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DEK 6500 - 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

  • C
    Crystal KnoxSep 12, 2025
    What to do if my DEK 6500 Portable Generator shows voltage but connected devices don't work?
    • P
      Peggy ContrerasSep 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.
  • S
    Steven GordonSep 9, 2025
    How to fix a DEK 6500 Portable Generator that runs but has no power at the outlets?
    • J
      joshua07Sep 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.
  • R
    Richard JacksonSep 8, 2025
    What to do if my DEK Portable Generator engine runs, but bogs down under load?
    • D
      Diana TorresSep 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.
  • W
    William JacobsAug 23, 2025
    How to fix a DEK Inverter when it won't start?
    • A
      Ariel WelchAug 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.
  • D
    Diana MartinezSep 6, 2025
    What to do if my DEK Portable Generator engine starts, but then shuts off quickly?
    • D
      Derek SheaSep 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.
  • K
    Kelly ByrdSep 4, 2025
    How to fix a leaking fuel gauge on a DEK Inverter?
    • D
      Dylan WilliamsSep 4, 2025
      To address a fuel gauge leak in your DEK Inverter, replace the fuel gauge gasket.
  • J
    James RaymondSep 3, 2025
    What to do if the choke wire broke on my DEK Inverter?
    • M
      Margaret VelasquezSep 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.
  • C
    Cody HeathSep 2, 2025
    Why is oil leaking from the valve head cover on my DEK Inverter?
    • A
      Adam WalkerSep 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.
  • E
    Erin SantosSep 1, 2025
    Why is fuel leaking at the tank shut-off of my DEK Inverter?
    • C
      catherine15Sep 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.
  • R
    Ralph WilliamsAug 30, 2025
    Why is my DEK Inverter leaking engine oil?
    • P
      Peter LoganAug 30, 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

Safety Warnings and Operating Instructions

Read safety warnings and operating instructions carefully and save them.

Generator Information and Contact

Details generator models and provides contact information for support.

DEK Product Lines

Universal Generator Cover

Protective cover for generators to shield from weather, dust, and dirt.

SAE 10 W30 Motor Oil

Premium high-performance oil recommended for DEK generators.

Generator Accessories

Includes adapters, extension cords, and fuel stabilizer for generator use.

Missing Parts Request and Other Products

Other DEK Products

Overview of other outdoor power equipment offered by DEK.

Missing Parts Request Form

Form to request missing parts with contact information for support.

Safety Warnings and Hazards

California Proposition 65 Warning

Engine exhaust contains chemicals known to cause cancer or birth defects.

Fire, Burn, and CO Hazards

Precautions for fire, burns, and carbon monoxide poisoning from engine exhaust.

Electrocution and Grounding Safety

Safety instructions for preventing electrocution and ensuring proper grounding.

AC Applications and Safety Precautions

AC Application Safety

Guidelines for connecting appliances to the generator safely.

Maintenance Safety Precautions

Safety measures to follow before performing maintenance or repairs.

Product Specifications

Detailed technical specifications for various DEK generator models.

Component Identification

Generator Top View Identification

Identifies key components visible from the top of the generator.

Generator Control Panel and Bottom View

Details the control panel layout and identifies components on the lower section.

Wheel Kit Assembly and Battery Commissioning

Wheel Kit Assembly

Step-by-step guide for assembling the wheel kit onto the generator.

Battery Commissioning

Instructions for preparing and connecting the optional battery.

Battery Maintenance

Routine maintenance tips to ensure battery good condition and service life.

Generator Controls and Battery Connections

DC Terminals and Usage

Information on DC terminals, 12V receptacle, and cigarette lighter outlet.

Connecting Battery Cables

Procedure for correctly connecting battery charging cables to the generator.

Disconnecting Battery Cables

Procedure for safely disconnecting battery charging cables from the generator.

Engine Controls and Starting Systems

Engine Oil and Fuel Valve

Instructions on checking engine oil and operating the fuel valve.

Choke, Oil Alert, and Grounding

Explanation of choke operation, oil alert system, and ground terminal usage.

Engine Starting Systems

Details on using the recoil starter and electric starter.

Operating the Generator: Preparation

Carbon Monoxide and Ethanol Warnings

Critical safety warnings regarding CO gas and ethanol fuel use.

Pre-Operation Checks

Steps for checking electrical loads, oil level, and fuel before starting.

Operating the Generator: Running and Stopping

Starting and Applying Loads

Procedure for starting the engine, warm-up, and connecting electrical loads.

Maximum Load Calculation

How to determine the maximum safe load and understand appliance surge requirements.

Stopping the Generator

Step-by-step instructions for safely shutting down the generator.

Generator Maintenance

Maintenance Schedule and Parts

Schedule for regular maintenance and recommendations for genuine parts.

Engine Oil Change Procedure

Detailed steps for draining, refilling, and checking engine oil.

Air Cleaner, Fuel Filter, and Spark Plug Service

Instructions for servicing air cleaner, fuel filter, and spark plug.

Advanced Maintenance and Storage

Spark Plug Inspection and Tightening

Details on inspecting spark plug condition, gapping, and proper installation.

Spark Arrestor and Fuse Maintenance

Procedures for cleaning the spark arrestor and replacing the starter fuse.

Transporting and Storing the Generator

Guidelines for safely transporting and preparing the generator for storage.

Troubleshooting Generator Problems

Engine Starting and Running Issues

Diagnosing and resolving problems with engine start, rough running, or shutdown.

Load and Power Output Issues

Troubleshooting issues related to generator load capacity and power delivery.

Advanced Troubleshooting

No Power to Devices; Phase Issues

Diagnosing issues with power delivery and voltage inconsistencies.

Engine Leaks and Fuel System Issues

Troubleshooting oil and fuel leaks, and fuel system blockages.

Recoil and Fuel Gauge Problems

Resolving issues with the recoil starter and fuel gauge leaks.

Limited Warranty and Service

Warranty Coverage and Eligibility

Details on products covered, warranty length, and qualifying purchase requirements.

Service Procedures and Exclusions

How to obtain service, common exclusions, and emission control warranty.

DEK 6500 Specifications

General IconGeneral
BrandDEK
Model6500
CategoryPortable Generator
LanguageEnglish

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