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Onan Generator Repair

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Are you looking for some tips on how to repair your Onan generator? If the answer is yes, then you are in luck, since what follows is a quick and simple guide on the basics of troubleshooting and DIY repair. And if none of the tricks that we are about to teach you work, you will find information on how to find local repair shops and certified repair services.

Onan Generator Troubleshooting


Every generator brand has its distinct characteristics, which means that your best course of action is to find out which are some of their most common issues. When it comes to Onan generators, they include the engine, the generator’s displays and oxidizing. Here are the things you should check to determine which one is causing the problem.

If the generator only works while you are pressing the “On” button, it means that there is probably something wrong with the engine. This could be due to it not passing along the necessary voltage. In order to confirm that this is the cause of the problem, plug a voltage meter directly into the generator’s regulator and see what amount of voltage it reads.

If the display lights aren’t working, it doesn’t mean that there is anything wrong with the rest of the device. The issue might be caused by a tripped circuit breaker, but if this is not the case, then the problem lies with the electrical part of the generator.

If the output gauge reads zero and the generator fails to supply any power, you are probably facing damage caused by oxidizing. The voltage regulator is equipped with something called slip rings, which are made of a material that is prone to oxidizing and which can prevent the device from working properly.

If you’re looking for Onan generator repair and service manual check out the books or instructions below:

You can get a manual for Onan Generators from Cummings website. Once you are on the homepage, navigate to Parts & service and click on RV generator manuals. This brings out a page that lists different generators well aligned to their manual guide

You can also go here to find Onan generator parts diagram and manual for many generator models or find Onan generator physical manual on eBay.

Onan Generator DIY repair


The problems we have listed above are some of the most common problems encountered by owners of Onan generators. In some cases, they can easily be fixed. Try following these simple steps to fix the device without taking it to a repair shop.

Since the issues with the display lights might be caused by a tripped circuit breaker, you can try to repair it by switching it “On” again. And if the generator is failing to supply power, you can buy new slip rings and replace the old ones. Apart from this, you can also make sure to clean out any water from the device.

Onan Generator Local Repair Shops Near Me and Certified Repair Service


In case you fail to fix your Onan generator by following the above, you will need to contact either a local repair shop or a certified repair service. You can easily find the shops online by entering your location and browsing through the search results. In case of engine problems and damaged parts, however, it would be best to contact an Onan repair service. In order to find the one that is closest to you, go to the official website of Cummins Power Generation and click on the “Sales & Service Locator” button. » Onan Generator support

Find Onan Generators Repair Shops Near Me

Popular Onan Generator Models


When it comes to popularity, gasoline generators are at the top of the list. The bestselling models are Cummins Onan 2800 Watt Gasoline Generator, Cummins Onan Gasoline EVAP Generator and Cummins Onan LP Vapor Generator.

As you can see, fixing your Onan generator from the comfort of your home doesn’t have to be an impossible or even tiresome task. And if you make sure you don’t do anything reckless and you follow the abovementioned tips, you will be able to repair it in the least inconvenient way possible.

Looking for Onan generator parts? Visit this page and find out where to buy cheap and genuine Onan generator parts.

One comment | Add One

  1. Prince - 08/21/2023 at 12:09 am

    Generator will not start

    I used 24 volts from two batteries accidently to start and now it does not run

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