At last! You video finally answered my question (I've been looking for an hour). I got the HF aie hammer for $15.00, along with 1 chisel). I tightened the spring down all the way, but the chisel still moved about 1/2 an in. Since I am new to air tools,Ididn't know iif that was ok. I realiize the bit moves in and out, but didn't know if that was internal or not. I saw yours move that 1/2 in. None of the other videos or instructions mention that. Thank you
I use my air hammer all the time. I've also bought tools only to find the old one after. I love Jetski's! I keep looking a decent deal on a couple of used ones but people want a fortune unless they're junk.