How to change the wiring from 120 to 220 on dewalt table saw motor model # 388290-00

SOURCE: tile saw stopped working

check the motor might have a reset botton or check the capacitor

SOURCE: Switch diagram

as u notice the terminal on the switch has 2 connection like a switch diagram to it.it has normally open & normally close contact. the normally close contact are for red & white wire & the other
contact are for 2 black wire which is normally open contact.hope it helps.

SOURCE: dewalt 10" table saw, when ripping jambs @ back of guide?

Without knowing the full problem, (theheader is cut off) I would ask are you using the fence to help you rip? and when does the board jamb? If it jambs toward the back of the saw the guide might not be square with the blade. I would unplug it and put something that you know is square on the front edge of the blade away from the teeth and adjust the fence so that it is just snub then lock down the table and move the square to the back of saw, it should move with no resistance. If it does then the fence is out. What you would need to do if this is the case is align the fence to the blade, on the back of the saw are 2 10MM bolts that you need to loosen put your square at the front again and lock down the handle with that done move the square to the back and tap the rail on the back side to move tighter or looser and then lock down the bolts. What I do is move the fence away and then back and start all over again to make sure nothing shifted. It sounds more involved than it is. Let me know if this cures your problem

SOURCE: dewalt power saw wiring diagram for trigger switch

The Switching should go like this

(single letters denote wire color)

Y---o o---R

B---o o---B

The contacts where the black wires attach are the points on the switch that break when continuity is checked.

SOURCE: dewalt 7749 radial arm saw

According to the service manual this saw has a 120VAC single phase 2.5 Hp motor with a 5/8" x 1.5"long arbor. It has a maximum vertical cutting depth of 2 and 15/16". It has a maximum cutting depth at 45 degrees of 2.125" (2 and 1/8") without the lower guards. The maximum cutting depth at 45 degrees with the lower guards in place is 1.625" (1 and 5/8"
The service manuals (approximately 24 megabytes each) are available on line at Dewalt.com After creating an account. Then you should go here:

http://www.dewaltservicenet.com/Products/DocumentView.aspx?productid=18624&typeId=1495&documentId=574

for the manuals.