1980 25 hp merc

LEE MICHNAL

Seaman Apprentice
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Feb 13, 2016
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39
Hello, help please, I have a 1980 25hp MERC, I have good spark and getting fuel, but won't fire, I can't seem to locate the neutral switch, can anyone help
Me, Dave.
 

ondarvr

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Apr 6, 2005
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You probably don't have a neutral safety switch, a neutral safety switch will prevent the plugs from firing, and you have spark.
 
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jbcurt00

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Oct 25, 2011
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I merged the 2 topics you started about this motor, but you listed it as a 1980 in 1 topic, but 1984 in the other. Which is it?

As the text was the same, I'm confident you dont have an 80 and an 84.

Here in the Mercury forum is the right place for this, not the electrical forum.

Please dont start multiple topics in multiple forums about the same subject.

Thanks

Good luck w your project and welcome to iboats
 

flyingscott

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Apr 8, 2014
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You probably don't have a neutral safety switch, a neutral safety switch will prevent the plugs from firing, and you have spark.

The neutral safety switch on that model is only for the electric starter, stops it from working with the motor in gear has nothing to do with spark. Do you have electric start and is it not working. What is your compression has the motor ever been overheated.
 
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ondarvr

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The neutral safety switch on that model is only for the electric starter, stops it from working with the motor in gear has nothing to do with spark. Do you have electric start and is it not working. What is your compression has the motor ever been overheated.

You're right, but it would need to be turning over to get spark, and he said it does, so that means it's either a manual start or the switch doesn't work.
 

flyingscott

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You're right, but it would need to be turning over to get spark, and he said it does, so that means it's either a manual start or the switch doesn't work.

Mercury 18/20/25 hp have both electric and recoil starts together not one or the other like Evinrude. That's why I don't know why he is looking for the neutral safety switch. So what is the compression and has it been overheated.
 

ondarvr

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Apr 6, 2005
Messages
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Mercury 18/20/25 hp have both electric and recoil starts together not one or the other like Evinrude. That's why I don't know why he is looking for the neutral safety switch. So what is the compression and has it been overheated.

True, kind of a non issue on the switch, he needs to look elsewhere.
 
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