Question about Dewalt DW744S 10" Portable Table Saw with Stand

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"DWDewalt DW712 won't always start until I rap the housing. runs slow"

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  • 206 Answers

Start with the brushes - they are either worn low or the brush tubes are causing them to stick so they don't contact the armature - this is why it starts when you 'rap' it.
Running slow can be a bad armature or field from running hot because of the bad brush connection.
1) remove the brushes
2) remove the 4 bolts holding the motor to the saw
3) pull the armature out and inspect for signs of being burnt (especially look at the copper commutators where the brushes sit)
4) inspect the field for signs of being burnt

Posted on Jun 19, 2014

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Posted on Jan 02, 2017

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Assuming the saw will start and run enough to warm up, then
adjust the Lo screw in, clockwise, until the motor starts to slow down,
turn only about 1/8 turn at a time. From the point where it starts to slow down, turn it out about 1/4 turn. This should give you a decent idle. Now pull the throttle, and see what happens.
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