The magazine on a framing nailer is not that complex. The spring on
most magazines is just a flat coil which rewinds to put compression on
the nail sticks. I cannot imagine how to jam up the magazine.
Now, if it's the nose of the nailer, where the driver blade pushes the
nail off the end of the magazine that got jammed up, that I could
easily believe. The nose is bolted to the end of the air cylinder. The
magazine is just sheet metal and holds up to 2 sticks of nails before
they are fed to the nose and driven by the driver blade.
If he put clipped-head nails into the round-head nailer, that would do
it, allowing 2 nails to jam into the nose piece. The safety surrounds
the nose and is held extended (preventing a fastener from being
driven) until pressure against the workpiece allow the nailer to
cycle.
These units are fairly durable. Get the guy to have your unit
repaired. Write down the serial number on it before you get him to
have it repaired at his expense.

On Sun, 17 May 2009 19:19:02 -0500, "mm" wrote:

I lent my FR350 to a friend who proceeded to jam it up, and then 'repair'
it. The gun was not old at all, and worked well untill then. He took the
magazine apart and wasn't able to reassemble it. Even with the exploded view
from the website, I wasn't able to reassemble it either. There may be a
missing spring also. I took it to my not so local DeWalt/P-C/Delta repair
center (along with a compressor as mentioned in a previous post), where they
quoted me a price of 'at least' $129 to fix. Does anyone know of a repair
shop around Chicago or its suburbs who repairs air nailers? Google doesn't
come up with much at all. I hate to just toss it out, but it doesn't make
sense to spend that kind of money to rerassemble it. Thanks, Mark