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ebinmaine

How to change over 657 to later ignition switch with separate solenoid?

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On my honey's tractor is the old style ignition switch that sends All the battery current through itself.

It's a bit dark colored and I'm Not a fan of those so I'd like to replace it and change to a switch with a separate solenoid.

 

Is there a wiring schematic that shows how?

 

Thanks!

 

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I'm sure 953nut will be along, he seems to have all those diagrams. I may even have one I saved for this same purpose.

 

5911cb63b515d_Capture2_thumb_JPG_156d89be9051c1861b0b1c8220f1cc41.jpg.e701e6f70458b3fd68aaa1d95b30266a.jpg

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I'm not positive that's the right diagram, I seem to remember the one Richard sent me had a 5 pin switch.

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This is basically the same as the one @rjg854 gave you.

5b1fb7c5bae25_wiring-starter-generatorwithbatteryignition.jpg.2166985fbb3d69929bcd5fcdd451ead5.jpg

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I am pretty sure the Techy in the 657 is a Magneto system.  The above diagrams will fry the magneto. If the switch works just do a little rewiring.  Use the existing switch to control the solenoid.  Run a heavy wire from Battery + to one solenoid heavy terminal and then a heavy wire from the second solenoid heavy terminal to the starter motor.  Then a 14/16 ga wire from the Ignition switch S terminal to the small solenoid terminal.

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@rjg854 and @953 nut thank you for the responses. I should have been more clear. My apologies. @pfrederi is correct that I do have a Tecumseh in this tractor.

Thank you Paul for that. This switch does work so we'll just keep using it and wire as you stated.

 

 

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3 hours ago, ebinmaine said:

@rjg854 and @953 nut thank you for the responses. I should have been more clear. My apologies. @pfrederi is correct that I do have a Tecumseh in this tractor.

Thank you Paul for that. This switch does work so we'll just keep using it and wire as you stated.

 

 

I guess we fell into this old trap.                 :ychain:

WH_MAKES_IT_WE_AD_NEW_DESIGN__26922.1424558763.1280.1280.png?c=2

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1 minute ago, 953 nut said:

I guess we fell into this old trap.                 :ychain:

WH_MAKES_IT_WE_AD_NEW_DESIGN__26922.1424558763.1280.1280.png?c=2

 

Myself included.

 

If the techy croaks it'll get a Kohler popped in.

 

 

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I just posted all three basic wiring diagrams, The first one is your system with a solenoid. As Paul @pfrederi said , the old switch will work fine or you can go to the new 5 post if you wish.

 

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1 minute ago, 953 nut said:

I just posted all three basic wiring diagrams, The first one is your system with a solenoid. As Paul @pfrederi said , the old switch will work fine or you can go to the new 5 post if you wish.

 

Thank you sir! Very much appreciated!

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