1975 Johnson 25hp electrical problems

[texasreb]

I have a 1975 Johnson 25 hp. It has both an electrical start system and a manual pull rope. The electrical wiring from the motor to the key has rotten out and I cannot replace it at this moment. I can still start the motor with the pull start but I cannot turn the motor off because the key not attached. Any ideas?

 

[Daviet]

Re: 1975 Johnson 25hp electrical problems

You can wire in a kill switch or just choke it off.

 

[texasreb]

Re: 1975 Johnson 25hp electrical problems

Thanks. I have tried to use the choke to kill the motor but all it does is run the motor at higher rpm's but it doesn't shut off. But the kill switch is a good idea.

 

[Daviet]

Re: 1975 Johnson 25hp electrical problems

You need to short the coils togeather to kill it, look below.
http://www.maxrules.com/graphics/omc/wiring/1973-76_18-25.jpg

 

[texasreb]

Re: 1975 Johnson 25hp electrical problems

how would you short them together?

 

[Daviet]

Re: 1975 Johnson 25hp electrical problems

A simple push button switch.

 

[texasreb]

Re: 1975 Johnson 25hp electrical problems

so i would run a wire from both of the positive wires on the coils together into a switch. sorry just want to make sure i do it right?

 

[Daviet]

Re: 1975 Johnson 25hp electrical problems

Look at the schematic, unhook the coil wires at the connectors and connect each one to a side of a push button switch. When you push the switch it will short the coils together and kill the engine.