Question about Senco Fastening Systems 760102N Pro 25 Xp Brad Air Nailer

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Senco framing pro

After long time without using it, i started to use it again, was working very well, but when i put oil, started to lick oil in the back, anybody know how to fix this problem?

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  • washingtonma Jan 04, 2009

    *"started to leak AIR in the back" of the vent (-sorry (two typos) before i put the oil in, it did not leak air. now it's loosing pressure very slowly.

    [i put a little more than six drops in; but not a ton more]

  • washingtonma Jan 06, 2009

    the model is (Frame pro 702xp)

  • washingtonma Jan 07, 2009

    the model is frame pro 702xp, serial number 04cd2490.

  • washingtonma Jan 08, 2009

    what lubricant should i use before reassembly?

  • David Ford
    David Ford May 11, 2010

    "started to lick oil in the back" I am uncertain exactly what you mean. One question I would ask first is how much oil did you put in it. It only requires about 6 drops before using and about the same if you shut down for lunch. And more and the oil would try and escape from vents. Let me know and I will try and help.


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There are two things to check when this tool is leaking out the cap.
1. Take the cap off of the tool. Look in the cap. There is one bolt holding the "firing valve" on to the inside of the cap. The blot is tightened against a white round piece that is holding in a larger black donut shaped piece. The black piece has two yellow o-rings and a cream seal on it's outside and it has two thin black o-rings on the inside. It will be the black o-ring that is visible that rides against the white round piece. It's part number is LB0038.

2. There is a large black rubber seal that seals the cylinder to the main body of the tool and it will be cracked on around the outside. You will need to look around the outside of this seal and gently pull the upper and lower parts apart to inspect it. The crack is sometimes hidden because it is where the seal is molded at a right angle. This seal is part number BC0342.

Posted on Feb 26, 2009

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Please provide the model number for this tool and I can direct you to a site that sells o ring kits for it. They are not hard to install and have excellent directions. It sounds to me that one of the O rings has a split in it or is rounded off allowing this leak. It would be to your benefit to replace them all. Maybe about 1/2 hour to replace them. Let me know

Posted on Jan 05, 2009

  • David Ford
    David Ford Jan 07, 2009

    K took me awhile but what you need is the upper O ring kit for this tool. It comes complete with all the Orings to seal the leak and DETAILED instructions. The kit number I found is YK0243 and it costs around 28.00. To find a Senco dealer near you go to and under the find a dealer section click on it and you can buy this kit online. It is not that hard to install. Just remember to lubricate the Orings before reassembly. About 1/2 hr maybe a little more but this should cure the problem.

  • David Ford
    David Ford Jan 08, 2009

    generally it comes with the kit if you are buying it. If not a lightweight grease will work. It does not require much just enough to lube the o rings so they don't pinch or roll upon reassembly. Wherever you get this from ask them for a small vial of lube.


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