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DEK 6500EL - User Manual

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DEK® is registered trademark of GXi Outdoor Power, LLC Clayton, NC 27520 USA.
No part of this publication can be printed or copied without written permission.
1 of 16 Rev. 9/2011
Heavy Duty Power Equipment
®
Owner’s Manual
This manual contains important safety instructions for gasoline
generator models: 4550Pro, 5650, 6500, 6500EL, 7550EL Pro that should be followed during installation and
maintenance of the generator and batteries
READ SAFETY WARNINGS AND OPERATING INSTRUCTIONS CAREFULLY, SAVE THESE INSTRUCTIONS.
Contents:
1. Tools and Accessories
2. DEK Product Lines
3. Missing Parts Request Form
4. Warnings
5. Warnings and Specifications
6. Component Identification
7. Wheel Kit Assembly & Commissioning the Battery
8. Commissioning the Battery
9. Controls
10. Operating the Generator
11. Operating the Generator
12. Maintenance
13. Maintenance
14. Transporting and Storage
15. Troubleshooting
16. Warranty and Service
HAVE QUESTIONS OR NEED HELP?
call 24 hrs / 7-days a week help-line: [1] 919-550-3221
or go to www.DEKPowerUSA.com
DO NOT RETURN THIS GENERATOR
TO THE STORE!
Date of Purchase: _______________________
Location of Purchase: _______________________
Serial #: _______________________
Have the following information ready when you call us:
®

Table of Contents

Questions and Answers

  • W
    William SmithSep 12, 2025
    What to do if my DEK 6500EL shows voltage but connected devices don't work?
    • M
      Mr. Logan BuckleySep 12, 2025
      If your DEK Portable Generator runs and the voltmeter shows 240VAC and 120VAC, but no power goes to connected devices, try these solutions: * The extension cord or power strip could be bad. Try a different or shorter extension cord or a different power strip. * The connected device may have failed. Try a different light bulb or device. * The push button breaker may have tripped. Push the button to reset it. * The GFCI might have tripped. Push the red reset button very deep/firmly. * The GFCI may have failed. Replace the GFCI with any GFCI or household outlet.
  • J
    jordanleeSep 9, 2025
    How to fix a DEK 6500EL that runs but has no power at the outlets?
    • E
      Eric CoxSep 9, 2025
      If your generator runs and the voltmeter shows 120 VAC, but there's no power at the outlets, consider these solutions: * The extension cord or power strip may be faulty. Try a different or shorter extension cord or a different power strip. * The push-button breaker may have tripped. Disconnect all loads and push the reset button. * The GFCI may have tripped. Disconnect all loads and push the red reset button firmly. * The GFCI may have failed. Replace the GFCI with any GFCI or household outlet.
  • C
    Crystal KellerSep 8, 2025
    What to do if my DEK Portable Generator engine runs, but bogs down under load?
    • T
      Thomas HoffmanSep 8, 2025
      If your DEK Portable Generator engine runs, but bogs down under load, consider the following: * The spark arrestor may be dirty. Remove, clean, and replace it. * The choke might be open. Push the choke lever in. * The generator might be overloaded. Disconnect some appliances or devices to reduce the load. * The air filter may be dirty. Clean the air filter. * The fuel filter might be clogged.
  • J
    Justin BuckAug 23, 2025
    How to fix a DEK Inverter when it won't start?
    • B
      brianbowenAug 23, 2025
      If your DEK Inverter engine won't start, several factors could be at play. First, ensure the fuel valve is on and the tank isn't empty; if not, fill the tank and turn the valve on. Check the spark arrestor for clogs and clean it if necessary. Make sure the choke is closed during starting, and open it afterward. A failed vacuum check valve, a broken on/off switch, or low oil level can also prevent starting. Verify the oil switch/sensor functionality. Additionally, inspect the fuel filter and spark plug for dirt or damage, cleaning or replacing them as needed. Lastly, a clogged carburetor might be the culprit, requiring cleaning with fresh fuel.
  • M
    Melvin WilliamsSep 6, 2025
    What to do if my DEK 6500EL engine starts, but then shuts off quickly?
    • A
      Amanda AdamsSep 6, 2025
      If your generator starts but shuts off within 10 seconds, consider these potential causes: * The spark arrestor may be dirty. Remove, clean, and replace it. * The oil level may be too low. The engine is designed to shut down when oil levels are insufficient. Check your owner's manual for the correct oil capacity. * The fuel valve may be off, or the generator may be out of fuel. Fill the tank and turn the fuel valve on. * The spark plug may be fouled or defective. Remove, clean, or replace the spark plug. * The vacuum check valve may have failed. Replace the check valve.
  • D
    Deborah AllenSep 4, 2025
    How to fix a leaking fuel gauge on a DEK Inverter?
    • B
      Bradley PughSep 4, 2025
      To address a fuel gauge leak in your DEK Inverter, replace the fuel gauge gasket.
  • S
    Sara MillerSep 3, 2025
    What to do if the choke wire broke on my DEK Inverter?
    • K
      Kevin JonesSep 3, 2025
      If the choke wire on your DEK Inverter is broken, remember that the choke should be closed while starting. Pull the black choke counter-clockwise and hold it in place with a wire.
  • R
    Robert RamirezSep 2, 2025
    Why is oil leaking from the valve head cover on my DEK Inverter?
    • T
      Tammy FarrellSep 2, 2025
      If oil is leaking from the valve head cover of your DEK Inverter, the bolts might not be tight enough. Tighten the bolts to resolve the leak.
  • P
    Penny JohnsonAug 31, 2025
    Why is fuel leaking at the tank shut-off of my DEK Inverter?
    • B
      Bethany HenrySep 1, 2025
      If you notice a fuel leak at the tank shut-off of your DEK Inverter, the shut-off valve might be loose. Try tightening the nut on the shut-off valve. If that doesn't solve the problem, consider replacing the shut-off valve.
  • C
    claudia93Aug 30, 2025
    Why is my DEK Inverter leaking engine oil?
    • R
      Ryan HodgesAug 31, 2025
      If your DEK Inverter is leaking engine oil, check for leaks from the crankcase. If the oil is leaking from crankcase, tighten the crankcase bolts. If the oil is leaking from the shaft, it may indicate that the oil seals have failed.

Summary

Owners Manual Introduction and Support

Generator Model Identification

Lists the specific gasoline generator models covered by this manual.

Customer Support Information

Provides a helpline number and website for questions and assistance.

Important Customer Notice

Instructs users not to return the generator to the store for issues.

DEK Product Lines and Accessories

Universal Generator Cover

Describes a protective cover for DEK generators.

SAE 10 W30 Motor Oil

Recommends specific engine oil for DEK generators.

Generator Adapters and Extension Cords

Details adapters and extension cords for generator use.

Fuel Stabilizer for Storage

Explains the use of fuel stabilizer for fuel freshness.

Additional DEK Products and Parts Service

Other DEK Heavy Duty Equipment

Showcases other DEK equipment like mowers and pressure washers.

Missing Parts Request Form and Contact

Provides a form and contact details for requesting missing parts.

Critical Safety Warnings and Hazards

California Proposition 65 Warning

Alerts about chemicals in exhaust known to cause cancer or reproductive harm.

Carbon Monoxide Gas Hazard

Warns about the deadly, odorless gas produced by the generator exhaust.

Electrocution Hazard Precautions

Advises on preventing electrical shock, especially in wet conditions.

Building Electrical Connection Safety

Emphasizes professional installation for building electrical connections.

Operating Precautions and Specifications

AC Application Safety Guidelines

Guidelines for connecting appliances to ensure safety and prevent damage.

Maintenance and Operation Safety

Stresses following maintenance and safety recommendations.

Product Specifications Table

Detailed technical data for different generator models.

Component Identification

Generator Exterior Components

Identifies key parts on the generator's exterior.

Control Panel and Outlets

Locates and labels all controls, receptacles, and indicators.

Generator Chassis and Engine Parts

Identifies components related to the generator's frame and engine.

Assembly and Battery Commissioning

Wheel Kit Assembly Instructions

Step-by-step guide for attaching the wheel kit.

Commissioning the Battery

Instructions for connecting and maintaining the optional battery.

DC Terminals and Battery Cable Management

DC Terminals and Charging Cables

Describes the 12V DC receptacle and battery charging connections.

Connecting and Disconnecting Battery Cables

Detailed steps for safely connecting and disconnecting the battery.

Engine Controls and Alerts

Choke, Fuel Valve, and Oil Alert System

Explains the function and operation of choke, fuel valve, and oil alert.

Starting Systems and Ground Terminal

Details recoil and electric start methods and ground terminal usage.

Operating the Generator - Initial Steps

Carbon Monoxide Safety During Operation

Reiterates critical safety advice for generator use.

Pre-Operation Checks

Steps for checking oil and fuel levels before starting.

Fueling and Ethanol Warning

Guidelines for safe refueling and warnings about ethanol fuel.

Generator Operation and Load Application

Starting and Warming Up the Generator

Steps for starting the engine and allowing it to warm up.

Applying Electrical Loads

How to connect and manage appliances for optimal performance.

Stopping the Generator

Procedures for safely shutting down the generator.

Routine Maintenance

Importance of Maintenance and Schedule

Explains why maintenance is crucial and references the schedule.

Engine Oil Change Procedure

Step-by-step guide for changing the engine oil.

Air Cleaner Service

Instructions for cleaning or replacing the air cleaner element.

Spark Plug Service

Details on inspecting, cleaning, and replacing the spark plug.

Maintenance Details and Transport

Spark Plug Gapping and Installation

Proper methods for checking spark plug gap and installation.

Optional Spark Arrestor Maintenance

Procedure for cleaning the spark arrestor.

Starter Motor Fuse Replacement

Information on how to replace a blown starter fuse.

Transporting and Storing the Generator

Safety guidelines and procedures for moving and storing the generator.

Troubleshooting Common Issues

Engine Not Starting or Catching

Solutions for ignition and fuel delivery problems.

Recoil Starter Problems

Troubleshooting for hard-to-pull or non-retracting recoil starters.

Engine Shuts Off Prematurely

Addresses issues causing the engine to stop shortly after starting.

Rough Engine Operation or Bogging

Solutions for vibrating engines or performance loss under load.

No Power to Outlets

Diagnosing why outlets are not providing power despite engine running.

Advanced Troubleshooting

Power Output and Voltage Issues

Diagnosing problems with voltage output or no power to devices.

Leaks and Starting Difficulties

Troubleshooting fuel or oil leaks and recoil issues.

Limited Warranty and Service Information

Warranty Coverage and Qualification

Details what is covered, for how long, and how to qualify.

Obtaining Service and Warranty Exclusions

Procedures for getting service and limitations of the warranty.

DEK 6500EL Specifications

General IconGeneral
Starting Watts6500
Running Watts5500
Fuel TypeGasoline
Displacement389cc
Fuel Tank Capacity6.6 Gallons
Engine Type4-stroke, OHV
Starting SystemElectric Start
AC Output120V/240V
DC Output12V/8.3A

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