Kohler 4EFCD-Low CO User Manual (English)

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Questions and Answers:

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douglas77Aug 28, 2025
How to fix a Kohler Marine Equipment that starts hard?
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  timothy75Aug 29, 2025
  If your Kohler Marine Equipment starts hard, begin by checking the battery voltage. If the voltage is low, it may be the cause. Also, inspect the backfire flame arrestor and clean or replace it if clogged. Examine the spark plugs; replace or regap them as needed. Check the spark plug wires and connections, replacing the wires if necessary. If these steps don't resolve the issue, check the compression to identify worn piston rings or valves. Finally, check the F5 fuse and ECM ground connection pin 14.
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Jose MartinezAug 28, 2025
Why does my Kohler 4EFCD-Low CO start but then shut down?
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  Kayla GallowayAug 28, 2025
  If your Kohler Marine Equipment starts but then shuts down, check the controller’s LED display for a fault shutdown code. After identifying the fault, correct it and then move the generator set master switch to OFF/RESET to reset the controller.
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David TravisAug 27, 2025
What to do if my Kohler 4EFCD-Low CO Marine Equipment cranks but does not start?
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  Mark YatesAug 27, 2025
  If your Kohler Marine Equipment cranks but doesn't start, start by checking the fuel supply. Then, inspect the spark plugs, wires, and connections, replacing or cleaning and regapping the spark plugs as necessary. Look for loose or open connections at the fuel solenoid and engine control module. Ensure the backfire flame arrestor isn't clogged by cleaning or replacing it. Verify correct controller configuration parameters, specifically the unit configuration (UC) and engine configuration (EC). Test or replace ignition system components if needed. Also, check and replace F2, F4, and F5 fuses if they are blown. For F4, check GNDs on coil. For F5, check ECM ground connection pin 14.
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Seth RichardsAug 25, 2025
How to reset controller after overcrank fault on Kohler Inverter?
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  Kathy SantosAug 26, 2025
  If there is an overcrank shutdown, reset the controller.
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kgonzalezAug 25, 2025
What to do if Kohler Inverter oil level is low?
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  Alexis FloresAug 25, 2025
  If the oil level is low, restore it to the correct level. Also, inspect the generator set for any oil leaks.