Bostich narrow crown air stapler won't work

How to Unjam a Bostitch Stapler

1. Disconnect the construction stapler from the air supply. Use a hammer and punch to do this. ...
2. Push the driver upwards and past the jammed staple. Do this by putting the punch at the tip of the driver, which you should see coming out of the nose. ...
3. Tap the hammer against the punch and the jam should clear.

https://homeguides.sfgate.com/how-to-unjam-a-bostitch-stapler-13401638.html

Stanley Bostitch has been sold to Dewalt. The link below has all the information and parts for your gun. Good luck with your projects.

http://servicenet.dewalt.com/

YES YOU DO HAVE TO PUSH IT TO THE WORK FOR IT TO SHOOT WENT WILL IT DO IF ANY THING

you have an air leak and you have to fix your stapler nailer hope its not cracked but just a seal

look on the front of the tool.there is a dial right where the plastic meets the yellow housing.also look closely and you should see a diagram on the plastic telling you whitch way to go.

The terminals on the battery or on the stapler must be damaged (bent or corroded). It's probably the stapler if the battery charges fine. Does it do the same thing with another battery, or just one? Assuming it's the stapler, and you don't want to mess around with the terminals you could tape a spacer on the stapler to keep the battery 1/4 inch out. You would probably have to tape the battery in place though. If the problem is corroded terminals, I have found that a little wire brush attachment in a Dremel works great. Not a brush like a disc, but a brush that looks like the kind used for paint stenciling.

Shoots staples fine but brads jam or bend. Check that the part called "guide bar", #35 on the parts diagram isn't getting stuck in the channel of part #30.

The guide bar retracts into the channel when driving a staple and springs out of the channel to guide brads.

The guide bar can get stuck in the channel if it's bent or gummed up. (Bent is likely the result of driving a brad into an obstruction.)

The business end should look like this:

check the crown size. some are 9/16 others are 1/2

Make sure you actually removed the entire broken staple and there's not a piece still wedged up in there somehow.
Try raising the air pressure up to 125 psi and plug it in and unplug it a few times. Sometimes the piston can get jammed, and a smack with the palm of your hand on the side of the cylinder will jar it loose. If that doesn't work, try pulling the trigger as you jam the nose of the gun against a soft piece of 2x4 or something, repeatedly firing and jarring the tool. If this doesn't do it, you may have to open it up to clear the jam and put it back together.

If the gun has never been opened, the problem could be a lack of oil or worse, too much of the wrong kind of oil. No oil causes parts to stick. Too much of the wrong kind of oil caused the orings to swell and jamb parts. Carefully open gun to preserve head gasket and check for piston travel all the way down to the bumper. Piston should not be too tight, nor drop to the bottom under its own weight. The driver has a groove on one side that should align with the grove in the nose and it should not be bent. Next check the head valve by pushing the valve into the head with your thumbs. the valve should travel about 3/8 inch. If stuck apply air pressure to hole where gasket sits on head. The valve will pop out. Clean and lube parts replace orings or upper bumper if cracked. Assemble and test. Parts are not expensive at www.toolpartsdirect.com, enjoy