Try Numrich Gunparts. They have a wide variety of parts and schematics for older firearms.
This should help.
try www.midwestgunworks.com I found the 101 manual here.
Try Numrich Gunparts for a breakdown and parts list.
http://www.castbullet.com/misc/tdown.htm follow the link & it will show you how
You can find a parts breakdown and disassembly guide for the Winchester Model 90 by checking online resources such as the NRA's Gun Collector's Association, or firearms forums dedicated to vintage rifles. Additionally, websites like Numrich Gun Parts offer schematics and parts lists that can be helpful. For detailed cleaning and maintenance instructions, consider looking for a service manual or video tutorial specific to the Model 90.
Winchester, Its a very old Rifle, but the 53 was what turned into the model 70, Hince Winchester Model 53 and some pre64 model 70 parts should fit.
Numrich gun parts
The sears model 6c-22 was made Winchester/ same as Winchester model#490
The Gun Digest Book Firearms Assembly and Disassembly Part 5 Shotguns has an illustrated description of the model 97 disassembly.
E-gunparts.com click on Winchester then 74 at the top you can buy it for about $1.50
Made from 1964 to 1981, no further sn breakdown I can find.
Try an appliance parts website. Usually they have schematics and a breakdown of parts for appliances.