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73 18hp Evinrude 18304A: The Back-up Plan Kill Switch Question

carpking

Member
O.k. after realizing I'm going to have to remove power head to repair a carbon seal on my 25302A Evinrude of the same year, I have decided to try and get my "parts Motor" to fire. I bought an old boat as a restoration project this winter. Got the whole boat, trailer and this 18 horse for $300 with the understanding that the motor was only good for parts. Seeing as how it uses many of the same parts as my 25, I considered it a nice bonus. This 18 was originally equipped with electric and manual start. However, the electric starter has been removed. The motor is very dirty, which is a little concerning as well. The lower unit is free and has no evidence of water. Did a compression test and I have 100 psi exactly on both cylinders. There is no fire on either cylinder however. Now, the obvious issue is the "stop" switch is missing. This shorting switch is also different from the one pictured in parts diagram for this motor on this site. Only the female side remains attached. I am concerned there may be an ignition issue as there was an old condenser laying in bottom cover. First things first. Can I jump out the stop switch to make sure that's not where I'm losing my fire? Try to add pics below of switch although Ive not had much luck with pics on this site.

https://mail.google.com/mail/?ui=2&...1&disp=thd&realattid=1431159888946397184-1&zw

https://mail.google.com/mail/?ui=2&...1&disp=thd&realattid=1431160109286817792-1&zw
 
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Jump it and the ignition is killed.


O.k....the way I understand it, it shorts primary power to ground. So, if I remove the ground wire, will I be bypassing the kill switch. This is only for test purposes. I would never take a boat on the water with a bad kill switch. I am just trying to eliminate it as a reason I have no fire.
 
Here is how it works.-------------When you push the button you connect the 2 black wires.--That is what stops the motor.----------So find the connecter on one black wire and open it up.----You are now ready to test for spark !
 
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