Gordon,
I am confused. The model 1906 is a pump action but does not have the tear drop loading port in the stock. That feature is a trademark of the Model 63 rimfire. But that rifle is an automatic chambered for .22 L Rifle cartridges. That is a fine Model 63 below.
You might try this link for the spring which you need.
http://homesteadfirearms.com/parts/shopcart/
commerce.cgi?product=Winchester_63&
cart_id=1257299428.2742
I have used Gary Lucario for my modern gun smith needs. He is just north of downtown a bit east of 45. Kind of a shadey neighborhood but a great guy. He was ill last I talked to him about 2 years ago.
Get some new friends who aren't going to hurt themselves or you with your guns.
Hope this helps
2bit