See the link below. This should help you.
http://www.crosman.com/cs/manuals/crosman-rifles
find your model.. You will have access to both the Owners manual and the Parts diagram.
The Crosman Recruit is a pellet rifle not a pellet gun. If you want to see how the rifle is assembled then see the link below for the diagram.
The Crosman model 150 was made between 1954-1967. It is a .22 cal pellet pistol.
If you are talking about a Crosman 1400 you can find a diagram on Crosmans web page. www.crosman.com look in the manual section.
The Crosman 1088 Pellet/BB is rated at 400-430 FPS
Crosman offers a service to locate a repair center for their older guns and rifles. Click on the link below and then at the bottom of the page click on "Find a service center" it will direct you to someone who can rebuild your Crosman pellet gun.
It would help if you stated the model number. Crosman made several pellet rifles for Sears. You need to provide more information.
See the link below for the parts list and phone number for Crosman.
Daisy, Crosman, Remington and Beeman
100 USD
See the link below for the Owners Manual for the Crosman 1077 air rifle
See the link below for the parts diagram. Crossman offers a service to locate shops the repair older Crosmans. see the link below
It's a Crosman 764sb air rifle.