Bypassing a switch

I have a Craftsman router and I think the variable speed switch is broken. A good way to test this is to remove the switch and connect the wires bypassing the switch. If it works, a new switch is needed. However, there are four wires: red, white, brown, and yellow. I do not
know which ones to connect to each other. Anyone know?
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go to http://www3.sears.com/ type in you number like 315.175110 and hit go then click continue and select view wiring diagram
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RayV, There aren't any wiring diagrams for this model online. Thanks for the idea anyway.
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Use the model number in the example I posted. You will get a diagram that is probably the same as yours. Or try the Ryobi website, they probably built the router you have.
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No wiring diagrams available on either site. But thanks for the advice. I did call Sears and they said that the wiring diagram is not online, so I'm out of luck. Ryobi is a good idea, so I posted my query on their forum.
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Is this a real variable speed control OR a 'click' position switch - off-high-med-low? If it is part of a speed control the the wires probably go to a speed control board. Don't attempt to connect these wires together. look for a fuse and/or burned out components on that board.
If it is a position switch then the wires will go directly to the motor. Once you find a diagram you may be able to connect wires in order to bypass the switch. Look for a plate on the motor and see if the wire color or terminals are identified. Kevin
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Kevin, It's a thumbwheel that I turn to increase or decrease speed. Are you saying that I cannot connect the wires together and need to look at the board? If so, is it time to put it in the trash? Thanks.
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