I just received an email from Forest River that they have updated their website.
One of the new parts is the interactive Manual section which has a lot of information on how things should work. In the past they had nothing so this is some improvement.
Here is a link to the main page and you need to select Forest River RVs and select the help category you may want to read about.
Here is the link
Forest River Interactive Manuals
I think you find the reading worthwhile.
Here is how the Gas Motorhome section looks like.