Might help if you gave a model number - if it's a Crosman, (see the link below) and download an exploded assembly for the model number. Most are available there.
Look up on the Web under "Air Gun Repair" and find a shop closest to you.
How to pronounce Zendaya is by sounding it out like zen then daya then put it all together how to pronounce Jenea is like je then nea then put that together last but not least coleman cole then man then put that together.
Contact an Air Gun repair shop near you. Look on the Web under "Airgun repair or Air Gun Repair" and send it to a location close to you. It very hard to help you if you don't state the name, model and make of the BB gun you took apart.
You open up the gun, take out the bolt and soak it in hot water. The glue around the bolt will weaken and the bolt will split into 2 pieces and the air restrictor will fall out. The you simply glue the bolt back together with hobby glue and put it back in the gun and put it back together.
with a hand pump
It depends on which gun. Different guns assemble in different ways.
See the link below for all of Crosmans Owners and parts manuals.
No it should not. Are you sure the air gun is a .22 caliber not a .25 caliber. Air you loading it right? Are you loading it through the breech? You are using an air gun not a real gun.
Contact Daisy customer service and fill out the form for a diagram. See the link below
Best left to a professional.
Gun shop or gunsmith
Explain you definition of a "BIN"