Crosman is one of the better companies for making old manuals accessible for free.
http://www.crosman.com/pdf/manuals/crosman/167/C167-OM.pdf
Another airgun blog is excellent for pictures. Search there for some 167 stuff. Lots of neat stuff, I can spend hours on that blog.
http://anotherairgunblog.########.ca/2008/09/valve-stem-seal-for-crosman-167-part-1.html