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DEK 5650 - 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
®
Owners 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:
®

Questions and Answers

  • H
    Heather MorganAug 29, 2025
    Why is fuel leaking from my DEK Inverter's carburetor?
    • C
      Charles WhitakerAug 29, 2025
      If fuel is leaking out of the carburetor of your DEK Inverter, the fuel drain screw might be loose; tighten it. Alternatively, the carburetor float seat may not be seating properly; flush it with clean fuel.
  • C
    Courtney LindseyAug 28, 2025
    Why is my DEK Inverter engine running rough?
    • V
      Vincent CooperAug 28, 2025
      If your DEK Inverter engine runs roughly, vibrates, or oscillates, here are some potential causes and solutions: Ensure the choke is fully open by pushing the choke lever in. Reduce the load on the generator by disconnecting some appliances if you're overloading it. Check the air filter and clean it if it's dirty. A clogged fuel filter can also cause this issue, so clean it. If the vacuum check valve has failed, replace it. If the head valve timing is off, it is recommended to send it to a service center.
  • J
    Jeffery JonesAug 27, 2025
    What to do if DEK Inverter starts then shuts off quickly?
    • J
      Joseph RossAug 27, 2025
      If your DEK Inverter engine starts but shuts off quickly, check the following: Ensure the oil level is adequate by consulting the owner's manual for the correct oil capacity. Verify that the fuel valve is open and the tank isn't empty. Inspect the spark plug for fouling or failure, and clean or replace it as necessary. A failed vacuum check valve could also be the problem; replace it, and call DEK for the replacement procedure.
  • A
    Ann FisherAug 27, 2025
    DEK Inverter shows voltage but no power to devices, what's wrong?
    • J
      Julia BarkerAug 27, 2025
      If your DEK Inverter shows both 240VAC and 120VAC on the voltmeter, but connected devices aren't receiving power, here's what you can check: First, try a different extension cord or power strip, as the current one may be faulty. Ensure the device you're using hasn't failed by testing with a different light bulb or device. Also, verify that the push-button breaker hasn't tripped. Finally, check the GFCI; if it's tripped, push the red reset button firmly, and if it has failed, replace it with any standard GFCI or household outlet.
  • D
    Deborah MirandaAug 25, 2025
    Why does my DEK Inverter engine bog down under load?
    • B
      Brett CurtisAug 26, 2025
      If your DEK Inverter engine runs but bogs down under load, consider these potential causes: The choke might be open, so push the choke lever in. You might be overloading the generator, in which case you should disconnect some appliances or devices. A dirty air filter or a clogged fuel filter could also be the culprit, so clean the air filter and clean the fuel filter.
  • S
    Scott CardenasAug 25, 2025
    What to do if my DEK Inverter shows voltage but no outlet power?
    • S
      stacey76Aug 25, 2025
      If your DEK Inverter's voltmeter shows 120 VAC but the outlets aren't providing power, the issue might stem from a faulty extension cord or power strip; try using a different one. Also, check the push-button breaker and reset it if it's tripped by disconnecting all loads and pushing the reset button. Similarly, examine the GFCI; if tripped, disconnect all loads and firmly push the red reset button. If the GFCI has failed, consider replacing it with any standard GFCI or household outlet.

Summary

DEK Product Lines

Generator Accessories Overview

Covers universal generator covers, motor oil, adapters, extension cords, and fuel stabilizers.

Missing Parts Request Form

Other DEK Power Equipment

Showcases other DEK heavy duty power equipment like mowers, washers, and shredders.

Warnings and Safety Precautions

Fire, Burn, and Electrocution Hazards

Details hazards related to fire, burns, electrocution, and essential safety precautions.

Carbon Monoxide Gas Hazard

Explains the dangers of carbon monoxide and safe operating locations.

Product Specifications

AC Application Safety and Operation

Provides guidelines for connecting appliances and safety precautions for operation.

Component Identification

Generator Exterior and Control Panel

Identifies exterior components and the control panel of the generator.

Assembly and Battery Setup

Wheel Kit Assembly Guide

Step-by-step instructions for assembling the wheel kit.

Battery Commissioning Procedure

Guidance on connecting and maintaining the optional battery.

Controls - DC and Battery Connections

DC Terminals and Usage Warning

Explains the generator's DC terminals and the warning about simultaneous AC/DC use.

Battery Cable Connection Steps

Detailed procedures for connecting and disconnecting the battery charging cables.

Generator Controls and Systems

Engine Starting System Operation

Describes the operation of the recoil and electric starter systems.

Fuel Valve, Oil Alert, and Grounding

Explains the fuel valve, oil alert system, and ground terminal.

Operating the Generator - Initial Steps

Carbon Monoxide Safety

Crucial safety information regarding CO hazards and proper ventilation.

Pre-Operation Checks & Fueling

Details steps for checking oil level, fuel, and proper fueling practices.

Ethanol Fuel Advisory

Important warning about using gasoline with ethanol blends.

Operating the Generator - Load & Shutdown

Generator Startup and Load Application

Steps for starting the generator and applying electrical loads.

Generator Shutdown Procedure

Procedures for safely shutting down the generator in normal and emergency situations.

Maintenance Procedures

Engine Oil and Air Cleaner Maintenance

Instructions for engine oil changes and air cleaner maintenance.

Fuel Filter and Spark Plug Service

Guidance on fuel filter cleaning and spark plug maintenance.

Maintenance, Transport, and Storage

Spark Arrestor and Fuse Checks

Procedures for cleaning the spark arrester and replacing the starter motor fuse.

Transporting and Storing the Unit

Safety precautions and procedures for moving and storing the generator.

Troubleshooting Engine Problems

Engine Wont Start or Stalls

Lists potential causes and solutions for engine starting and stalling problems.

Recoil and Quick Stalling Issues

Addresses issues with the recoil starter and engines shutting off soon after starting.

Troubleshooting Output and Leaks

No Power to Connected Devices

Solutions for when the generator runs but no power reaches connected devices.

Voltage, Leaks, and Fuel Gauge Issues

Diagnoses voltage problems, oil/fuel leaks, and fuel gauge issues.

Limited Warranty and Service

Warranty Coverage and Exclusions

Outlines the warranty period for different generator components and key exclusions.

Obtaining Warranty Service

Provides instructions on how to get warranty service and contact DEK Customer Service.

DEK 5650 Specifications

General IconGeneral
BrandDEK
Model5650
CategoryPortable Generator
LanguageEnglish

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