How to change flint in kaschie bullet lighter

If this is a Gas jet torch lighter it probably doesn't have one. It uses an 'electronic' ignition which doesn't need a flint. These "piezoelectric' lighters can last for 10 or more years with no problems.
If it is working correctly you should hear a 'click' when you press the button. Gas 'torch' lighters tend to run out of gas more often as the flame burns more fuel at a faster rate to produce the 'Jet' flame. If it isn't lighting properly try refilling it first. These are generally considered a 'cheap' lighter so if refilling doesn't help you could just buy a new one.

"easy-to-use piezo electric ignition"

No flint.

It uses compression of a crystaline material (the click) to generate a spark. Could be dirt has fouled the striker or poor electrical connection between the piezo crystal and the spark gap.

THEN THROW IT AWAY AND GET A NEW LIGHTER

This was the only info I could find about changing the Flint on the Solo.
It's aPiezo igniter they're most easily retrieved from barbeque lighters just open it up and it's right behind the trigger. If it's under warranty send it back otherwise give this a shot.

You've posted this in the car and truck section. I'll try and help.
Is this a higher quality refillable lighter? If it isn't refillable i wouldn't waste time replacing the flint. Just buy a new lighter. Are you sure it has a flint as some lighters have electronic sparks.
Try gently pulling the roller straight up. Some makers fit the flint as a pull out so you can replace the flint from below the roller.
If you really need to change the flint you will have to lever out the roller. NOTE, the flint will be spring loaded so might pop out as you remove the roller.

Hey Vicki, Did you remove all pieces of the old flint?? it needs to be clean.. The spark wheel must make good contact..(could the spark wheel be worn out??)..Some spark wheels have the carbide only on the edges as rings that do the sparking.. some very high end lighters have a solid carbide wheel..$$... make sure the sparking wheel is making good contact..(you may have to stretch the spring that pushes up on the flint..just a little... good luck..

Replace flint.

How high is the wick? It can be adjusted by pulling from either direction. Try soaking the cotton til you can see the fluid fill the compartment, or til it drips out the wick. Be sure the fluid has evaporated and the lighter is dry, before you try to re-light it.

INCORRECT PRODUCT CATEGORY

I'm sorry but I believe you have this posted in the wrong product category? Please re-post the question in the proper category if this is the case, otherwise you have my apologies. This is the car and truck problem category