Question about Stanley Bostitch N80s Nailer -rebuild Parts O`ring & Seal Kit

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N-80 vintage 1986 the striker does not return far enough to engage the next nail. If I turn the gun upside down and tap lightly on the head it will usually allow the striker to retract.There are no air leaks

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You have lost compression on your piston o ring, instead of air pushing the piston back for the next nail its going around the piston , and the proof is that your piston will move with a simple tap. please replace all orings, because if one is worn the others arent far behind, if you dont replace all , at least replace the piston one and all the cylinder ones,,o rings kit are available at your nearest nail store or try toolpartsdirect.com plz rate this answer,,tks

Posted on Dec 11, 2009

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