1990 70hp evinrude won't shut off

boundary

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Apr 7, 2010
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last fall I was having issues trying to start the motor and found that there was no spark after pulling off the throttle bar and looking to see if everything was connected which it was put it back together and thought maybe it was the kill switch. I uncliped it and cliped it back again and the motor started. This spring I had spark issue's again but could not get it to start until I did the same thing with the kill switch. But now the motor will not turn off after it starts fine. I sent the motor to a repair place and they thought it was the power pack, replaced that and it did not solve the shut off problem so it is not the power pack that is causing the issue. I hope it is something simple that I and the mechanic are overlooking.
 

tashasdaddy

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Nov 11, 2005
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51,019
Re: 1990 70hp evinrude won't shut off

disconnected or broken black yellow wire.
 

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D

DJ

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Re: 1990 70hp evinrude won't shut off

The BIG RED PLUG, as wonderful as it is, is sometimes the culprit of these issues.

Turn the key off and wiggle the Big Red Plug.

TD is spot on, that circuit is in that plug and tends to be the one that misbehaves.
 

boundary

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Apr 7, 2010
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Re: 1990 70hp evinrude won't shut off

I will check the yellow and black wire.

when you say the big red plug do you mean the kill switch?
 

bktheking

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Jul 29, 2008
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5,057
Re: 1990 70hp evinrude won't shut off

Big red plug , connects the motor to the controls.
 
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