Electric brake shorts out the motor winding and it generates
current in the winding in reverse - generating voltage - and sparks
if the brushes are not smooth on. The short isn't hard, but soft
through a low resistance value.

Good find.
Martin

Leon wrote:
"Puckdropper" puckdropper(at)yahoo(dot)com wrote in message
...
When using my Kobalt CMS, I notice a large spark from the motor
compartment
when I turn off the saw. Sometimes it looks like it fills the whole
compartment. Is this a sign the brushes need replaced?

Puckdropper
--
"The potential difference between the top and bottom of a tree is the
reason why all trees have to be grounded..." -- Bored Borg on
rec.woodworking

To email me directly, send a message to puckdropper (at) fastmail.fm


Sounds like a normal condition when an electronic brake in engaged.