SOURCE: Fires 2 & 3 nails every so often.
Most all nail guns can be converted to single fire, however, usually parts must be changed. Some brands have two positions on the trigger, others have a button position near the trigger to accomplish same. Check with dealer or email your gun model # and I will explain your to fix. For now you can replace the spring on the safety with one slightly stiffer. Also try nailing with trigger depressed and quickly bump the gun to fire, this method usually works better than placing the gun in position then firing. Good luck with your repair.
SOURCE: nail gun is miss fireing
remove all the nails and remove the air hose. BUMP the tool on something and does the driver come down on its own if so it needs new o rings. also take a look at the feed pawl for a broken spring that would prevent it from feeding nails and lastly look at the coil of nails to make sure they pull freely. Let me know if you need more assistance.
SOURCE: hitachi nail gun,piston/nail push rod
You have one or more worn o-rings in the head of the gun. They direct the air to the proper parts of the gun to first drive the nail then to return the driver to the top of the gun for the next nail. Depending on the manufacturer and your model number, some companies make kits to replace the o-rings (always replace all of them). For some companies you have to get a breakdown of the gun and order each o-ring seperately.
SOURCE: my hitachi nail gun NR90gc2 will not fire
Check the date of the bottom of the gas. With the gas removed when you fire it you should hear a faint spark sound from the top. If gas is in date try putting it in your pocket for 10 minutes to warm it up. Open the front and make sure the piston is pushed all the way up into the machine.
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