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OMC experts?
I need to install a kill switch on my 91' Johnson 40. This motor was originally a remote motor and was converted to tiller with an Evinrude tiller. In the place where the kill switch should be, they installed a pr of switches for the power tilt. They also fabricated an aluminum box below the shifter to house the key switch that also is the electric primer. I think I may have a couple options to add a kill switch. The end of the tiller has the friction tube, but is empty. It looks like it is similar to other smaller OMC tillers. Another thought was to replace the key switch with one that does 3 functions, the key, primer, and kill?

Where can I find a schematic for my motor? I have searched several sites without luck. I have also looked for a repair manual, but can not find a factory manual, just the Seloc which is rather generic!

I expect I will be doing some cleaning up of the work previous owners have done. There are several wires that end, and I would like to tuck them away, but would really like to know what they served, though everything appears to work as it should currently.

I spent Friday replacing the water pump, lower unit fluid, fuel filter, adjusting the pivot friction, and greasing all the fittings. Will grab some new plugs and fuel line next to move the tank to the bow.

If you have any suggestions, I am open!

Thanks,

Dave Diefenderfer
Manassas, VA

"Once you set out to build a boat, throw away your square. And if you work on her after she's launched, throw away your level." author unknown

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Re: OMC experts? In reply to
Dave,

I usually find most of my answers at this site. I don't see an actual schematic so this may not be of any help for you. What is the model number for your motor?

I found a stop switch assembly for a 40hp 1991,,, Part number 0584260 but that was just a random search, may not fit your motor.





Take care, Huntindave McCann Smile SHELL ROCK IA. ,,,,,, "As sailors grow older, the wiser ones move to smaller boats." Thomas Firth Jones, Multihull Voyaging
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Re: OMC experts? In reply to
Thanks Dave, I had found this too, and would need to remount the tilt switches that were fabricated in that location if I returned to stock for the stop switch.

Dave Diefenderfer
Manassas, VA

"Once you set out to build a boat, throw away your square. And if you work on her after she's launched, throw away your level." author unknown

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Re: OMC experts? In reply to
Dave Diefenderfer wrote:
Thanks Dave, I had found this too, and would need to remount the tilt switches that were fabricated in that location if I returned to stock for the stop switch.


Strange that they would not have used the stop switch as designed and put the trim switches elsewhere to begin with. None the less, what you have is what you need to deal with.

I agree that it may be less work to use a generic stop/kill switch and not disturb the previous work. Give me a day and I'll trace the wires on my motor and give you the terminal locations where the kill switch wires should be connected.

Take care, Huntindave McCann Smile SHELL ROCK IA. ,,,,,, "As sailors grow older, the wiser ones move to smaller boats." Thomas Firth Jones, Multihull Voyaging
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Re: OMC experts? In reply to
Dave,

I went out and traced the wiring on my motor. While my motor is a 1995 Johnson 25 hp. I seriously doubt the wiring is any different than how your 1991 40 hp. is wired. (in respect to the kill switch)

Here is a drawing of the wires coming from the kill switch. Plus a photo of those wires where they terminate and or connect to the rest of the wiring harness. Let me know if I can be of any more assistance.





Take care, Huntindave McCann Smile SHELL ROCK IA. ,,,,,, "As sailors grow older, the wiser ones move to smaller boats." Thomas Firth Jones, Multihull Voyaging
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Re: OMC experts? In reply to
Wow Dave, thank you!

Dave Diefenderfer
Manassas, VA

"Once you set out to build a boat, throw away your square. And if you work on her after she's launched, throw away your level." author unknown