Timing Light for Johnson 1983, 70 Horspower

[Big Bubba]

Hello to everyone,
My first question is I am wanting to do a link and sync on my 1983, 70 Horsepower Johnson outboard, model# J70ELCTE. my question is where and what kind of timing light do I need to buy and second I have the OMC service manual and want to know how difficult it is to do? I was reading that you have to line the lower first line of the throttle cam up in line with the throttle pick up roller and that is the point where the butterflies/throttle valves on the carb open up. Now for me right now my roller has about a 1/16" gap and is in between the to marks at idle/neutral position. So I am thinking that I need to turn the throttle cam that has the to lines on it in toward the white colored timing lever and then readjust my throttle carb roller to have about 1/16" gap. Does that sound right to you. Reason I ask is that is what I interpreted from the OMC service manual. Let me know your opinions. Thanks again, Bob

 

[ezeke]

Re: Timing Light for Johnson 1983, 70 Horspower

If you are going to buy one then you might as well get an inductive light with digital that can give service as a tachometer when needed.

An inductive timing light will have fingers that wrap around the spark plug wire so that you can check for spark while running the engine across it's full range.

I currently use an Actron CP7529 like the one shown here: http://www.amazon.com/Actron-CP7529-Digital-Timing-Light/dp/B000BSY9JE?tag=dogpile-20

 

[patrick4266]

Re: Timing Light for Johnson 1983, 70 Horspower

I have that same motor and I also have the manual. I am also having a hard time figuring out what it is saying about the link and sync. If you figure it out please let me know.