Gun shop, gun show, pawn shop, garage sale, estate sale, want ad, for sale ad, on line auction.
Contact Winchester Customer Service through their website.
Gas tube. See the link below for the owner's manual for the rifle.
You will have to call Taurus to find out.
Where can you locate a parts breakdown and availability for a Sears mod. 42-103-2840-22 caliber rifle?
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.
Benjamin ( who is owned by Crosman air gun) recommends 10 pumps. Over pumping may damage the rifle. You can still get the owners manual for this rifle for free. Go to the Crosman link below and click on "Download a manual" at the bottom of the web page, then click on Benjamin and locate your rifle.
This model was made for Sears by Crosman. It is a Crosman model 160. For the owners manual see the link below.
Try e-gunparts.com
Try e-gunparts.com
Try the WeedEater website (use Google to find it). I found a down-loadable manual for my line trimmer and my leaf blower.
Once you cross reference mod 42dl (Sears mod 103.19800) you will find your rifle is really the Marlin arms Mod 80. Parts are available from Numrich Arms at http://www.e-gunparts.com . Your parts and a schematic will show up under the Marlin 80. Good Luck Joe