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I have a Fasco pneumatic framing nail gun. My problem is when I fire a nail the drive pin will not retract back into the cylinder. How can I fix this?

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Posted on Jan 02, 2017

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SOURCE: Senco SN4 misfiring intermittently

This is a discontinued tool by Senco but there are still parts available for it. It sound to me that the o rings and possibly the firing valve need to be replaced. I would recommend going to and you will find a complete parts diagram in their discontinued tool section. They also have a toll free number if needed and you can talk to their air pro. I have rebuilt quite a few of these and they are not that hard just make sure to clean all the parts and use lube when replacing O rings.

Posted on Jan 01, 2009

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SOURCE: Firing pin not retracting far enough to allow nails forward

Yes,this is a common "mis fire" by Pasilode. I own the 16p Framer and the Angle nailer and I never get it from the Framer but I do get it seldom from Trim Gun,nothing you can do ,its just a misfire.

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Posted on Apr 09, 2009

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SOURCE: The Senco SFN-1 gun will drive one nail and then not retract

sounds like time for a rebuild i do this once a year on all of my guns i buy a seal kit and replace them at that time and oil the interior oparts and check for worn or broken parts

Posted on Sep 03, 2009

  • 313 Answers

SOURCE: nailgun firing pin not connecting with nail

  • you need to make sure the guns is clean and oiled
  • make sure you are using the right kind of nails
  • some perfer the ones connected my wire and some the ones connected my paper.
Not knowing what kind of gun you have that is the best I can do..

Posted on Sep 08, 2009

  • 1 Answer

SOURCE: When I fire my im250 the firing pin often does not retract

Using a wire "toothbrush" size brush, clean the track in front of the gun where the pin slides - where the nail groove is. **** particles from the nails and the plating from the nails sluffs off fouling the path and causes the pin to stick. After several cleanings of my gun, I noticed that this brushing of the track the firing pin follows keeps it operating for several days without the problem recurring!

Posted on Sep 14, 2009

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