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Old 06-23-2016, 02:32 AM   #1
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How long should you run your " Gas Generator at one time ?

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Old 06-23-2016, 04:33 AM   #2
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Exercising Your Generator (page 10)
It may seem surprising that “not” using a machine could cause performance
problems, but with RV generators that’s exactly the case. Regular “exercise” is
an important part of keeping your generator healthy. Lack of exercise can cause
moisture build-up and fuel system degradation that make it run poorly. In fact,
in as little as 30 days, the fuel in gasoline-powered generators can begin to gum
and varnish the fuel system. Fuel varnishing results in hard starting and surging. (A
surging generator never settles at a stable operating speed.)
To prevent such problems, it is recommended to run gasoline generators at a
minimum of 50 percent capacity (2000-watts, or one air conditioner for a 4000-watt
set) for two hours once every four weeks. This is necessary to help keep moving
parts lubricated, expel moisture and control fuel varnishing in the carburetor. A long
two-hour exercise period is preferable to several short periods. While traveling, this
can be accomplished by running the air conditioning. If you own a diesel generator,
regular exercising can help reduce internal condensation and helps keep seals

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Old 06-23-2016, 04:40 AM   #3
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The above is what I did on my last two THs with Onan units. Never had an issue in over 10 years...
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Old 06-23-2016, 04:41 AM   #4
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I've ready that excercising the generator is a good idea. I'll just add that mine is running great with only about 200 hours on it in 7 years. I just run it when I need to (microwave, battery charge or a brief a/c when dry camping) or when I want to test it after the winter for the most part.
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Old 06-23-2016, 08:36 AM   #5
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Years ago when we purchased our Class C, we were told to run the generator often. The MTBF ( mean time between failure) for these units is about 3,500 hours. So, don't be afraid to use it. And yes, it is very important to exercise it frequently. You might consider running it while driving, using the A/C so it has an electrical load.

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Old 06-23-2016, 08:41 AM   #6
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I ran the generator on my class A a min of once a month for at least 30 at about 75% load there were times when I was in the desert I ran it 24 hours a day for a week. They seem to do best when run IMHO
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Old 06-23-2016, 10:26 AM   #7
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Not quite the same, but I have a 16kw standby generator at home that has a self-exercising function that runs it once a week for 15 minutes at half speed. The objective is to get the oil warm enough to evaporate out any condensation and also cycle a bit of fuel through the fuel pump and carb/injectors (not an issue on a propane/NG unit).
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Old 06-24-2016, 09:15 PM   #8
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All the reasons listed for running your generator apply to ANY internal combustion engine,not just generators, if you prep a engine properly for long term storage and prepare it for restart, you don't need to start it while in storage. On the other hand if you don't store it correctly , fire that puppy up once in a while
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Old 06-24-2016, 09:23 PM   #9
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Generators are designed for continuous duty. I excerise mine regularly and run it for ever how long I need.

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Old 06-24-2016, 09:26 PM   #10
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100% agree on letting it run for as long as you need it.

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