Hitachi NR83A2 nailer pushes next nail down

If your Senco coil nailer is shooting one nail followed by double nails, it could be due to several reasons:

1. Jammed Nail: The first nail may have gotten stuck or jammed in the coil, and when the driver blade pushes down, it forces two nails to come out. You can try removing the jammed nail and reloading the coil.
2. Depth Adjustment: The depth adjustment on your nailer may be set too deep, causing the driver blade to push down too far and shoot two nails instead of one. Try adjusting the depth control to a shallower setting.
3. Worn Parts: The driver blade or nose piece may be worn out, causing it to push down unevenly and shoot double nails. In this case, you may need to replace these parts.
4. Air Pressure: The air pressure on your compressor may be too high, causing the nailer to shoot double nails. Check the air pressure gauge and adjust it accordingly.

If you are unsure about how to troubleshoot or fix the issue, it's always best to consult the user manual or contact the manufacturer for assistance.

If the nail will not advance, easy test will determine problem. Open door and remove the nails. Lightly tap the nose of the gun against coiled rubber hose or soft wood with door open. If the driver falls to bottom, the piston oring needs to be replaced. The driver should stay at top of cylinder. Next pull back the feeder to rear position and check for tension. The feeder should spring back towards you when you push. Finally, the check paws on the door should return to extended positon when you push on them. Replace springs as needed. Connect air to gun and rapidly bump fire the gun against rubber. The feeder should move back and forward just as quickly as the driver moves. Good luck

Try oiling the tool first. Remove the nails, squirt a decent amount of air tool oil in the stem where the air hose coupler connects, and fire the tool a dozen times or so. Then put in the nails and test. If it still hangs up then it will need the o-rings replaced.

it could be you are using the wrong nails, the gun should describe the correct angle and size.

I have a older Hitachi 3 1/2 full roundhead nailer and on my there is a button on the front below the head at the end of the nails that you push sideways and hold and slide the nail gun tip up or down. There should be grooves across the front of the tip.

There is a small piston on the side of the magazine that pushes the feeding claw which pushes the next nail into place. Either the feeding claw or piston is stuck or the piston is worn out and needs to be replaced.

You must have broken tip or out of adjustment. Easy to check. Remove nails, and push safety against scrap air hose or rubber to absorb blow and squeeze trigger. Piston will stay in the down position until your release safety (on some models you will need to pull back on feeder sligtly). While piston is down examine the end of the driver for nice squared off tip protruding about 1/4 inch beyond nose. If no tip or looks broken, replace driver. If tip looks complete, adjust for more depth. Good luck

Hi,
It goes thru the same hole as the magazine bolt on the nose. Sounds like yours is broken.

There is a spring that is broken or the joint just needs some lubricant that can help take care of this issue

This happens to my gun too. You probably need to oil the gun once in a while. Here is how you fix it:
Disconnect the gun from the compressor first don't wanna get hurt or anything like that. There is a pin that shoots the nail out well that pin is jammed so what you have to do is push that pin to the original position. using a flat head screwdriver would help you to push that pin back into place. Let me know how that turns out please. I pretty sure that is the problem with your gun. Make sure you lubricate the Nailer once in a while.