Is it normal for a sawzall motor to spark? - Woodworking Talk - Woodworkers Forum
 
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post #1 of 4 Old 11-29-2014, 02:29 PM Thread Starter
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Question Is it normal for a sawzall motor to spark?

I purchased a brand new Milwaukee Super Sawzall yesterday. I plugged it in to see if it worked and noticed it makes lots of sparks in the motor housing (I can see sparks between the vents) while the trigger is pressed. Is this normal?
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post #2 of 4 Old 11-29-2014, 02:44 PM
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Some sparks is normal with any saw however it's not normal to have a lot of sparks. I would take it back.
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post #3 of 4 Old 11-29-2014, 04:36 PM
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Thorn, if youre seeing the "little blue electricity bolts" inside the housing thats perfectly normal for any brushed motor. Its simply the brushes making contact.

If you are seeing 'sparks' that for example look like something from an arc welder in use than you have a problem.
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post #4 of 4 Old 12-01-2014, 04:26 PM
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Chamfer has it nailed.
Sometimes the brushes need to get "worn in" to the armature.
Big arcs are a no-no.
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