Leon wrote:
"Tom" wrote in message
...
On Nov 10, 12:42 pm, wrote:
On Tue, 10 Nov 2009 09:28:13 -0800 (PST), Tom
wrote:

Black & Decker miter sale model 7715 type 3.

I bought this saw at a garage sale. the seller cut a board, said it
needs a blade. But, I can't remove the old blade. The armature of
the motor turns when I try to turn the blade nut. If I "jam" the
blade so it can't turn, the armature still turns. How do I lock the
motor to remove the blade?

Are you *absolutely* sure you're turning the arbor nut in the right
direction to loosen it?

Yes! And I did try both clock and counter clock wise.

Always always with out exception you loosen a nut by turning it in
the same dirrection that it spins when running.
Have you checked for an armature lock button?

If it doesn't come off any other way find a service station and tip a
mechanic to take it off with a big impact wrench. There should be enough
friction for the impact to trigger even if the blade is slipping on the
shaft.