how to crank without key

[Christina Walker]

I bought a boat with i think a 1977 johnson 85hp motor. and i didnt get a key. so Im wanting to try and straight wire it to see if it will run. it has a 6 wire switch.
I was wandering what wires to touch to crank it. I know to disconnect the kill wire and I know the hot wire. but shouldn't there be a wire to control the firing the hot wire has to touch. for future reference thanks for the help.

Switch terminals are marked as follows:

M = Raised tower like terminal = Black/Yellow wire (Kill Circuit) Do Not connect any other wires here!
M = Regular terminal = Black wire (Ground)
A = Accessory = Purple wire(s) = Anything 12 volts is to be applied to when key is ON or at START.
C = Choke = Purple/White wire
B = Battery = Usually heavier gauge RED wire (Check it) Constant 12 volt supply
S = Solenoid = White wire (To starter solenoid)​

 

[racerone]

The battery is not used to get spark !---------------Ignition comes from the flywheel when it is spinning fast enuff.

 

[poop]

It would be easier just to get a new 18.00 key switch

 

[joereeves]

Remove black/yellow wire to engage ignition.

Use small jumper from "B" terminal to "S" terminal to crank engine.

 

[run out]

call one of those mobil key guys. they make you one in a flash. did one for my boat for fifty bucks, well worth it.

 

[bobbyc]

Any "jumping" requires extra caution with gasoline fumes present!

 

[Josh Giraud]

What exactly would happen if I accidentally put 12 volts to the ground circuit? I noticed I blew a 10amp fuse by the starter motor. OOoops!!!

 

[joereeves]

What exactly would happen if I accidentally put 12 volts to the ground circuit? I noticed I blew a 10amp fuse by the starter motor. OOoops!!!

Josh..... This post is over 3 years old. Go back to the previous page to start a post of your own.