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Old 11-27-2016, 02:10 PM   #1
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Few questions for ya!

I have a few questions for anyone that has some input. Much appreciated in advance.

First, the engine coolant tank. There are a few levels on there and I wanted to know what they mean. There is a "Fill Hot" and "Fill Cold" lines on the tank. About to be winter and I'm not going to drive it until spring. As of now the coolant is slightly below the "Fill Cold" line. What do those two levels mean and what should I be keeping the coolant at for winter. I can assume what they mean but I would rather ask a dumb question than mess something up. Also, what type of coolant do I use for it and do I just pop off that top to add?

Second, my generator. There is an "Air Pre-Heater" lever which currently is set to summer. What does changing that lever from summer to winter do? Again, I can assume when I want to change the lever when I'm traveling but I would rather just ask first.

Thanks again yall!

I have already winterized by draining all fluids (hot water tank, fresh water tank, grey, black) and added some RV antifreeze down all the drains/sinks/toilet. Tennessee winters usually are not too bad and usually don't stay below freezing for much more than a few hours at night. I will be running the engine and generator about once a week just to keep things moving and will also move the camper a bit to not keep the tires standing still in one place. Anything else I'm missing?
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Old 11-27-2016, 03:15 PM   #2
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Coolant tank hit and cold marks refer to the engine temperature. If engine is cold, the level should be at the cold mark. If hot, hot mark.
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Old 11-27-2016, 03:26 PM   #3
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The Air PreHeater lever when in place will draw intake air for the generator motor past a warm manifold when it is really cold outside. I would consult the owners manual to see what temperature this lever is supposed to be used. Small aeroplanes have a carb heat lever which basically does the same thing and prevent icing around the throttle plate.
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Old 11-27-2016, 03:30 PM   #4
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Like all cars the tank catches overflow from the radiator when it gets hot from use. The main thing is that when the engine is cold the amount of fluid in the tank should be below the fill cold mark. Check your engine manual on how to add coolant fluid and what type.

The warm air lever is used to preheat the air going into the carb in cold climates. Makes things run better.
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Old 11-27-2016, 04:09 PM   #5
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Thank you all!
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Old 11-27-2016, 08:16 PM   #6
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Anything else I'm missing?

Not sure if you have an outside shower and or ice maker. If so,,, don't forget to winterize those items
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Old 11-28-2016, 07:13 AM   #7
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Not sure if you have an outside shower and or ice maker. If so,,, don't forget to winterize those items
I did forget about the outdoor shower! Thanks brotha! We are getting very unseasonably warm right now. Hell, it's getting up to 71 tomorrow! Doesn't get colder than 34 for the next week or so. Thanks for the reminder on outdoor shower.
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Old 11-28-2016, 07:17 AM   #8
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Glad to help!
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Old 11-28-2016, 09:03 PM   #9
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Those older Onan generators also had an altitude lever. It was used to adjust the carburetor for altitude changes. As an example, it went one way for below 4000' and the other for above 4000'. You might check yours to see if it has the altitude lever for future use.
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Old 11-29-2016, 08:53 AM   #10
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Those older Onan generators also had an altitude lever. It was used to adjust the carburetor for altitude changes. As an example, it went one way for below 4000' and the other for above 4000'. You might check yours to see if it has the altitude lever for future use.
I will check that out! Thanks.
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