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I have a 1981 johnson 75hp charger. blew powerhead so i bought an evinrude powerhead that was omc identical. I have no spark. wiring issues.Thought johnson and evinrude was same wiring?

Got evinrude powerhead on boat but no spark to powerhead. everything else works( tilt/trim and access..)

Posted by jeremy lawyer on

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Bill Boyd

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Go google and type in --wiring schematics for johnson outboard motor 75 hp 1981 model --- and see if there is a pdf version for down load
repeat the search but change the name to evinrude and look for a pdf version down load
go to a dealer service center and see if you can get a schematics for each from them
while it can be expected that the wiring should be the same as each brand is made in a different factory there could be a slight difference in the wiring set up that is causing the problem

Posted on Aug 09, 2016

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