DUROMAX XP12000EH User Manual (English)

Questions and Answers:

M
Michael AdamsJul 27, 2025
Why DUROMAX Portable Generator engine will not start?
- S
  solisrobertJul 27, 2025
  If your DUROMAX Portable Generator's engine won't start, several factors could be at play. It could be something as simple as the engine switch being in the “Off” position, in which case you should set it to “On”. Alternatively, the fuel valve might be “Closed”; turn it to “Open”. Other potential causes include an open choke (close the choke), an empty fuel tank (add fuel), old or contaminated fuel (change fuel), a dirty spark plug (clean it), a broken spark plug (replace it), the generator not being level (move it to a level surface), or low oil (add/change the oil).
D
David WoodAug 6, 2025
What to do if my DUROMAX Portable Generator runs, but there is no electrical output?
- J
  Jeanne MitchellAug 6, 2025
  If your DUROMAX Portable Generator runs but provides no electrical output, the issue might be a circuit breaker that is “Off” (turn it “On”). Another cause may be a bad wiring connection, so replace the extension cord(s). Lastly, the device connected to the generator could be malfunctioning, so disconnect it.
B
Bradley HernandezAug 16, 2025
How to troubleshoot a DUROMAX Portable Generator that runs but does not support all electrical devices connected?
- T
  Tommy JohnsonAug 16, 2025
  If your DUROMAX Portable Generator runs but can't support all connected devices, it might be overloaded. Disconnect one or more items to reduce the load. A malfunctioning device connected to the generator could also be the problem; disconnect it. Lastly, check if the air filter is dirty and clean or replace it.

DUROMAX XP12000EH Specifications

General

Fuel Tank Capacity	8.3 Gallons
Weight	224 lbs
Starting System	Electric/Recoil Start
AC Output	12000W peak, 9500W running
DC Output	12V, 8.3A
Warranty	3-year limited
Engine Type	457cc OHV 4-stroke

Summary

General Safety Procedures

Safety Alert Symbol and Key Words

Carbon Monoxide Hazard Warning

Details the danger of poisonous, odorless carbon monoxide gas produced by the generator.

Exhaust Chemical Hazard Warning

Alerts to California-specific hazards related to exhaust chemicals in the product.

Heat Hazard Warning

Warns about high surface temperatures near the generator's exhaust exceeding 150°F (65°C).

General Safety Procedures (Continued)

Flammable Vapor Hazard and Precautions

Warns about explosive gasoline vapors and precautions against ignition sources like open flames.

Gasoline Tank Overfill Hazard

Details the danger of overfilling the gas tank, potentially causing fire or explosion.

High Temperature Warning

Advises against touching hot surfaces of the generator due to high operating temperatures.

Electrocution Hazard and Grounding

Highlights the risk of electrocution and the necessity of proper grounding and electrical connections.

Hot Exhaust Hazard and Safe Distance

Warns about hot exhaust gases and the need to maintain a safe distance to prevent burns.

Carbon Monoxide Safety Essentials

Identifying Carbon Monoxide Symptoms

Lists common symptoms of carbon monoxide poisoning, such as headache, nausea, and dizziness.

Key Carbon Monoxide Safety Precautions

Emphasizes using detectors, outdoor operation, and proper ventilation to mitigate CO risks.

Generator Components Overview

Generator Components Identification (Part 1)

Component Identification (1-12)

Generator Components Identification (Part 2)

Component Identification (13-23)

Generator Setup Introduction

Generator Setup: Removing Braces

Step 1: Remove Shipping Braces

Generator Setup: Wheel Kit Installation (Part 1)

Step 2: Wheel Kit Installation (Part 1)

Generator Setup: Wheel Kit Installation (Part 2)

Step 2: Wheel Kit Installation (Part 2)

Generator Setup: Battery Connection

Step 3: Connect the Battery

Generator Setup: Adding Engine Oil

Step 4: Adding Engine Oil

Explains the procedure for adding the correct type and amount of engine oil, including capacity and viscosity recommendations.

Generator Setup: Adding Gasoline

Step 5: Adding Gasoline

Details how to add unleaded gasoline to the fuel tank, including capacity and essential safety precautions.

Generator Setup: Grounding Procedure

Step 6: Grounding the Generator

Covers the critical process of grounding the generator to prevent electrocution and discusses high altitude operation.

Starting the Generator Introduction

Starting the Generator: Pre-Start Checks

Step 1: Check the Oil Level

Describes how to verify the engine oil level before starting the generator, noting oil capacity.

Starting the Generator: Fuel Check

Step 2: Check the Fuel Level

Explains how to check the gasoline level in the tank and highlights related safety warnings.

Starting the Generator: Using Gasoline (Part 1)

Starting with Gasoline: Initial Steps

Covers initial steps for gasoline start: shut breaker OFF, turn gas valve ON, close choke, turn idle control OFF.

Starting the Generator: Using Gasoline (Part 2)

Starting with Gasoline: Final Steps

Completes gasoline start: turn engine switch to START, open choke, turn breaker ON/Connect devices.

Starting the Generator: Using Propane (Part 1)

Starting with Propane: Initial Steps

Details initial steps for propane start: shut breaker OFF, turn gas valve OFF, connect propane hose/tank, turn idle control OFF.

Starting the Generator: Using Propane (Part 2)

Starting with Propane: Final Steps

Completes propane start: close choke, turn engine switch to START, open choke, turn breaker ON/Connect devices.

Starting the Generator: Propane Safety

Propane Start Safety Precautions

Emphasizes safety precautions for propane use, including leak checks and proper shutdown procedures.

Starting the Generator: Recoil Start (Part 1)

Starting with Recoil Start: Initial Steps

Outlines initial steps for recoil start: shut breaker OFF, select fuel, close choke, turn engine switch to ON.

Starting the Generator: Recoil Start (Part 2)

Starting with Recoil Start: Final Steps

Completes recoil start: turn idle control OFF, pull recoil start, open choke, turn breaker ON/Connect devices.

Using the Generator Introduction

Using the Generator: AC Power

AC Usage Overview and Wattage

Using the Generator: Load Management

Appliance Wattage Guide

Connecting Loads and Balancing Generator Output

Connecting Loads and Balancing

Using the Generator: DC Power

DC Usage: Battery Charging Procedure

Using the Generator: DC Safety

DC Usage: Safety and Disconnection

Generator Advanced Features

Voltage Selector Switch Explained

Idle Control Function Guide

Maintenance and Care Introduction

Maintenance and Care: Schedules

Routine Maintenance Schedule

Maintenance and Care: Break-In and Logs

Maintenance and Care: Checking Oil

Checking Engine Oil Level

Maintenance and Care: Changing Oil

Changing Engine Oil Procedure

Maintenance and Care: Air Filter Cleaning

Cleaning the Air Filter Element

Maintenance and Care: Air Filter Steps

Air Filter Maintenance Steps

Maintenance and Care: Spark Plug

Spark Plug Inspection and Gapping

Maintenance and Care: Spark Plug Service

Spark Plug Maintenance Steps

Maintenance and Care: Emptying Fuel Tank

Emptying the Fuel Tank for Storage

Maintenance and Care: Fuel Tank Emptying

Fuel Tank Emptying Procedure

Maintenance and Care: Fuel Filter

Cleaning the Fuel Filter Cup

Troubleshooting Introduction

Troubleshooting Common Issues

Troubleshooting Common Problems

Troubleshooting: Carbon Brushes

Changing Carbon Brushes

Troubleshooting: Carbon Brushes Replacement

Carbon Brushes Replacement Steps

Troubleshooting: AVR Inspection

Inspecting or Replacing the AVR

Troubleshooting: AVR Replacement

AVR Replacement Steps

Troubleshooting: AVR Replacement Completion

AVR Replacement Completion

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