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Senco 600 framing nailer / double hitting(nailing)

Lately my nail gun is double nailing(usually at the most inopportune time). what is causing this and how can i fix this?

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  • smokinbob Apr 23, 2009

    I don't think I described my symptom's correctly. What is happening is that the nail gun will cycle two times with one pull of the trigger. I do not experience two nails with one "hit". I can literally feel two quick rapid fire cycles with one pull of the trigger and have two nails as a result. The nailer is Senco framing pro.

  • smokinbob May 11, 2009

    thank you, I did more searching and I read that this is a major cause of double nailing.

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Double nailing is usually caused when you apply to much pressure on gun causing it to fire on the recoil lighten up just tap it on the surface to be nailed

Posted on May 11, 2009

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The 600 had a design flaw, as it was designed for the "happy homeowner" to use

In the nose, where the nails hit before the driver hits, the part wears down prematurely

there is no solution to the problem

Senco let us trade our guns for the 701xp model for a discounted price

Posted on Jul 03, 2009

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This problem most often occurs, when the wrong nails are used. Check closely to see if the nails are correct, sometimes generic brands can be made slightly different, this can cause trouble.

Also you can check to see that the nose piece is not worn where the nail slides down. If it is worn the slot may be enlarged enough to allow more than one nail to be within range of the driver as is comes down.

Look carefully, you may see signs of the unusual.

Posted on Apr 23, 2009

  • Roeh Apr 23, 2009

    Okay, This may occur when the trigger is still depressing the button after you release. Check to see if the trigger has any unusual symptoms. Does the lever on the back of the trigger move freely? Is it bent?

    Or the Trigger assembly is worn. You may try to check the O-rings on the trigger assy. This is the long pin with a spring surrounding it. Try replacing the o-rings. Or it is possible that there is dirt keeping the trigger pin from moving up and down properly.

    Hope That this answer is better


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