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Gusaroo 09-17-2008 08:54 PM

Bostitch floor Nailer M3 MIII problems
I just picked up a used nailgun, and it doesn't always shoot a staple every time I hit it. Is there a known issue with these guns as they get older?

Is there a rebuild kit commonly used for it? I have been using a framing hammer to shoot it, is it that too much hammer for it?

As you can tell, this is my first (and last) time doing hard wood floors. Its for my own house, so no real rush, no big deal...

mike costello 09-18-2008 05:53 AM

Oh yeah, you messed it up with the framing nailer for sure. Your gonna need new innards now

AtlanticWBConst. 09-18-2008 06:09 AM

Ouch....No, never use a framing hammer to fire it. You should only use the mallet that is made for it.

You propably did some damage to the insides, as stated. Better bring it to get serviced.

Gusaroo 09-18-2008 08:14 AM

I only did about a bundle or two with the framing hammer.

Gusaroo 09-18-2008 12:06 PM

Stopped at my local Authorized Bostitch dealer to pick up a rebuild kit for my gun and the correct mallet.

Lo and behold, they told me that, in a pinch, I could use a "framing hammer" with no harm!

Bought the mallet anyway, will swap out the o-rings etc and see how she does.


26yrsinflooring 09-19-2008 05:08 PM

You can use whatever kind of hammer that gets the job done it just pains me to see a steel head hit the button.
Confirm your staple gauge is correct and confirm your spring is set right.

I had a guy nailing for me and it was missfiring every other nail the problem was not the innards it was the spring.

I only use Cleats now no more staples staples are for....... guys without cleats!

AtlanticWBConst. 09-19-2008 05:54 PM

I'd still never use a framing hammer on my floor nailers, they will damage the plunger head (Knick, chip, dent) or worse...
....Had a worker using a framing hammer on one of our pneumatic bostitches for just a little bit, and the plunger head was pretty smashed up.

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