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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
®
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

  • M
    Melissa McdanielSep 12, 2025
    What to do if my DEK Portable Generator shows voltage but connected devices don't work?
    • C
      Colin MartinezSep 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.
  • R
    Rodney MosesSep 9, 2025
    How to fix a DEK 5650 Portable Generator that runs but has no power at the outlets?
    • M
      Michael 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.
  • M
    Michael HowardSep 8, 2025
    What to do if my DEK Portable Generator engine runs, but bogs down under load?
    • M
      Michelle WoodsSep 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.
  • M
    martin49Aug 23, 2025
    How to fix a DEK Inverter when it won't start?
    • J
      Jorge RodriguezAug 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.
  • J
    Jennifer ConradSep 6, 2025
    What to do if my DEK 5650 engine starts, but then shuts off quickly?
    • W
      William PetersonSep 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
    Karen RodriguezSep 4, 2025
    How to fix a leaking fuel gauge on a DEK Inverter?
    • G
      Gina HernandezSep 4, 2025
      To address a fuel gauge leak in your DEK Inverter, replace the fuel gauge gasket.
  • A
    Anthony JohnstonSep 3, 2025
    What to do if the choke wire broke on my DEK Inverter?
    • J
      John SanchezSep 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.
  • A
    Amanda PonceSep 2, 2025
    Why is oil leaking from the valve head cover on my DEK Inverter?
    • A
      aaronleeSep 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.
  • B
    Brian FlynnSep 1, 2025
    Why is fuel leaking at the tank shut-off of my DEK Inverter?
    • K
      Keith ThompsonSep 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.
  • J
    Jessica SuttonAug 30, 2025
    Why is my DEK Inverter leaking engine oil?
    • K
      Karen PenaAug 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

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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