J15RENM ran well last year. I fogged it put away in the well house. Pulled it out today and put in the lake 60 degree water. Fresh non ethanol premium, 50-1 XD 50. It started on 3rd pull and ran normal up to 20 mph with 14' alum. 2 miles later it died at idle no big deal, I ran the electric motor a while. Then it happened. It would not star til about the hundreth pull. I never over choke. I pumped the bulb. I put new Sierra fuel pump recently, and had shop rebuild carburetor at same time. That remedy worked some few years ago. Not used much since. I had three miles to return to dock up gentile wind, Nd I knew my four year old battery would not get me there. I pulled off the cover and looked at the motor. nuthing visually amiss. It started, I shut it down to put the cover back on. I would not start. Another hundred pulls and it started, got me to the dock. I got home put it in the barrel. Pulled the plugs, compression tested at 100 psi top, 107 psi bottom. Wipped oil off plugs, gapped to .034, Started ran I sprayed Deep Creep into carb, ran at mid range rpm till stopped smoking, more Deep Creep,... Then again it would not start. Then I broke the starter return spring. More will be revealed.