Johnson 1977 6hp electric wiring (TUTORIAL)

[coteno]

Just bought a 1977 6hp Johnson (pull start)
I am Trying to learn and understand the electric wiring (color code + fonction)
Can somewone take a few minutes to explain basic the wiring color code from the flyweel, to de powerpack (CDI) to the coil-spark plug and more

Normand
Thank you
Frenchman from Quebec

 

[racerone]

Does the motor not run ?-----The wiring on them is basically " plug it in and play " unless a previous owner molested it.------I would start the trouble shooting with a compression test.----Post your numbers.

 

[fdrgator]

Generic diagram, should serve the purpose

A charge coil on the stator under the flywheel sends a voltage via the brown wires to charge the capacitor in the power until when it is time to produce a spark. A sensor, also under the flywheel sends a lesser voltage via the black/white wires to the power pack to tell it that it is time to produce a spark. When the power pack gets that signal, it discharges the capacitor to the proper coil, via the orange wires (CD = Capacitor Discharge). The coil increases that discharged voltage to whatever it takes to fire the spark plug. Very simple, if you understand the basics of electricity.

 

[coteno]

Generic diagram, should serve the purpose

A charge coil on the stator under the flywheel sends a voltage via the brown wires to charge the capacitor in the power until when it is time to produce a spark. A sensor, also under the flywheel sends a lesser voltage via the black/white wires to the power pack to tell it that it is time to produce a spark. When the power pack gets that signal, it discharges the capacitor to the proper coil, via the orange wires (CD = Capacitor Discharge). The coil increases that discharged voltage to whatever it takes to fire the spark plug. Very simple, if you understand the basics of electricity.

THANK YOU exacly the basic tutorial I was looking for, I am sure it will help others.

Normand