It was made between 1934-1946. 100,030 made. No serial numbers. Your best bet is to find a copy of The Gun Digest Book of Firearms Assembly/Disassembly: Rimfire Rifles by J.B.Wood
Try this site: http://www.gunnersden.com/index.htm.winchester.html They have manuals for the Model 62 slide action rifles. Good luck.
A Westernfield M72 (actually a M72C) is a Mossberg Model 472. You might try http://www.krausebooks.com/category/firearms_knives for disassembly instructions for the Mossberg 472 in the Gun Digest Sporting Rifle Assembly/Disassembly book.
There's a plastic pin above the trigger; push this through (I used a chopstick) and you'll be able to pull the entire action out of the rifle. There's three basic parts, the lever/trigger assembly, the slide, and a shuttle that rests on top of the slide; the pin on the shuttle goes in a slot that's connected to the lever.
savage model 25 pump action 22 long rifle
Numrich Arms has a schematic of it.
Go to http://www.krausebooks.com/category/firearms_knives and purchase the Gun Digest Assembly/Disassembly book for shotguns. The Flight King is in there.
It is a pump action.
Replacement parts are available through Marlinfirearms.com or: Numerich gunpartscorp.com Jack First jackfirstgun.com Bob's Gun Shop gun-parts.com Instructions on how to install the spring are available in the Gun Digest Assembly/Disassembly volume IV for Sproting Rifles, available at: http://www.krausebooks.com/category/firearms_knives
your winchester model 1200 shotgun has a pump action.
The Winchester model 1200 shotgun is a pump action shotgun.
When all else fails, read the directions. Contact Winchester Repeating Arms through their website, download the owner's manual. Lever action rifles typically do not require disassembly for routine cleaning. Clean the bore when it needs it (not often) and wipe down the exterior with a lightly oiled cloth.
Open bolt, move it to the rear of the action. Hold the trigger to the rear and remove the bolt. Remove the large takedown screw in front of the trigger guard and separate the barrelled action from the stock. That's as far as it should be routinely disassembled.