See the link below. This is for the 2100 not the 2100B or 2100W.
CROSMAN 2100 You can find CROSMAN Parts and manuals at ( see the link below) This should give you a diagram on how to dissamble a crosman 2100.
see the link below
Look on the right side just below the words Crosman Classic.
Crosman still has parts available for this model. See the links below for the parts manual and Crosman customer service.
See the link below you will find all the Crosman rifles manuals there.
See the link below for the parts manual.
Best to take it to a authorized repair center
See the attacked link from Crosman for the parts diagram. See the Link Below.
Crosman has the information online. See the link below
See the link below for the owners manual.
See the link below for the Owners Manual.
Crosman still had parts available for this rifle. They also have, on their web page, a link to all their parts and manuals. try http://www.crosman.com/airguns/service/manuals