Hi,
Been a while since I had a 141 apart, but I took two apart when I was loaned a rifle before I bought my own. The rifles are owned by brothers, and 1 easily slid apart, the other needed careful leverage to take apart. (use ?, original tolerances? swollen stock? I don't know.)
The screw comes out the side, then the barrel/receiver should lift straight up from the stock. I found on the tight rifle I had to push the stock down with one hand and wiggle the reciever up with the other hand. They do not come apart forward/backward, but barrel up/stock down. (not side to side either) If you get a little movement you will see the "Rails" that the receiver slides off of.
Does this make sense?
Once you do get it apart then you will know. (it is the first time that is confusing.
ALSO
I shot my first deer with a 141, but I made a mistake. Please benefit from my ignorance.
I was told not to lightly cock the weapon, they apparently need a firm work of the action to get cocked. I did fine at the range, then took the rifle apart to clean it, then went deer hunting a week later. In the woods, I forgot that the rifle needed a firm cocking action, ("SLAM" is too harsh a word, firm is the lightest you can go) and quietly eased a round into the gun. several hours later when I saw a deer. I lifted the gun, undid the safety (harder for a leftie like me) squeezed the trigger and...
Nothing, no click, no BANG, no nothing. I tried working the safety on/off again, (Deer left about this time...) and wondered what I had done wrong. Long story short I had never cocked the rifle after I cleaned it.
I have never had a problem with the deer rifle I bought, (but it isn't a 141) just with the borrowed rifle. I (or my daughter) will inherit my FIL 141 later, which is the second rifle.
FWIW
gfrey