DUROMAX XP4400EH User Manual (English)

Questions and Answers:

D
Donna BarrJul 27, 2025
How to fix a DUROMAX XP4400EH when the engine will not start?
- L
  Luis DeanJul 27, 2025
  If your DUROMAX Inverter engine won't start, there are several potential causes. First, ensure the Engine Switch is set to "Run." Next, check that the Fuel Valve is "Open." Also, make sure the choke is closed. If these aren't the issue, consider that the engine might be out of fuel, or the fuel could be old or contaminated, requiring a fuel change. A dirty or broken spark plug can also prevent starting, so clean or replace it as needed. Additionally, ensure the generator is on a level surface and that the oil level is sufficient, adding or changing oil if low.
A
Anthony SteeleAug 5, 2025
What to do if my DUROMAX XP4400EH Inverter runs, but does not support all electrical devices connected?
- L
  Lindsey SalazarAug 5, 2025
  If your DUROMAX Inverter runs but doesn't support all connected electrical devices, it might be overloaded. To resolve this, disconnect one or more items to reduce the load. Also, a malfunctioning device can cause this issue, so try disconnecting devices one by one to identify any problems. Lastly, a dirty air cleaner can affect performance, so clean or replace the air filter.
J
Jaclyn KlineAug 16, 2025
Why does my DUROMAX XP4400EH Inverter engine run, but there is no electrical output?
- G
  griffithmichaelAug 16, 2025
  If your DUROMAX Inverter engine runs but there's no electrical output, the Circuit Breaker might be off; turn it "On". A bad wiring connection could also be the culprit, so replace the extension cord(s). Finally, a malfunctioning device connected to the generator can cause this issue, so disconnect any device that might be faulty.

DUROMAX XP4400EH Specifications

General

Power Output	4400 Watts
Starting Watts	4400 Watts
Running Watts	3500 Watts
Fuel Type	Gasoline
Run Time	8 hours at 50% load
DC Output	12V/8.3A
Fuel Tank Capacity	3.96 gallons
Engine Type	4-Stroke
Start Type	Recoil
Starting System	Electric/Recoil Start
Rated AC Output	3, 500 Watts
Max AC Output	4400 Watts
Outlets	1 x 12V DC

Summary

Features

General Safety Procedures

Carbon Monoxide Danger

Generator exhaust produces toxic carbon monoxide gas; use outdoors only.

California Emissions Warning

Exhaust contains chemicals known to cause cancer, birth defects, or reproductive harm.

Explosive Vapor Warning

Flammable gasoline vapors can cause severe burns or death; avoid open flames.

Electrical Shock Hazard

Generator produces powerful voltage, risking electrocution; ensure proper grounding.

Heat Hazard Warning

Generator produces heat; exhaust can exceed 150°F; allow cooling before touching.

Misuse Caution

Misusing the generator can cause damage or shorten its lifespan; use for intended purposes.

Hazard Markings Overview

Familiarize yourself with safety and hazard markings on the generator for safe operation.

Package Contents

Generator Components

Preparing the Generator for Use

Add Engine Oil

Instructions for adding the correct type and amount of engine oil before first use.

Add Gasoline

Procedure for adding fresh, unleaded gasoline with an octane rating of 87 or higher.

Ground the Generator

Instructions on how to properly ground the generator to prevent electrocution.

Subsequent Use of the Generator

Check the Oil Level

Procedure to check engine oil level before each use to ensure proper lubrication.

Check the Gas Level

Procedure to check gasoline level in the tank before starting the generator.

Starting the Generator: Gasoline

Stopping the Engine

Instructions for safely stopping the generator in both normal use and emergency situations.

Starting the Generator: Propane

Stopping the Engine

Instructions for safely stopping the generator when using propane, including emergency and normal use.

Using the Generator

AC Usage

Information on connecting AC devices, understanding rated and surge wattage, and calculating requirements.

Estimated Wattage Requirements

Table providing estimated wattage requirements for common electrical devices to help load calculation.

Connecting a Load to the Generator

Instructions on how to connect electrical devices to the correct receptacles and manage wattage.

Voltage Selector Switch

Explanation of the voltage selector switch and its function in changing generator output.

Choosing the Right Power Cord

Guidance on selecting appropriate power cords based on amperage, wattage, and length.

DC Usage

Maintenance and Care

Maintenance Schedule

Detailed schedule for engine oil, air cleaner, spark plug, and other components' service intervals.

Checking the Oil

Procedure for checking the engine oil level before each use to ensure proper lubrication.

Changing the Oil

Instructions for draining and refilling the crankcase with the recommended engine oil.

Air Cleaner Maintenance

Steps for cleaning and maintaining the air cleaner element for optimal engine performance.

Fuel Filter Cup Cleaning

Procedure for cleaning the fuel filter cup to trap dirt and water before it enters the engine.

Spark Plug Maintenance

Guide to inspecting, cleaning, gapping, and replacing the spark plug for engine operation.

Emptying the Gas Tank

Procedure for draining the gasoline tank before storing the generator for extended periods.

Storage and Transportation

Generator Specifications

Troubleshooting

Wheel Kit Assembly

Changing/Inspecting the Carbon Brushes

Changing/Inspecting the AVR

Wiring Diagram

Engine Parts

Other Generator Parts

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62 pages

DUROMAX XP4400EH User Manual

Table of Contents

Questions and Answers:

DUROMAX XP4400EH Specifications

Summary

Features

General Safety Procedures

Carbon Monoxide Danger

California Emissions Warning

Explosive Vapor Warning

Electrical Shock Hazard

Heat Hazard Warning

Misuse Caution

Hazard Markings Overview

Package Contents

Generator Components

Preparing the Generator for Use

Add Engine Oil

Add Gasoline

Ground the Generator

Subsequent Use of the Generator

Check the Oil Level

Check the Gas Level

Starting the Generator: Gasoline

Stopping the Engine

Starting the Generator: Propane

Stopping the Engine

Using the Generator

AC Usage

Estimated Wattage Requirements

Connecting a Load to the Generator

Voltage Selector Switch

Choosing the Right Power Cord

DC Usage

Maintenance and Care

Maintenance Schedule

Checking the Oil

Changing the Oil

Air Cleaner Maintenance

Fuel Filter Cup Cleaning

Spark Plug Maintenance

Emptying the Gas Tank

Storage and Transportation

Generator Specifications

Troubleshooting

Wheel Kit Assembly

Changing/Inspecting the Carbon Brushes

Changing/Inspecting the AVR

Wiring Diagram

Engine Parts

Other Generator Parts

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