[Recip Saw Sparking]

Thanks to all for your replies. I suspected the same thing but unfortunately I cannot figure out how to get the tool apart further than disassembling the handle, which does not get me to the commutator. I can however see the brushes making contact with the commutator and the sparks flying while it turns. The copper on the commutator is all black but not pitted. Also, there was 2 small pieces of metal rattling around inside that I was able to pull out with needle nose pliers. I thought it had something to do with the sparking but it appears it did not.

 

As you can see in the photo, no screw heads exposed.

[Recip Saw Sparking]

This is not normal sparking. I have used a Sawzall hundreds of times. in fact I own 5 or 6, but this ones my favorite. To answer your question, it sparks (a lot) the whole time it's "on". 

[Recip Saw Sparking]

Hi, I have a Craftsman 12 A recip saw that is sparking out the back air vents. I checked the brushes and there is still about 3/4" of carbon left so that doesn't appear to be the culprit. Can somebody suggest what could be the problem.

 

Thanks in advance.

[New to this forum]

Hi, I'm a General Contractor from Santa Barbara Ca. Looking forward to being part of this forum. Thanks in advance for all your expertise advice.