG Cylinder

Steps for connecting the generator to an LPG cylinder and checking for leaks.

Generator Preparation: Auto Fuel Selection

Auto Fuel Selection Technology

Explanation of how the generator automatically selects between LPG and gasoline.

Generator Preparation: Grounding and High Altitude

Ground the Generator

Procedure for grounding the generator to reduce electric shock risk.

High Altitude Operation

Information on using altitude kits for operation above 3000 feet.

Starting Your Generator

Starting Your Generator: Initial Steps

Pre-Start Checks

Essential checks before starting the generator, including location and grounding.

Start Generator (Gasoline)

Step-by-step guide to starting the generator using gasoline.

Starting Your Generator: LPG Operation

Start Generator (LPG)

Step-by-step guide to starting the generator using LPG.

Using Your Generator: Wattage Calculation

Calculate Device Wattage

How to determine the running and starting wattage of connected devices.

Using Your Generator: Device Wattage Examples

Estimated Wattages of Appliances

Reference table for estimated wattage requirements of common electrical appliances.

Using Your Generator: Connecting Devices

Connect Electrical Devices Safely

Procedure for connecting devices, starting with highest wattage.

Using Your Generator: Power Cords and Fuel

Power Cord Guidelines

Recommendations for selecting appropriate power cords and their maximum lengths.

Switching Between Fuels

Guidance on how to switch between gasoline and LPG for optimal lifespan.

Using Your Generator: Features and Overload

Eco-Mode Switch Function

Explanation of the Eco-Mode for fuel efficiency and extended runtime.

Parallel Operation

How to connect two generators for increased power output.

Handling Generator Overload

Steps to take when the generator is overloaded, including indicator lights.

Using Your Generator: Circuit Breakers and Meter

Circuit Breaker Protection

Explanation of AC and DC circuit breakers and how to reset them.

Multi-Meter Functions

Details on the generator's multi-meter displaying voltage, frequency, and runtime.

Shutting Off Your Generator

Automatic Fuel Shutoff (Gasoline)

Procedure for automatic shutdown using fuel to prolong carburetor life.

Automatic Fuel Shutoff (LPG)

Procedure for automatic shutdown with LPG for safe operation.

Manual Shutoff Procedure

Method for quickly shutting off the generator manually.

Generator Maintenance

Generator Maintenance Tips

Key tips for maintaining the generator's lifespan and performance.

Cleaning the Generator Exterior

Instructions for cleaning the generator's body and ventilation openings.

Generator Maintenance: Oil Checks

Check and Add Engine Oil

Procedure for checking and refilling engine oil levels.

Generator Maintenance: Carburetor

Drain the Carburetor

Procedure for draining the carburetor to prevent fuel clogging.

Generator Maintenance: Air Filter and Spark Arrestor

Air Filter Maintenance

Instructions for inspecting and cleaning the air filter element.

Spark Arrestor Maintenance

Procedure for inspecting and cleaning the spark arrestor.

Generator Maintenance: Spark Plug

Spark Plug Maintenance

How to inspect, clean, gap, and replace the spark plug.

Generator Maintenance: Oil Change

Drain and Change Engine Oil

Step-by-step guide for draining and refilling engine oil.

Generator Maintenance: Fuel Tank

Drain the Fuel Tank

Procedure for draining the fuel tank and carburetor before storage.

Transportation and Storage

Transporting the Generator

Guidelines for safely transporting the generator to prevent spills and damage.

Storing the Generator

Recommended procedures for short-term and extended storage.

Product Disposal

Information on responsible disposal of the generator and its components.

Troubleshooting Guide

Engine Start Issues

Common causes and solutions for when the engine fails to start.

No Electrical Output

Troubleshooting steps for when the generator runs but produces no power.

Insufficient Load Support

Resolving issues where the generator cannot power connected devices.

Engine RPM Fluctuations

Diagnosing and fixing engine 'hunting' or fluctuating RPMs.