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How often should I start my backup diesel generator?

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We advise the user regularly to check the diesel generator’s conditions to ensure it is always kept in good status and ready for use anytime. This is very important.

Start the generator set once every week and run 10 to 20 minutes at full load. This is in order to clean the carbon deposition in the engine and check other electrical components, such as wiring, controller, battery, coolant, oil, etc.

Also, don’t forget to check the coolant/fuel/oil before every time use. If a single part of the generator set lets you down, you might not have any backup power when in an emergency.

Ke Wong

Ke Wong

Hey, I’m Ke Wong joined WALT POWER in 2011. I spent a dozen years focused on generator set & load bank technology and solutions for the power & energy industry. WALT Power is a reliable & leading manufacturer & supplier in China, as a business director, I am so proud of our knowledge is more and more popular not only for engineers, and generator distributors but also for end-users. Hope you are enjoying our article, if any questions or comments welcome to send me sales at

Ke Wong

Hi, I’m the author of this post, and also the business director of WALT Power. I have been in this field for more than 17 years. If you want to know more about the generator set or services, please just feel free to contact me any time.

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