Question about Nailers
My Senco SN4 intermittently fails to drive a nail. I have checked and cleaned the gun, changed nail sticks, changed nail size, checked magazine spring tension, oiled the air barrel ... everything looks fine, except the firing pin is not be returning, after firing, sometimes ... ?
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 Senco.com 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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Posted on Jan 02, 2017
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