1972 Johnson 100 horse

[odins refuge]

Hey gang my name is PJ, I just bought a '72 glastron with a '72 Johnson 100 horse outboard, can anyone tell me if there are any quirky issues with this particular motor that I should be aware of?

I have heard rumors that this motor has some type of electronic shift mechanism and that it should be tested before I proceed to spend money on the motor, does anyone have any idea how to test this ?

thanks PJ

 

[racerone]

The electric shift is very good and reliable.----The issue is the electronic ignition system.----See if it runs first.- or did you hear it run before spending the coins ???

 

[odins refuge]

Thanks for the response, I bought the boat, motor and trailer for $150.00, fella had it stored in his barn for a number of years, now he's selling off everything and heading out of state, he said the motor ran when it was put away several years ago, I put a brand new deep cycle marine battery to her and the starter moaned and groaned and would barely turn the flywheel, took the starter to the shop, fella there said it looks like it has had very little use, he cleaned it up, lubed it, said @ 13 volts she works like new. Will be reinstalling the starter tomorrow and checking for spark.

Is there a best way to this? I'll pull a plug ground it and crank her over, or is there a better way?


I figured there had to be something in this deal that was worth the buck and half I spent to get here, the boats in great shape and I'm working on refurbishing the trailer now.

thanks again for helping out! I always enjoy gettin educated about my toys and how to keep en runnin!

Thanks again for your input, if all goes well I'll be on the water in a couple of weeks.

 

[boobie]

To check your spark get an open air gap spark tester at any parts house ,set it to 3/8" open air gap and check your spark. Checking your spark with a spark plug tells you nothing.

 

[F_R]

That motor has probably the most sophisticated (complicated) electrical systems of the day. We had to go to school to learn how it works and how to repair/maintain it. One mistake can cost you more than you paid for the whole rig. Are you ready for this?