Are compressor manuals like socks? Just like the washing machine or the dryer eats one of each pair of socks you own, I suspect that some appliance in the house eats the compressor manual every time you put it down.
And then the compressors get older. They change hands. They end up in garage sales, and bankruptcies and who knows where? And then, the new owner wants a manual. They cannot find it, of course, because sometime in the past the manual-eating appliance ate it!
Where to get compressor manuals, then? FIRST look on the compressor brand specific pages on this site, linked from the site map under Compressor Manufacturers / Compressor Brand Information.
When I have been able to get manuals for that brand of air compressor, or have found a location where you can get one, I have posted that information on the brand information page on this site. Any manuals you find can be downloaded to your computer, no charge.
Next, navigate to the ASK page on this site, and use the form to request help in getting a manual. You should indicate how someone with a manual can reach you, and for sure, include as much info about your compressor as possible such as the brand, model number and horsepower.
Third, have a look at the list below and contact these folks if you need a manual for these air compressors.
If you need a manual for any of these air compressors:
You are invited to email: firstname.lastname@example.org with your request.
Thank you, Mark!