THIS IS A CROSMAN. It is a Crosman model 140 or 1400
website for gunpartscorp, letter S, Savage, Model 73, and there is a parts diagram.
See the link below for the parts diagram.
try egunparts
There are 4 different versions of the Benjamin 397. See the attached link. You can download the owners manual and the parts manual for your rifle. It will show you how it is assembled.
See related links I put a pointer to e-gunparts.com for the model 16, the have many schematics there as well as the parts page online.
The first Benjamin model was the "St Louis model" made in 1899.
Your best bet is to contact Daisy directly and request a parts diagram if they have one.
See the attacked link from Crosman for the parts diagram. See the Link Below.
I would contact Daisy directly at the link below and ask them.
Crosman still has the parts manual for all it's rifles. On the home page click on "Download a Manual." Crosman owns Benjamin. see the link below
Sounds like a model 14 or 14 1/2 should be able to get a parts diagram from e-gunparts.com if you can't just find it on the web searching.