Originally Posted by Tman220
Originally Posted by Bluestream
Originally Posted by Warlord
The Rudeson 9.9/15 are some of the best outboards ever made. Excellent power to weight and reliable as a hammer.
I've owned many over the years, and also an OMC guy, but the Mercury/Mariner 9.9/15 hp 1986+ 2-strokes are so far ahead of those OMCs its incredible. Having said that, if you've picked up and old outboard, and it meet your needs, go for it.
Here's your 1974-76 low tension magento gremlins
https://aomci.org/forums/topic/low-tension-magneto-question/
I doubt the OP gives a crap about those mercury's because he already stated he acquired the 15 hp OMC. The site you linked is mostly about someone piecing together an outboard from 10 other parts engines with unknown quality and unknown mechanical ability. Hardly transferable, other than showing the possibility of having bad 45 year old original parts. In the case with my 1975 9.9 I had weak spark on one of the cylinders, it turns out one of the two external ignition coils cracked and was allowing voltage to ground directly to the head. 40 bucks later and the thing has been completely flawless.
If someone wants to restore an outboard from this era it's hard to go wrong with this particular OMC. OMC owned the market back then, made quality stuff, parts are still available and cheap in comparison to a lot of stuff from mercury back in that time frame. The site I originally linked is a no bullcrap here are the quirks, here's how you fix them, here is what works. If you haven't had a chance to check it out you should.
I've spent a lot of time on Leroys ramblings. I even sent an email to him to thank him for the effort he put in, never received a replay, so assume he's passed, or busy. Never said OP outboards was junk, just said they were ok, which they are. As far as the link I posted, that fact that guy is piecing an outboard together from parts is irrelevant to the reliability and desirability of the OMC low tension magneto. It was a poor design and only lasted a few years. I can post 50 threads to support that, and speak from experience.