If you do not have an owner's manual, take it to a gun smith.
Remove stock from shotgun
Best to ask a gunsmith for help.
Go to the website www.okiegunsmith.com/Stevens_410_shotgun_model_94C.jpg. This is a free download.
how do you disassemble a model 49 ithaca 22 rifle
Which model??
http://www.histandard.info/manuals/sears/pashotguns/index.html
Try e-gunparts.com, internet auction sites, gun shop, gun show, want ads.
Best left to a gunsmith
Watch this video.
Your winchester model 9422 which was made in 1980 will bring between 250-475 dollars depending on the overall condition of your rifle and a good bore.
With the serial number that you provided,your Winchester model 1897 pump action shotgun was made in the year 1925.
The manual can be downloaded here: http://www.histandard.info/manuals/sears/index.html