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Old 05-29-2007, 08:56 PM
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JP
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Default Bypassing a Kill Switch-Johnson Outboard?

Anyone know how to by pass a kill Switch on a Johnson Oceanrunner Outboard (1995, 175hp). My engine has no spark, It cranks and cranks but no spark to fire. I tried arching a plug on the block (nothing there) and its getting gas to the plugs (which are good too). I am thinking it could be a bad kill switch so I was wondering if anyone knows how to bypass one to I could check if thats the problem. I am also open if anyone has any other ideas. Thanks guys.

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Old 05-29-2007, 09:12 PM
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Default RE: Bypassing a Kill Switch-Johnson Outboard?

On most systems when activated(switch is closed) it grounds the ignition i.e. no spark. Try and unplug one of the switch leads Which will cause a ungrounded condition, this should do what you want for testing. Do not run your boat like this though it is not safe and may result in death.
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Old 05-29-2007, 11:17 PM
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Default RE: Bypassing a Kill Switch-Johnson Outboard?

Are all 6 plugs dead? If so there should be a plug close to the power pack(you'll probably have to take the pack lose to get to it), maybe 2 of them. But the ignition kill wire is a black wire with a yellow stripe on it. There should be 2 of them going into the power pack. One of them hooks into the main harness and the other is hooked to the shift interrupt switch and then back to the harness.
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Old 05-30-2007, 08:58 AM
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Default Re: Bypassing a Kill Switch-Johnson Outboard?

Ok, I found the Black and Yellow Wire, there are actually 2 of them, each one leads to a seperate wire harness (from what I can tell), I tried disconnecting each one seperatly, didn't start, then I tried disco'ing both of them and still no starting. I hate problems like these and I am really hoping its not the power pack, I replaced that about 3 years ago and its costly; I can't image its that again.
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Old 05-30-2007, 09:44 AM
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Default Re: Bypassing a Kill Switch-Johnson Outboard?

On that model it could also be the optical eye that triggers the firing of the pack. Very common are the pack (made in mexico) and the optical eye.
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Old 05-30-2007, 11:29 AM
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Default Re: Bypassing a Kill Switch-Johnson Outboard?

If disconnecting the black and yellow wires didn't give you spark. Then according to my book the next test is the optical test, but you need a special anylizer to check it. I personally would check the stator next for output as this can be done with a peak reading volt meter.
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Old 08-30-2013, 08:12 AM
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'97 150HP Ocean Runner with optical ign here.

I only see one black/yellow and it goes to the neutral selector switch. Is this the correct wire?

Another Q, if I replace the ignition switch with a switch that does not have a kill switch would this effectively bypass the motor kill circuitry?
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Old 08-30-2013, 08:55 AM
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This is a six year old thread,you might want to start a new one.
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Old 08-30-2013, 09:51 AM
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The yellow with red stripe wire in the harness goes from the start terminal through the neutral safety switch to the engine. If you do not have any cranking, check that switch. If it cranks but doesn't start, check to see if the the yellow / black wire is the same point electrically as ground. If so, then the lanyard switch is a likely culprit. Disconnecting the yellow / black wire at the lanyard switch and see if that helps.

If not, then you need to start at the basics - compression, fuel, spark.
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