100HP Johnson electrical woes

[timbo2]

Hello. I recently acquired an old boat and 1967 Johnson 100HP engine. Does anyone have an electrical schematic for this beast? Someone just chopped all the connections and I don't know what goes with what. It's electric shift and electric choke. It's a mess. It seems close to starting when jumped (need new points, I think).<br /><br />Also, anything else I should know about restoring and maintaining this engine? Thanks!

 

[12Footer]

Re: 100HP Johnson electrical woes

These were fantastic engines,and you are probably correct that it's rarin to go.<br />I wouldn't rely too much on trying to get wiring diagrams here,as you will need much more info than that...For instance, recommended plugs, gaps, point gap, voltage and continuity specs. ect...<br />The shop manual is still available,and will pay for itself after your first use.<br />It takes the guess work out of the equation, saves fragile components from damage due to improper procedures and all that rot.<br />I know they aren't cheap,but it will be the best 25 dollar part you ever buy for your motor, hands-down.

 

[timbo2]

Re: 100HP Johnson electrical woes

Thanks. I will buy the manual.

 

[adrian bick]

Re: 100HP Johnson electrical woes

Change the beast to battery ignition ,with distributor and parts from the 66 model . Works like a charm and is wallet friendly there after.