A Sears Mod 53 is a Winchester Mod 70. If Sears doesn't have an owner's manual for the 53 (and you can't find one on eBay), go here http://www.stevespages.com/page7b.htm for a Winchester manual.
Photocopies can be found on ebay.
Try the WeedEater website (use Google to find it). I found a down-loadable manual for my line trimmer and my leaf blower.
Contact Winchester Customer Service through their website.
If you don't have a manual, find a gunsmith and ask for help.
Possibly in your appliance parts store, or online.
Should be the same as Winchester 1400 shotgun. Email me for a copy of the manual.
Follow the instructions in the owner's manual. If you don't have one, find a gunsmith.
FIE was an importer of German and Italian firearms, among others.
To install Forge Mod Loader you install it like a normal mod, either manually of with an installer (I recommend MCPatcher) You can find manual installation instructions all over the internet
Contact the company Marlinfirearms.com for a free manual . It can be downloaded
where can i find a schematic for Stevens mod. 311A