With Sears compressor manuals, there are few specific model manuals but rather a general guide for all of the similar compressors given when bought new. I see a maual for sale: Sears Craftsman Instruction Manual Oil Lubricated Single Stage | Etsy
The pumps are made by DeVilbiss and you can get more information on pump parts searching for "devilbiss" parts. the tank and accesories can be searched by the electrical motor brand, general compressor switch, etc. Sears did not have anything to do with the manufacture of the compressors they sold but simply labeled other manufactures like Devilbiss, Sanborne, etc. You might have to bend your own handle, good luck with your search.
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